CN104233065B - A kind of SiC reinforcement iron aluminium composite material and preparation method thereof - Google Patents
A kind of SiC reinforcement iron aluminium composite material and preparation method thereof Download PDFInfo
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- CN104233065B CN104233065B CN201410427838.9A CN201410427838A CN104233065B CN 104233065 B CN104233065 B CN 104233065B CN 201410427838 A CN201410427838 A CN 201410427838A CN 104233065 B CN104233065 B CN 104233065B
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Abstract
The present invention relates to a kind of composite, particularly a kind of SiC reinforcement iron aluminium composite material and preparation method thereof.The composite is made up of SiC reinforcement body and ferroaluminium matrix, and the reinforcement accounts for the 0.1 1% of composite gross mass, and remaining is ferroaluminium matrix；The SiC reinforcement body is SiC particulate, and particle diameter is 1 5nm.The preparation method includes：Dispensing, the pretreatment of SiC reinforcement body, melting, homogenizing annealing, forging, hot rolling, wire drawing and Technology for Heating Processing.Finished material prepared by the present invention has good elevated temperature strength and inoxidizability, and low thermal coefficient of expansion, deficiency of the prior art is overcome, with good prospects for commercial application.
Description
Technical field：
The present invention relates to a kind of composite, particularly a kind of SiC reinforcement iron aluminium composite material and preparation method thereof.
Background technology：
Electrothermal alloy material is the electric resistance alloy that heater is manufactured using the resistance characteristic of material.Current electrothermal alloy material
Turn into a kind of important engineering alloy material, it is adaptable to the industry such as machinery, metallurgy, electronics, chemical industry, occupy in national economy
Consequence.The electric heating element for being commercially used for less than 1300 DEG C mainly uses nichrome and Aludirome.Nickel chromium triangle is closed
Gold is expensive, and when temperature is more than 1000 DEG C, inoxidizability is significantly reduced.Aludirome phosphorus content is higher, alloying element
Single, in applied at elevated temperature, internal grain is grown up, and netted precipitate easily causes brittle failure on crystal boundary, has a strong impact on industrial application.
Prior art discloses a kind of new high-resistance electrothermal alloy material (CN1155590A), its alloy formula is Fe- (24-32)
Al- (0.01-0.2) Ce- (1-6) a, a are one or both of Cr and Mn；Fe- (24-32) Al- (0.01-0.2) Ce (or
B)-(0.01-0.3) Zr- (1-6) a- (0.1-2) b, a are one or both of Cr and Mn, b be one kind in W, Mo, Nb or
Several, the resistivity of above-mentioned alloy, high temperature oxidation resistance are better than nichrome and Aludirome, but its performance is still suffered from into one
Walk the space of lifting.
The content of the invention：
It is an object of the invention to overcome it is of the prior art it is not enough there is provided one kind there is good elevated temperature strength, it is anti-oxidant
Property and the smaller SiC reinforcement iron aluminium composite material of thermal coefficient of expansion and preparation method thereof.
A kind of SiC reinforcement iron aluminium composite material, it is characterised in that the composite is by SiC reinforcement body and iron
Alloy matrix aluminum is constituted, and the reinforcement accounts for the 0.1-1% of composite gross mass, and remaining is ferroaluminium matrix；The carbon
SiClx reinforcement is SiC particulate, and particle diameter is 1-5nm, and the element composition and mass percent of ferroaluminium matrix are：C：0.01-
0.02%th, Si：0.2-0.6%, Al：24-26%, Zr：3-4%, Ni：0.2-0.4%, Hf：1-2%, Nb：1-2%, V：1-
2%th, Mo：0.8-1.3%, Ce：0.8-1.4%, B：0.01-0.015%, S≤0.001%, P≤0.001%, surplus be iron and
Inevitable impurity, the iron material part used is iron powder, and other is iron block.
