CN110699611B - High-strength anti-pitting alloy powder - Google Patents
High-strength anti-pitting alloy powder Download PDFInfo
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- CN110699611B CN110699611B CN201911145836.XA CN201911145836A CN110699611B CN 110699611 B CN110699611 B CN 110699611B CN 201911145836 A CN201911145836 A CN 201911145836A CN 110699611 B CN110699611 B CN 110699611B
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- alloy powder
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- 239000000843 powder Substances 0.000 title claims abstract description 30
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 21
- 239000000956 alloy Substances 0.000 title claims abstract description 21
- 229910052796 boron Inorganic materials 0.000 claims abstract description 18
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 18
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 18
- 229910052802 copper Inorganic materials 0.000 claims abstract description 17
- 229910052790 beryllium Inorganic materials 0.000 claims abstract description 16
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 12
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 12
- 238000005260 corrosion Methods 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000004372 laser cladding Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 3
- 238000005253 cladding Methods 0.000 abstract description 2
- 239000011651 chromium Substances 0.000 description 8
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005137 deposition process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- 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
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- B22F1/0003—
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/48—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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
Abstract
The invention provides high-strength anti-pitting alloy powder which comprises the following components in percentage by weight: c: 0.1-0.2%, Cr: 15.5-19.5%, Ni: 2-13.5%, Mo: 1.5-3%, Nb: 0.8-1.5%, B: 0.6-1.1%, Be: 0.5-2.0%, Cu: 0.5 to 3.0 percent; the balance being Fe. The high-strength anti-pitting alloy powder disclosed by the invention has the following advantages: (1) the powder has good fluidity, and the powder can be uniformly and smoothly fed into a molten pool in the cladding process; (2) the powder has good crack resistance, and the problem that a welding layer is easy to crack because the heat energy is concentrated and cooled quickly in the laser cladding process is solved; (3) low cost and good wear resistance and cavitation resistance.
Description
Technical Field
The invention belongs to the technical field of metal alloy powder, and particularly relates to high-strength anti-pitting alloy powder.
Background
Mechanical mechanisms such as hydraulic pillars and the like usually use low-carbon steel materials, have limited service life due to the problems of low hardness, easy abrasion, non-corrosion resistance and the like, and are repaired by adopting a laser cladding process to overcome the problems, so that the repair efficiency is high, the labor hour and the cost are low, and the mechanical mechanisms are often used for surface coating modification. The coating produced in the way is high in strength because of metallurgical bonding, but the deposition process generally adopts metal powder as a raw material.
Disclosure of Invention
In view of the above, the present invention is directed to a high-strength anti-pitting alloy powder to meet the requirements of laser deposition process.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the high-strength anti-pitting alloy powder comprises the following components in percentage by weight: c: 0.1-0.2%, Cr: 15.5-19.5%, Ni: 2-13.5%, Mo: 1.5-3%, Nb: 0.8-1.5%, B: 0.6-1.1%, Be: 0.5-2.0%, Cu: 0.5 to 3.0 percent; the balance being Fe.
Further, the high-strength anti-pitting alloy powder comprises the following components in percentage by weight: c: 0.1%, Cr: 17.89%, Ni: 13.1%, Mo: 1.5%, Nb: 0.8%, B: 0.7%, Be: 0.5%, Cu: percent; the balance being Fe.
Further, the high-strength anti-pitting alloy powder comprises the following components in percentage by weight: c: 0.13%, Cr: 17.5%, Ni: 8.5%, Mo: 2.1%, Nb: 1%, B: 0.8%, Be: 1.0%, Cu: 1.5 percent; the balance being Fe.
Further, the high-strength anti-pitting alloy powder comprises the following components in percentage by weight: c: 0.12%, Cr: 16%, Ni: 3.75%, Mo: 2.3%, Nb: 1.25%, B: 1.05%, Be: 1.2%, Cu: 1.0 percent; the balance being Fe.
Further, the high-strength anti-pitting alloy powder comprises the following components in percentage by weight: c: 0.12%, Cr: 16%, Ni: 2.5%, Mo: 3%, Nb: 1.5%, B: 1.1%, Be: 1.2%, Cu: 1.5 percent; the balance being Fe.
Compared with the prior art, the high-strength anti-pitting alloy powder has the following advantages:
(1) the powder has good fluidity, and the powder can be uniformly and smoothly fed into a molten pool in the cladding process;
(2) the powder has good crack resistance, and the problem that a welding layer is easy to crack because the heat energy is concentrated and cooled quickly in the laser cladding process is solved;
(3) low cost and good wear resistance and cavitation resistance.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meanings as commonly understood by one of ordinary skill in the art to which the present invention belongs. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
The present invention will be described in detail with reference to examples.
The composition of the components of examples 1-4 and control 1-2 is shown in Table 1.
TABLE 1 compositional makeup of examples 1-4 and control groups 1-2
Alloy powders prepared according to the composition of the components of examples 1-4 and controls 1, 2 were tested, the items and data of which are shown in Table 2.
