CN114959418B - 一种船用抗海水腐蚀疲劳高强钢及制造方法 - Google Patents
一种船用抗海水腐蚀疲劳高强钢及制造方法 Download PDFInfo
- Publication number
- CN114959418B CN114959418B CN202210584651.4A CN202210584651A CN114959418B CN 114959418 B CN114959418 B CN 114959418B CN 202210584651 A CN202210584651 A CN 202210584651A CN 114959418 B CN114959418 B CN 114959418B
- Authority
- CN
- China
- Prior art keywords
- percent
- steel
- equal
- corrosion fatigue
- strength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 139
- 239000010959 steel Substances 0.000 title claims abstract description 139
- 238000005260 corrosion Methods 0.000 title claims abstract description 62
- 230000007797 corrosion Effects 0.000 title claims abstract description 59
- 239000013535 sea water Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000000126 substance Substances 0.000 claims abstract description 11
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims description 29
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 238000005266 casting Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims description 6
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 229910052787 antimony Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000009661 fatigue test Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- 238000011056 performance test Methods 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims 3
- 230000001681 protective effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000003723 Smelting Methods 0.000 description 8
- 229910001566 austenite Inorganic materials 0.000 description 7
- 229910000859 α-Fe Inorganic materials 0.000 description 7
- 238000009749 continuous casting Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000007670 refining Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000005204 segregation Methods 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 231100000989 no adverse effect Toxicity 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- -1 compound salts Chemical class 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- RMLPZKRPSQVRAB-UHFFFAOYSA-N tris(3-methylphenyl) phosphate Chemical group CC1=CC=CC(OP(=O)(OC=2C=C(C)C=CC=2)OC=2C=C(C)C=CC=2)=C1 RMLPZKRPSQVRAB-UHFFFAOYSA-N 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/56—Elongation control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/009—Pearlite