The preparation method of above-mentioned SiC reinforcement iron aluminium composite material, it is characterised in that the preparation method includes：
(1) dispensing：SiC reinforcement body accounts for the 0.1-1% of composite gross mass, the element composition of ferroaluminium matrix
And mass percent is：C：0.01-0.02%, Si：0.2-0.6%, Al：24-26%, Zr：3-4%, Ni：0.2-0.4%,
Hf：1-2%, Nb：1-2%, V：1-2%, Mo：0.8-1.3%, Ce：0.8-1.4%, B：0.01-0.015%, S≤
0.001%th, P≤0.001%, surplus is iron and inevitable impurity, and the iron material part used is iron powder, and other is iron
Block；
(2) SiC reinforcement body is pre-processed：To improve wetability of the SiC particulate in alloy melt, first by SiC particulate with
Iron powder in raw material is uniformly mixed, and is placed in vacuum ball mill ball milling 18-24 hours；
(3) melting：Mixed-powder after ferroaluminium matrix material and ball milling is put into magnetic levitation vacuum induction melting furnace
Interior melting obtains ingot casting；
(4) homogenizing annealing：Ingot casting after cooling is put into vacuum heat treatment furnace, in vacuum 1 × 10-3Pa, temperature
Furnace cooling after being incubated 10 hours at 900 DEG C；
(5) forge：Ingot casting after homogenizing annealing is put into isothermal forging machine and forged, total deformation is more than 50%, forging
Temperature is made for 1000 DEG C, oil quenching after length of side 100mm square billet, forging is obtained；
(6) hot rolling, wire drawing and heat treatment：Sample after forging is subjected to hot rolling first, every time deflection≤25% is obtained
Diameter 8-10mm silk material is obtained, 1100 DEG C, solution heat treatment in 2 hours is then carried out, then implements three passage wire drawings, draws for the first time
Silk is worked into diameter 6mm, and second of Wire Drawing to diameter 3mm, third time Wire Drawing to diameter 1mm finally carries out 400
DEG C, destressing heat treatment in 8 hours, obtain SiC reinforcement iron aluminium composite material finished product.
SiC reinforcement iron aluminium composite material prepared by the present invention has good elevated temperature strength, inoxidizability and smaller
Thermal coefficient of expansion.The presence of nanometer silicon carbide, can play a part of dispersion-strengtherning, dislocation movement by slip is formed hindered at high temperature
Hinder, effectively improve the intensity under alloy high-temp, while improving the high-temperature oxidation resistance of alloy.Due to the thermal expansion system of carborundum
Number is much smaller than ferroaluminium matrix, and therefore, the presence of carborundum also can effectively lower the thermal coefficient of expansion of composite.
With Fe3Al high temperature alloys are matrix, and addition Rare-Earth Ce can purify alloy substrate, improve field trash pattern, refinement
Crystal grain, while the oxygen-enriched particle in grain boundaries formation can form obstruction to dislocation movement by slip, so as to improve alloy strength；Micro B
Addition play an important roll for improving alloy plasticity and processing characteristics；Can by adding Zr, Ni, Hf, Nb, V, Mo element
Effectively improve the high temperature resistance inoxidizability and resistivity of alloy.In addition, the present invention further improves hot rolling, wire drawing and heat treatment work
Skill, by implementing three passage wire drawings (first time Wire Drawing to diameter 6mm, second of Wire Drawing to diameter 3mm, third time
Wire Drawing is to diameter 1mm), production efficiency is effectively improved, the effect of reinforcing silk material, 1100 DEG C, 2 hours solid solution heat is sufficiently achieved
Processing and 400 DEG C, destressing heat treatment in 8 hours can optimize morphology of carbides, fully release silk material internal stress, and improving silk material makes
Use the life-span.
Embodiment：
It is expanded on further below by embodiment and understands the present invention.
(1) dispensing：SiC reinforcement body accounts for the 0.9% of composite gross mass, the element composition of ferroaluminium matrix and
Mass percent is：C：0.015%th, Si：0.4%th, Al：25%th, Zr：3.2%th, Ni：0.3%th, Hf：1.6%th, Nb：1.7%th,
V：1.2%th, Mo：1%th, Ce：0.9%th, B：0.013%th, S≤0.001%, P≤0.001%, surplus are iron and inevitable
Impurity, the iron material part used is iron powder, and other is iron block；
(2) pretreatment of SiC reinforcement body is molten：To improve wetability of the SiC particulate in alloy body, first by SiC particulate with
Iron powder in raw material is uniformly mixed, and is placed in ball milling 20 hours in vacuum ball mill；
(3) melting：Mixed-powder after ferroaluminium matrix material and ball milling is put into magnetic levitation vacuum induction melting furnace
Interior melting obtains ingot casting；
(4) homogenizing annealing：Ingot casting after cooling is put into vacuum heat treatment furnace, in vacuum 1 × 10-3Pa, temperature
Furnace cooling after being incubated 10 hours at 900 DEG C；
(5) forge：Ingot casting after homogenizing annealing is put into isothermal forging machine and forged, total deformation is more than 50%, forging
Temperature is made for 1000 DEG C, oil quenching after length of side 100mm square billet, forging is obtained；
(6) hot rolling, wire drawing and heat treatment：Sample after forging is subjected to hot rolling first, every time deflection≤25% is obtained
Diameter 9mm silk material is obtained, 1100 DEG C, solution heat treatment in 2 hours is then carried out, then implements three passage wire drawings, first time wire drawing
Be worked into diameter 6mm, second of Wire Drawing to diameter 3mm, third time Wire Drawing to diameter 1mm, finally carry out 400 DEG C, 8
Hour destressing heat treatment, obtains SiC reinforcement iron aluminium composite material finished product.