TABLE 2 items and data tested
From the data of tables 1 and 2, the following conclusions can be drawn:
the high-strength anti-pitting alloy powder takes chromium as a main body, and elements such as Be, Cu, Ni, Mo, B, Nb and the like are added to improve the overall performance of the alloy powder, compared with the embodiment 1, the comparison group 1 has Mo, B and Nb ranges smaller than those of the Mo, B and Nb, meanwhile, the comparison group does not contain Be and Cu, the metal tensile strength in the embodiment 1 is higher than that of the comparison group, the solid solution strengthening effect of Be and Cu is extremely high, and Cu has anti-corrosion capability;
in comparison with example 4, in comparative group 2, Mo, B and Nb are all larger than the range of Mo, B and Nb in the present invention, and Be and Cu are not contained. The ultimate tensile strength was less than that of example 4, while the corrosion resistance was inferior to that of example 4.
The contents of Mo, B and Nb in the embodiment 2 and the embodiment 3 are all in the range of the comparison group 1 and the comparison group 2, and better indexes of hardness, ultimate tensile strength and corrosivity can be obtained, wherein the overall index is caused by the comparison group 1 and the comparison group 2;
be. Cu, Mo, B and Nb have great influence on the performance indexes of the invention: the addition of the elements Be and Cu mainly plays a role in solid solution strengthening and strength improvement, Mo can improve the toughness and high-temperature heat strength of the product, and the strength is continuously enhanced along with the increase of the content; in the aspect of manufacturability, B improves the balling rate of the powder, and simultaneously generates a hard phase with Cr to improve the hardness; nb is helpful for forming carbide, namely improving the hardness and achieving dispersion; and the Cr is mainly ensured to be solid-melted in the matrix, so that the strength and the oxidation resistance are improved. The alloy powder has higher corrosion resistance, and the welding layer is not cracked and stripped by adopting a laser cladding process, so that the requirements on the wear resistance and the cavitation resistance are met.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A high-strength pitting corrosion resistant alloy powder characterized by: the composition comprises the following components in percentage by weight: c: 0.1-0.2%, Cr: 15.5-19.5%, Ni: 2-13.5%, Mo: 1.5-3%, Nb: 0.8-1.5%, B: 0.6-1.1%, Be: 0.5-2.0%, Cu: 0.5 to 3.0 percent; the balance being Fe.
2. The high-strength pitting corrosion resistant alloy powder according to claim 1, wherein: the composition comprises the following components in percentage by weight: c: 0.1%, Cr: 17.89%, Ni: 13.1%, Mo: 1.5%, Nb: 0.8%, B: 0.7%, Be: 0.5%, Cu: 0.6 percent; the balance being Fe.
3. The high-strength pitting corrosion resistant alloy powder according to claim 1, wherein: the composition comprises the following components in percentage by weight: c: 0.13%, Cr: 17.5%, Ni: 8.5%, Mo: 2.1%, Nb: 1%, B: 0.8%, Be: 1.0%, Cu: 1.5 percent; the balance being Fe.
4. The high-strength pitting corrosion resistant alloy powder according to claim 1, wherein: the composition comprises the following components in percentage by weight: c: 0.12%, Cr: 16%, Ni: 3.75%, Mo: 2.3%, Nb: 1.25%, B: 1.05%, Be: 1.2%, Cu: 1.0 percent; the balance being Fe.
5. The high-strength pitting corrosion resistant alloy powder according to claim 1, wherein: the composition comprises the following components in percentage by weight: c: 0.12%, Cr: 16%, Ni: 2.5%, Mo: 3%, Nb: 1.5%, B: 1.1%, Be: 1.2%, Cu: 1.5 percent; the balance being Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911145836.XA CN110699611B (en) | 2019-11-21 | 2019-11-21 | High-strength anti-pitting alloy powder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911145836.XA CN110699611B (en) | 2019-11-21 | 2019-11-21 | High-strength anti-pitting alloy powder |
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| CN110699611A CN110699611A (en) | 2020-01-17 |
| CN110699611B true CN110699611B (en) | 2021-05-28 |
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| CN115717223B (en) * | 2021-08-24 | 2023-12-15 | 中国石油天然气集团有限公司 | Antimicrobial corrosion-resistant iron-based alloy powder and use method thereof |
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| US8337749B2 (en) * | 2007-12-20 | 2012-12-25 | Ati Properties, Inc. | Lean austenitic stainless steel |
| CN103602922B (en) * | 2013-10-10 | 2016-01-20 | 铜陵新创流体科技有限公司 | A kind of powder metallurgical ferrous alloy and preparation method thereof |
| JP6354592B2 (en) * | 2014-03-04 | 2018-07-11 | セイコーエプソン株式会社 | Metal powder for powder metallurgy, compound, granulated powder and sintered body |
| CN106555127A (en) * | 2016-11-30 | 2017-04-05 | 沈阳大陆激光工程技术有限公司 | A kind of iron(-)base powder that high-speed railway switch platen is manufactured for laser |
| CN108425076A (en) * | 2018-03-16 | 2018-08-21 | 浙江恒基永昕新材料股份有限公司 | A kind of processing mold and its processing method of high-precision powder metallurgical gear |
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