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
一种船用抗海水腐蚀疲劳高强钢及制造方法,钢中化学成分C0.030%~0.080%、Si0.25%~0.55%、Mn0.95%~1.50%、Nb0.010%~0.040%、V0.025%~0.060%、Cu0.10%~0.40%、N0.0100%~0.0150%、Ni0.20%~0.50%、P0.010%~0.030%、S≤0.005%、Sb0.10%~0.50%、Sn0.30%~0.45%、Cr0.10%~0.40%、La 0.0020%~0.0050%、Als0.015%~0.035%,余量为Fe及杂质。本发明生产出成分设计合理、强度高、低温韧性好、腐蚀疲劳性能优异的船用高强钢板。
Description
技术领域
本发明涉及金属材料制备领域,尤其涉及一种船用抗海水腐蚀疲劳高强钢及制造方法。
背景技术
腐蚀疲劳是引起工程结构失效的关键性因素之一,其中最大加载应力幅值往往小于材料屈服极限,并且破坏前无任何征兆。在腐蚀疲劳过程中,存在两种基本的疲劳损伤模式,一是由交变载荷引起的疲劳损伤;二是由腐蚀介质引起的腐蚀损伤,这两种损伤往往不是简单的叠加,而是两者之间存在明显的耦合效应,即相互促进相互竞争。船舶在海洋环境中尤其是在冰区环境服役时,长期遭受海洋地域低温、氯离子、干湿循环、风浪与海冰载荷等的交替影响,上述损伤失效更为显著。从而对船舶建造材料提出了更高的要求,而高强钢板作为船舶建造的主要材料,首先要具有高强度和低温高韧性,其次要具有良好的抗海水腐蚀疲劳性能。
长期以来,在工程用钢的设计、制造等方面关注更多的是高强度和高韧性,对腐蚀、疲劳和腐蚀疲劳关注较少。但是随着钢铁材料研究的发展其腐蚀、疲劳等性能受到越来越多的关注。名为“一种屈服345MPa级高疲劳结构钢及其制造方法”,申请号:201910712227.1的专利文件,公开了一种屈服强度345MPa级高疲劳结构钢,其化学成分为:C 0.13%~0.16%,Mn 1.30%~1.60%,Nb 0.020%~0.050%,Alt 0.020%~0.030%,Ti≤0.010%,Si≤0.12%,P≤0.010%,S≤0.005%,余量为铁和不可避免杂质,通过采用大压下+控冷工艺,得到的钢板具有良好的综合力学性能和较好的表面质量。但是钢板没有评价其腐蚀疲劳性能,且钢板仅评价了-20℃的冲击韧性,远不能满足使用要求。名为“耐疲劳特性优良的高强度热轧钢板及其制造方法”,申请号:201180044623.3的专利文件,公开了一种耐疲劳特性优良的高强度热轧钢板,其化学成分为:C 0.05~0.15%,Si 0.2~1.2%,Mn 1.0~2.0%,P 0.03%以下,S 0.0030以下,Al 0.005~0.10%,N 0.006%以下,其余元素还含有Ti 0.03~0.13%,Nb 0.02~0.10%,V 0.02~0.15中的一种或两种以上,通过采用控轧控冷工艺,得到的钢板其强度在780MPa以上,200万次循环下的疲劳强度在580MPa以上,钢板同样没有评价其腐蚀疲劳性能,且没有评价钢板的低温韧性。名为“一种高止裂和疲劳强度厚钢板及其制备方法”,申请号:201810007814.6的专利文件,公开了一种高止裂和疲劳强度厚钢板,其化学成分为:C 0.05~0.07%,Si 0.10~0.20%,Mn 1.40~1.60%,Nb 0.04~0.06%,Ti 0.01~0.02%,Cu 0.30~0.35%,Cr 0.27~0.31%,Ni0.4~0.5%,Al 0.01~0.04%,Mo 0.06~0.11%,P≤0.020%,S≤0.010%,余量为铁和杂质,该发明钢的屈服强度不低于500MPa,-60℃冲击吸收能量大于250J,200万次疲劳强度大于160J,其疲劳强度偏低,影响钢板的服役性能,且没有评价腐蚀疲劳性能。