Composite finished product prepared by the embodiment of the present invention has higher elevated temperature strength and inoxidizability, while having more
Small thermal coefficient of expansion, 600 DEG C of Tensile strengths reach 610MPa, and 1200 DEG C of oxidation weight gains are only Fe under equal conditions3Al alloys
The 40% of oxidation weight gain, 800 DEG C of thermal expansions are only Fe under equal conditions3The 50% of Al alloys, overcome it is of the prior art not
Foot, with wider prospects for commercial application.
Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and is not to the present invention
The restriction of embodiment.For those of ordinary skill in the field, it can also be made on the basis of the above description
Its various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.And these belong to this hair
Among the obvious changes or variations that bright spirit is extended out is still in protection scope of the present invention.
Claims (1)
1. a kind of SiC reinforcement iron aluminium composite material, it is characterised in that the composite is by SiC reinforcement body and iron aluminium
Alloy substrate is constituted, and the reinforcement accounts for the 0.1-1% of composite gross mass, and remaining is ferroaluminium matrix；The carbonization
Silicon reinforcement is SiC particulate, and particle diameter is 1-5nm, and the element composition and mass percent of ferroaluminium matrix are：C：0.01-
0.02%th, Si：0.2-0.6%, Al：24-26%, Zr：3-4%, Ni：0.2-0.4%, Hf：1-2%, Nb：1-2%, V：1-
2%th, Mo：0.8-1.3%, Ce：0.8-1.4%, B：0.01-0.015%, S≤0.001%, P≤0.001%, surplus be iron and
Inevitable impurity, the iron material part used is iron powder, and other is iron block；Its preparation method includes：(1) dispensing：Press
Proportioning according to the composite carries out dispensing；(2) SiC reinforcement body is pre-processed：To improve SiC particulate in alloy melt
Wetability, first SiC particulate is uniformly mixed with the iron powder in raw material, is placed in vacuum ball mill ball milling 18-24 hours；
(3) melting：Mixed-powder after ferroaluminium matrix material and ball milling is put into melting in magnetic levitation vacuum induction melting furnace to obtain
Obtain ingot casting；(4) homogenizing annealing：Ingot casting after cooling is put into vacuum heat treatment furnace, in vacuum 1 × 10-3Pa, temperature
Furnace cooling after being incubated 10 hours at 900 DEG C；(5) forge：Ingot casting after homogenizing annealing is put into isothermal forging machine and forged,
Total deformation is more than 50%, and forging temperature is 1000 DEG C, obtains oil quenching after length of side 100mm square billet, forging；(6) hot rolling, wire drawing
And heat treatment：Sample after forging is subjected to hot rolling first, every time deflection≤25% obtains diameter 8-10mm silk material,
1100 DEG C, solution heat treatment in 2 hours are then carried out, then implements three passage wire drawings, first time Wire Drawing to diameter 6mm, the
Secondary Wire Drawing is to diameter 3mm, third time Wire Drawing to diameter 1mm, finally carries out 400 DEG C, at the heat of destressing in 8 hours
Reason, obtains SiC reinforcement iron aluminium composite material finished product.
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| CN107299286A (en) * | 2017-05-31 | 2017-10-27 | 成都小柑科技有限公司 | A kind of inorganic nano-particle strengthens ferroalloy composite |
| CN107264682A (en) * | 2017-05-31 | 2017-10-20 | 成都小柑科技有限公司 | A kind of bicycle seat of height-adjustable |
| CN108149150A (en) * | 2017-12-07 | 2018-06-12 | 北京科技大学 | One kind contains ZrO2Nano particle reinforced abrasion-resistant stee and preparation method |
| CN110216288B (en) * | 2019-07-03 | 2021-07-30 | 江西宝航新材料有限公司 | Method for printing aluminum silicon carbide composite material wire through electric arc additive manufacturing |
| CN110548829B (en) * | 2019-09-06 | 2020-11-10 | 哈尔滨工业大学 | Forging method for controlling directional arrangement of aluminum matrix composite whiskers |
| CN111764968A (en) * | 2020-05-19 | 2020-10-13 | 有研金属复材技术有限公司 | Aluminum-based composite material supercharging-stage integral vane ring structure of aircraft engine and preparation method thereof |
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| CN1038050C (en) * | 1993-05-05 | 1998-04-15 | 东南大学 | Fe-Al-Ce high-temp. alloy |
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