名为“TMCP型高强韧高疲劳性能耐候桥梁钢板及制备方法”,申请号:201810783890.6的专利文件,公开了一种高疲劳性的桥梁钢板,其化学成分为:C 0.05~0.08%,Si 0.12~0.18%,Mn 1.4~1.6%、Nb 0.045~0.058%、Ti 0.01~0.02%、Cu 0.30~0.35%、Cr 0.22~0.30%、Ni0.45~0.55%、Al 0.02~0.04%、Mo 0.05~0.12%、P≤0.009%、S≤0.005%,其余为Fe和其他不可避免的杂质;该钢的1000万次下疲劳强度不低于170MPa,其疲劳强度偏低,不利于钢板的服役性能。名为“一种工程用抗腐蚀疲劳钢及其制备方法”,申请号:202110068169.0的专利文件,公开了一种工程用抗腐蚀疲劳钢,该钢在E690钢主元素(C 0.04~0.07%,Si0.20~0.26%,Mn 1.45~1.60%,P≤0.01%,S≤0.015%,Cr 0.44~0.50%)的基础上,进行元素调控及特征元素添加,Cu 0.28~0.66%,Ni 0.76~1.55%,Sb 0.03~0.12%,其余为Fe和不可避免的杂质,其腐蚀疲劳强度提高可达52%,但是没有评价钢的低温韧性。
综上所述,目前船用高强钢板的生产主要存在以下问题。
1)钢板的低温韧性不足,不能满足使用要求。
2)钢板的疲劳性能偏低,影响钢板的服役性能。
3)钢板抗海水腐蚀疲劳性能不足,不能满足船舶的长期服役要求。
发明内容
本发明提供了一种船用抗海水腐蚀疲劳高强钢及制造方法,其目的在于生产出成分设计合理、强度高、低温韧性好、腐蚀疲劳性能优异的船用高强钢板。
为了达到上述目的,本发明采用以下技术方案实现:
一种船用抗海水腐蚀疲劳高强钢,钢中化学成分按照重量百分比计为:C 0.030%~0.080%、Si 0.25%~0.55%、Mn 0.95%~1.50%、Nb 0.010%~0.040%、V 0.025%~0.060%、Cu 0.10%~0.40%、N 0.0100%~0.0150%、Ni 0.20%~0.50%、P 0.010%~0.030%、S≤0.005%、Sb 0.10%~0.50%、Sn 0.30%~0.45%、Cr 0.10%~0.40%、La0.0020%~0.0050%、Als 0.015%~0.035%,余量为Fe及不可避免杂质。
下面对本发明中各化学成分的作用做详细介绍。
C:钢中基本的强化元素,在本发明技术方案中是保证强度、硬度的主要元素;其含量偏低时会使碳化物等的生成量降低,影响轧制时细化晶粒的效果。当含量偏高时,钢中渗碳体含量增加,对钢板的低温韧性、焊接性能和腐蚀性能不利。因此综合考虑成本、性能等因素,本发明控制C的范围为0.030%-0.080%。
Si:炼钢脱氧的必要元素,在钢中固溶能力较强,能提高钢的弹性极限、屈服强度以及疲劳强度,但是含量过高时,对钢的低温韧性和表面质量有不利的影响。本发明控制Si的范围为0.25%-0.55%。
Mn:在钢中形成置换固溶体,可大量固溶于Fe基体中。能够延缓钢中铁素体和珠光体转变,大幅增加钢的淬透性,降低钢的脆性转变温度,改善冲击韧性,但是Mn含量过高,容易在钢中形成偏析,对钢的塑性、韧性、疲劳和腐蚀性能均有不利影响。综合考虑,本发明控制Mn的范围为0.95%-1.50%。
Nb:晶粒细化元素,加热时未溶解的Nb的碳、氮化物颗粒分布在奥氏体晶界上,可阻碍钢在加热时奥氏体晶粒长大;能够有效延迟变形奥氏体的再结晶,阻止奥氏体晶粒长大,细化铁素体晶粒,能提高钢的冲击韧性并降低其脆性转变温度。本发明控制Nb的范围为0.010%-0.040%。
V:强碳化物形成元素,对奥氏体再结晶影响较小,低温时V的碳、氮化物大量析出,析出物与铁素体间具有特定的位向关系,具有明显的析出强化和细化组织作用,从而提高钢的疲劳裂纹萌生和扩展的抗力。本发明控制V的范围为0.025%-0.060%。
Cu:适量添加时提高钢的强度、低温韧性及耐腐蚀性能,同时对焊接热影响区硬化性和韧性没有不利的影响,但含量过高时,钢的热脆性恶化,易产生热裂纹。本发明控制Cu的范围为0.10%-0.40%。
N:本发明的重要强韧化元素,在钢中N主要以游离态和化合物两种状态存在,前者的存在对钢板的韧性不利,后者的存在则对钢板的综合性能有积极的作用。对于含V的钢中,钢中缺氮的情况下,大部分的V没有充分发挥其析出强化作用。含氮钢不仅消除了炼钢过程中因脱气和精炼去氮引起的成本增加,而且钢中增氮更能充分发挥微合金元素的作用,节约合金化元素的用量,从而大大降低生产成本。同时V(C,N)析出在钢中与铁素体间有特定的位向关系,对提高本发明钢的疲劳性能具有有益的作用,另外,N的加入能够固定位错,抑制位错移动形成胞状结构,延迟疲劳裂纹的产生。本发明控制N的范围为0.0100%-0.0150%。
Ni:对钢的焊接热影响区硬化性和韧性没有不良影响,并且能提高钢的韧性,对提高钢的疲劳强度及耐腐蚀性能也有有益的影响,另外,Ni的加入还可以降低Cu含量高时的热裂纹倾向,综合考虑成本、性能等因素,本发明控制Ni的范围为0.20%-0.50%。
P:与Cu元素共同存在可形成各种复合盐,使内锈层的晶粒细小、致密,能抵抗Cl-的破坏,降低钢的腐蚀速率,但是含量过高时容易形成严重的偏析,对钢的低温韧性和焊接性能不利。本发明控制P的范围为0.010%-0.030%。
Sb:一般情况下对钢的力学性能有不利影响,使钢的强度降低,脆性增加,但如在钢中加入一定量的锑,会不同程度的提高钢的抗腐蚀能力及耐磨性,与Sn复合添加时,在钢的锈层中出现Sn的富集和Sb的均匀分布,钢的表面形成SnO2-Sb2O5耐蚀性氧化膜,可以提高阻挡Cl-渗透的能力,从而进一步提高钢的耐蚀性。本发明控制Sb的范围为0.10%-0.50%。
Sn:与Sb的作用类似,适量加入会提高钢的抗腐蚀能力,与Sb复合添加时,可以进一步提高钢的耐蚀性。本发明控制Sn的范围为0.30%-0.45%。
Cr:增加钢的淬透性,提升钢的强韧性能。少量Cr的添加,能有效延缓钢板的初期腐蚀,但Cr含量过高时,随酸性环境腐蚀时间的延长会降低钢的耐腐蚀性能。本发明控制Cr的范围为0.10%~0.40%。
La:稀土元素,少量加入能改善钢的流动性,有良好的的脱硫作用,减少钢中非金属夹杂,使钢组织致密、纯净,对提高钢的疲劳强度及低温韧性均有积极作用。同时能够提高钢在海水中的腐蚀电位,从而提高钢的耐腐蚀性能。本发明控制La的范围为0.0020%~0.0050%。
Al:强脱氧剂,在钢中生产高度细碎的、超显微的氧化物,起到细化晶粒的作用,能够提高钢的强度及疲劳强度。本发明控制Als的范围为0.015%-0.035%。
钢板屈服强度400~500MPa,抗拉强度>580MPa,断后延伸率>26.0%,-60℃低温冲击吸收能量>200J。
参照ISO 11782-Ⅰ-2017《金属与合金的腐蚀-腐蚀疲劳试验第1部分循环失效试验》进行钢板腐蚀疲劳性能检验,在应力比为-1,加载频率1HZ的试验条件下,模拟海水环境中腐蚀疲劳强度≥268MPa。
一种船用抗海水腐蚀疲劳高强钢的制造方法,工艺步骤包括冶炼、连铸、加热炉加热和轧制,具体包括如下步骤:
1)按照上述成分对钢进行冶炼:
a)在转炉冶炼时调整C、Si、Mn、P、S等元素的含量,使其含量至本发明范围内,并根据要求添加其它合金成分进行熔炼。
b)将钢水进行精炼,调整其它合金元素含量至本发明范围内。
c)将精炼后的钢水进行RH处理,RH处理时间≥30min,RH处理时全程吹氮,保证钢的最终N含量为0.0100%~0.0150%,控制钢中[H]≤2.0ppm,[O]≤18ppm。
2)将步骤1)所得钢水经连铸制得所需铸坯,控制中间包过热度≤30℃,全程保护浇注,为了改善铸坯的心部偏析,投入电磁搅拌和轻压下,电磁搅拌:I≥400A。
3)为了调控连铸坯内应力,促进C/N化物的析出,防止连铸坯晶粒异常长大,将步骤2)所得铸坯堆垛缓冷,堆垛时间≥36h。
4)铸坯加热至1150℃~1250℃,为了控制连铸坯加热质量,加热采用分段加热工艺,600℃以下,采用快速加热工艺,提高加热效率,升温速度15~20℃/min,大于600℃,采用慢速加热+短时保温的工艺,使铸坯中的析出相充分回溶,并防止奥氏体晶粒的长大,升温速度8~15℃/min,保温时间0.5~3.5h。
5)将铸坯经两阶段轧制成热轧钢板,第一阶段为了充分破碎奥氏体晶粒,采用低速大压下的轧制工艺,开轧温度1050~1150℃,辊速控制在10.0-15.0r/min,前两道次平均压下量≥45mm,其余道次压下率20%~40%,中间坯厚度为2.0~2.5倍成品厚度,为了进一步细化晶粒,第二阶段采用高速大压下工艺,开轧温度880~920℃,辊速控制在20.0-25.0r/min,道次压下率15%~35%,终轧温度840~880℃。
6)为了保持轧后钢板细小的晶粒,防止晶粒长大,轧后钢板进行加速冷却,开冷温度800~850℃,冷却速度5~20℃/s,返红温度630~680℃。
7)将钢板进行堆垛缓冷,以释放轧制、冷却过程中形成的内应力,并进一步形成细小的析出相,堆垛温度450~520℃,堆垛时间≥20h。
与现有技术相比,本发明的有益效果是:
1)本发明采用低碳及添加Cu、Ni、Cr、Sb、Sn等合金元素提高钢的耐腐蚀性能,通过添加Si、Nb、V-N等元素提高钢的疲劳性能,取消Ti元素等易于形成多面体型析出相的加入,添加稀土元素提高钢的纯净度,通过各元素之间的相互作用,抑制钢腐蚀疲劳裂纹的萌生及扩展。轧制采用首阶段低速大压下+二阶段高速大压下的两阶段轧制工艺,配合后续高返红的快速冷却工艺+堆垛缓冷,最终得到的钢板组织为细化的等轴铁素体+粒状贝氏体+少量珠光体组织,铁素体含量≥85.0%,其晶粒尺寸10-20μm,在铁素体基体上弥散分布球形的Nb、V析出相,其尺寸为20-30nm,钢板具有良好的抗海水腐蚀疲劳性能,其腐蚀疲劳强度达268MPa以上,是常规钢板的1.5倍,腐蚀疲劳比>0.45。
2)钢板具有优良的综合力学性能,屈服强度400-500MPa,抗拉强度>580MPa,断后延伸率>26.0%,-60℃低温冲击吸收能量>200J。
附图说明
图1是实施例9典型金相组织照片。
具体实施方式
下面通过实施例对本发明进行更详细的描述,这些实施例仅仅是对本发明最佳实施方式的描述,并不对本发明的范围有任何的限制。
根据本发明所设计的化学成分范围进行冶炼,化学成分如表1所示,将所得钢水经连铸-加热-轧制-冷却得到本发明的钢板,冶炼工艺及加热工艺如表2所示,轧制工艺如表3所示,冷却工艺如表4所示。
表1本发明实施例钢的冶炼工艺及化学成分(wt%)
编号 | C | Si | Mn | Nb | V | Cu | N | Ni | P | S | Sb | Sn | Cr | La | Als |
1 | 0.032 | 0.49 | 1.49 | 0.037 | 0.053 | 0.33 | 0.0144 | 0.31 | 0.023 | 0.003 | 0.12 | 0.31 | 0.33 | 0.0028 | 0.019 |
2 | 0.038 | 0.53 | 1.32 | 0.039 | 0.058 | 0.39 | 0.0146 | 0.36 | 0.029 | 0.002 | 0.16 | 0.34 | 0.39 | 0.0041 | 0.032 |
3 | 0.059 | 0.32 | 1.06 | 0.022 | 0.047 | 0.24 | 0.0106 | 0.23 | 0.012 | 0.004 | 0.28 | 0.38 | 0.14 | 0.0036 | 0.027 |
4 | 0.049 | 0.37 | 1.43 | 0.019 | 0.044 | 0.28 | 0.0113 | 0.29 | 0.018 | 0.001 | 0.32 | 0.39 | 0.17 | 0.0032 | 0.023 |
5 | 0.067 | 0.28 | 1.18 | 0.021 | 0.032 | 0.37 | 0.0128 | 0.42 | 0.027 | 0.002 | 0.47 | 0.32 | 0.26 | 0.0046 | 0.024 |
6 | 0.061 | 0.35 | 1.13 | 0.034 | 0.039 | 0.36 | 0.0122 | 0.48 | 0.026 | 0.003 | 0.39 | 0.37 | 0.22 | 0.0024 | 0.028 |
7 | 0.043 | 0.44 | 1.35 | 0.032 | 0.046 | 0.32 | 0.0139 | 0.34 | 0.016 | 0.002 | 0.42 | 0.33 | 0.37 | 0.0044 | 0.018 |
8 | 0.054 | 0.29 | 1.22 | 0.026 | 0.038 | 0.22 | 0.0132 | 0.23 | 0.014 | 0.001 | 0.48 | 0.36 | 0.28 | 0.0027 | 0.017 |
9 | 0.073 | 0.42 | 0.98 | 0.016 | 0.034 | 0.19 | 0.0138 | 0.22 | 0.028 | 0.004 | 0.19 | 0.43 | 0.19 | 0.0035 | 0.033 |
10 | 0.078 | 0.31 | 1.03 | 0.014 | 0.028 | 0.13 | 0.0102 | 0.26 | 0.013 | 0.003 | 0.24 | 0.42 | 0.12 | 0.0039 | 0.029 |
表2本发明实施例钢冶炼及加热工艺
表3本发明实施例钢的轧制工艺
表4本发明实施例钢的冷却工艺
编号 | 开冷温度/℃ | 冷却速度/℃/s | 返红温度/℃ | 堆垛温度/℃ | 堆垛时间/h |
1 | 816 | 12 | 636 | 466 | 29 |
2 | 824 | 13 | 646 | 482 | 35 |
3 | 841 | 14 | 631 | 476 | 26 |
4 | 834 | 8 | 676 | 503 | 38 |
5 | 846 | 15 | 664 | 517 | 27 |
6 | 821 | 11 | 652 | 512 | 36 |
7 | 806 | 17 | 659 | 471 | 23 |
8 | 811 | 10 | 642 | 509 | 25 |
9 | 834 | 16 | 674 | 498 | 30 |
10 | 842 | 9 | 676 | 492 | 34 |
对本发明实施例钢进行常规力学性能检验,结果如表5所示。
表5本发明实施例钢的力学性能
对本发明实施例钢和对比例钢进行腐蚀疲劳性能检验,参照ISO 11782-Ⅰ-2017《金属与合金的腐蚀-腐蚀疲劳试验第1部分循环失效试验》,采用轴向应力控制方法进行腐蚀疲劳性能测定,应力比-1,加载频率1HZ。腐蚀疲劳的腐蚀溶液按照ASTM D1141-98标准配置模拟海水,PH值采用稀NaOH溶液进行调节至8.2。检验结果如表6所示。
表6本发明实施例钢的腐蚀疲劳性能
Claims (5)
1.一种船用抗海水腐蚀疲劳高强钢,其特征在于,钢中化学成分按照重量百分比计为:C 0.030%~0.080%、Si 0.25%~0.55%、Mn 0.95%~1.50%、Nb 0.010%~0.040%、V0.025%~0.060%、Cu 0.10%~0.40%、N 0.0100%~0.0150%、Ni 0.20%~0.50%、P0.010%~0.030%、S≤0.005%、Sb 0.10%~0.50%、Sn 0.30%~0.45%、Cr 0.10%~0.40%、La 0.0020%~0.0050%、Als 0.015%~0.035%,余量为Fe及不可避免杂质;
船用抗海水腐蚀疲劳高强钢的制造方法,包括如下步骤:
1)将精炼后的钢水进行RH处理,RH处理时间≥30min,RH处理时全程吹氮,保证钢的最终N含量为0.0100%~0.0150%,控制钢中[H]≤2.0ppm,[O]≤18ppm;
2)将步骤1)所得钢水经连铸制得所需铸坯,控制中间包过热度≤30℃;
3)铸坯加热至1150℃~1250℃,加热采用分段加热工艺,600℃以下,升温速度15~20℃/min,大于600℃,升温速度8~15℃/min,保温时间0.5~3.5h;
4)将铸坯经两阶段轧制成热轧钢板,开轧温度1050~1150℃,辊速控制在10.0-15.0r/min,前两道次平均压下量≥45mm,其余道次压下率20%~40%,中间坯厚度为2.0~2.5倍成品厚度,开轧温度880~920℃,辊速控制在20.0-25.0r/min,道次压下率15%~35%,终轧温度840~880℃;
5)轧后钢板进行加速冷却,开冷温度800~850℃,冷却速度5~20℃/s,返红温度630~680℃;
6)将钢板进行堆垛缓冷,堆垛温度450~520℃,堆垛时间≥20h。
2.根据权利要求1所述的一种船用抗海水腐蚀疲劳高强钢,其特征在于,钢板屈服强度400~500MPa,抗拉强度>580MPa,断后延伸率>26.0%,-60℃低温冲击吸收能量>200J。
3.根据权利要求1所述的一种船用抗海水腐蚀疲劳高强钢,其特征在于,参照ISO11782-Ⅰ-2017《金属与合金的腐蚀-腐蚀疲劳试验第1部分循环失效试验》进行钢板腐蚀疲劳性能检验,在应力比为-1,加载频率1HZ的试验条件下,模拟海水环境中腐蚀疲劳强度≥268MPa。
4.根据权利要求1所述的一种船用抗海水腐蚀疲劳高强钢,其特征在于,上述步骤2)全程保护浇注,并投入电磁搅拌和轻压下,电磁搅拌:I≥400A。
5.根据权利要求1所述的一种船用抗海水腐蚀疲劳高强钢,其特征在于,将步骤2)所得铸坯堆垛缓冷,堆垛时间≥36h。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210584651.4A CN114959418B (zh) | 2022-05-27 | 2022-05-27 | 一种船用抗海水腐蚀疲劳高强钢及制造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210584651.4A CN114959418B (zh) | 2022-05-27 | 2022-05-27 | 一种船用抗海水腐蚀疲劳高强钢及制造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN114959418A CN114959418A (zh) | 2022-08-30 |
CN114959418B true CN114959418B (zh) | 2023-06-20 |
Family
ID=82956686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202210584651.4A Active CN114959418B (zh) | 2022-05-27 | 2022-05-27 | 一种船用抗海水腐蚀疲劳高强钢及制造方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN114959418B (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116043105B (zh) * | 2022-11-07 | 2024-04-12 | 内蒙古工业大学 | 一种耐腐蚀性超高强度海洋平台用钢及其制备方法 |
CN116875902A (zh) * | 2023-07-24 | 2023-10-13 | 鞍钢股份有限公司 | 一种船舶用耐磨蚀钢板及制造方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4267367B2 (ja) * | 2002-06-19 | 2009-05-27 | 新日本製鐵株式会社 | 原油油槽用鋼およびその製造方法、原油油槽およびその防食方法 |
JP3854574B2 (ja) * | 2002-12-13 | 2006-12-06 | 新日本製鐵株式会社 | 耐疲労き裂伝播特性に優れた原油油槽用鋼 |
CN102732799B (zh) * | 2012-07-09 | 2014-04-09 | 武汉钢铁(集团)公司 | 一种耐酸腐蚀的船体内底板用钢及其生产方法 |
CN109112419B (zh) * | 2017-06-26 | 2020-02-18 | 鞍钢股份有限公司 | 海洋工程用调质eh550特厚钢板及其制造方法 |
CN113597473B (zh) * | 2019-04-11 | 2022-11-01 | 日本制铁株式会社 | 钢板及其制造方法 |
-
2022
- 2022-05-27 CN CN202210584651.4A patent/CN114959418B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN114959418A (zh) | 2022-08-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109082591B (zh) | 125ksi抗硫化氢应力腐蚀高强油套管用钢及其制备工艺 | |
JP6198937B2 (ja) | 超高度の靭性および優れた溶接性を伴うht550鋼板ならびにその製造方法 | |
CN114959460B (zh) | 一种低屈强比易焊接耐候桥梁钢及其制造方法 | |
CN112877601B (zh) | 一种优良低温韧性的低屈强比海工钢板及其制造方法 | |
CN114959418B (zh) | 一种船用抗海水腐蚀疲劳高强钢及制造方法 | |
CN113549828B (zh) | 一种低屈强比超高强海工钢及其制造方法 | |
CN109161790A (zh) | 一种酸性条件下使用的高级别高韧性管件钢板及其制造方法 | |
CN114836694B (zh) | 一种船用抗海水腐蚀疲劳超高强钢及制造方法 | |
WO2020062564A1 (zh) | 一种超高钢q960e厚板及制造方法 | |
CN112251672B (zh) | 焊接性能优良的低屈强比eh690钢板及其制造方法 | |
CN112143959B (zh) | 低屈强比、高韧性及优良焊接性钢板及其制造方法 | |
CN114657472B (zh) | 一种疲劳性能优异的船用超高强低温钢及制造方法 | |
CN114574665B (zh) | 一种疲劳性能优异的船用高强韧性低温钢及制造方法 | |
CN113862558A (zh) | 一种屈服强度700MPa级低成本高韧性高强调质钢及其制造方法 | |
CN114107812B (zh) | 一种高断裂韧性420MPa级海工平台用热处理态钢板及制备方法 | |
CN114959509B (zh) | 690MPa级高韧性钢板及其生产方法 | |
CN107974621B (zh) | 一种经济型直缝埋弧焊管用x80管线钢板及生产方法 | |
CN112251670A (zh) | 一种延伸性能良好的690MPa级钢板及其制造方法 | |
CN115558863B (zh) | 一种屈服强度≥750MPa的低屈强比海工钢及其生产工艺 | |
CN113737088A (zh) | 低屈强比、高韧性及高焊接性800MPa级钢板及其制造方法 | |
CN112593155B (zh) | 一种高强度建筑结构用抗震耐火耐候钢板及制备方法 | |
CN115572905A (zh) | 一种690MPa级耐回火低温调质钢及其制造方法 | |
CN114480949B (zh) | 一种690MPa级低屈强比耐候焊接结构钢、钢板及其制造方法 | |
CN116875900B (zh) | 船用抗海水腐蚀疲劳性能优异的800MPa级钢板及其制造方法 | |
CN115786806B (zh) | 一种具有良好低温韧性的高强度低碳当量特厚钢板及其制造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |