CN100455686C - Copper-zinc-aluminum shape memory alloy abrasion resistance material and manufacturing method for the same - Google Patents
Copper-zinc-aluminum shape memory alloy abrasion resistance material and manufacturing method for the same Download PDFInfo
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- CN100455686C CN100455686C CNB2006101616001A CN200610161600A CN100455686C CN 100455686 C CN100455686 C CN 100455686C CN B2006101616001 A CNB2006101616001 A CN B2006101616001A CN 200610161600 A CN200610161600 A CN 200610161600A CN 100455686 C CN100455686 C CN 100455686C
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Abstract
This invention relates to a wear resisting material of CuZnAl shape memory alloy and its preparation method including: taking electrolytic copper, 0#Zn, 00#Al and electrolytic nickel as the raw materials and adding compound rare earth refining agent in terms of composition match and smelting them to cast them to ingots when the temperature of the alloy fluid reaches to 1230-1250deg.C to be heated to 800-820deg.C for 24h then cooled along with the furnace to remove the 2-3mm dezincifying layer on the surface and forged to a plate, then two-stage time effect heat process is done under 830-870deg.C+130-170deg.C+40-60deg.C, and the wear resisting material includes the components in terms of mass percentages: Zn 24.5-26%, Al 3.7-3.8%, Ni 0.9-1.0% and compound rare earth refining agent 0.06-0.09%, which includes the components in terms of mass percentages: La 45.5%, Ce 44.9%, Pr 7.7%, Nd 1.9% and copper.
Description
Technical field
The present invention relates to a kind of preparing technical field of shape memory alloy material, special a kind of copper-zinc-aluminum shape memory alloy abrasion resistance material.
Background technology
Copper alloy is widely used on bearing shell, compression spring, worm gear, the worm screw as high-abrasive material.Ampco and tinbronze are to use two kinds of alloys more widely.The problem that these two kinds of materials exist is: 1, casting technique more complicated, and processability is poor, and the yield rate when causing producing is low; 2, cost is higher, causes productivity effect low.Document 1, Wang Hongwei etc.: the research of Cu base marmem dry sliding wear, Acta Metallurgica Sinica .1991,27 (6) A445-448; 2, Wang Fengting: CuZnAl shape memory alloy Wear Resistance, the journal .1991 of Dalian University of Technology, 31 (2) 245-248} have studied the dry wear performance of copper-zinc-aluminum shape memory alloy, and the polishing machine under the load-up condition is decided in oil lubrication.But for after adopting the compound rare-earth thinning method to improve the mechanical property of copper-zinc-aluminum shape memory alloy and preventing that martensite is stable, under the dry sliding wear condition, different heat treatment technology, load, wearing-in period and transformation temperature are to all unprecedented reports of research such as influence of copper-zinc-aluminum shape memory alloy polishing machine, through inquiry, also not seeing has relevant patent to deliver.
Summary of the invention
The purpose of this invention is to provide a kind of copper zinc-aluminium (compound rare-earth) shape memory alloy, its cost only is 75%～85% of tinbronze, an ampco, and wear resisting property improves more than 100% than tinbronze, ampco.
A kind of copper-zinc-aluminum shape memory alloy abrasion resistance material, it is characterized by: with electrolytic copper, 0# zinc, 00# aluminium, electrolytic nickel is starting material, by mass percentage, Zn24.5%～26%, Al3.7%～3.8%, Ni0.9%～1.0%, 0.06%～0.09% compound rare-earth fining agent, the composition of compound rare-earth fining agent is La45.5% in mass percent, Ce44.9%, Pr7.7%, Nd1.9%, Yu Weitong is to guarantee that obtaining alloy phase height Af is 70 ℃, wherein with Zn25.25%, Al3.74%, Ni0.98%, 0.07% compound rare-earth fining agent are best.
The preparation method of above-mentioned copper-zinc-aluminum shape memory alloy abrasion resistance material, it is characterized in that: starting material are added the compound rare-earth fining agent by composition proportion carry out melting, when the alloy liquid temp reaches 1230 ℃～1250 ℃, pour into ingot casting, be heated to 800 ℃～820 ℃ the insulation 24 hours after furnace cooling, remove the dezincify layer of surface 2～3mm then, forge into sheet material again, under 830～870 ℃+130～170 ℃+40～60 ℃ conditions, carry out the thermal treatment of two-stage timeliness, being the best with the thermal treatment of 850 ℃+150 ℃+50 ℃ of two-stage timeliness wherein, also is to guarantee that acquisition alloy phase height Af is 70 ℃.
Description of drawings
Fig. 1 is under 294N load, the identical abrasive conditions, different copper alloy wear surface electromicroscopic photographs.
The relation of Fig. 2 wear weight loss and alloy phase height
Embodiment
With electrolytic copper, 0# zinc and 00# aluminium is starting material, Zn25.82%, Al3.76%, Ni0.96%, Yu Weitong.The compound rare-earth fining agent of adding 0.07%, wherein: La45.5%, Ce44.9%, Pr7.7%, Nd1.9%, through the medium-frequency induction furnace melting, when the alloy liquid temp reaches 1240 ℃, pour into the ingot casting that diameter is φ 80 * 150mm, anneal be heated to 820 ℃ the insulation 24 hours after furnace cooling, remove the dezincify layer of surface 2～3mm then, forge thick sheet material again to 11mm.Alloy heat treatment process is: the thermal treatment of 850 ℃+150 ℃+50 ℃ of two-stage timeliness.Wearing test adopts the MM-200 wear testing machine, and sample is of a size of 19.5 * 10 * 8 (mm), weighs and adopts ten thousand/optical electrobalance.
Fig. 1 is under 294N load, the identical abrasive conditions, different copper alloy wear surface electromicroscopic photographs.Two kinds of common ordinary copper alloys are under identical abrasive conditions, and wear surface is coarse, and the defective of appearance is more, and the wear mechanism of alloy is mainly micro cutting.Major cause is, alloy produces viscous deformation under the load effect, the ordinary copper hardness of alloy is well below through the 45# of modifier treatment steel, the microprotrusion of 45# steel is moved with friction ring at alloy surface with the abrasive dust through pushing repeatedly, alloy surface is formed micro cutting, cause ordinary copper alloy weightlessness.Copper zinc-aluminium (compound rare-earth) shape memory alloy is after the effect of 294N load, and wear surface is brighter and cleaner.Under same load effect, copper zinc-aluminium (compound rare-earth) shape memory alloy not only produces viscous deformation, and generation recoverable deformation, its amount of plastic deformation is far smaller than the ordinary copper alloy, viscous deformation is again the prerequisite of alloy weightlessness, simultaneously the expansion of stress-induced martensite phase transformation reduction tiny crack.Therefore, copper zinc-aluminium (compound rare-earth) 1 shape memory alloy wear resistance is better than ordinary copper alloy.
Copper zinc-aluminium (compound rare-earth) shape memory alloy abrasion resistance material wear resisting property is good than other copper alloy wear resisting propertys as can be seen from Table 1.
Table 1 different loads is to the influence of different-alloy polishing machine
The relation of Fig. 2 wear weight loss and alloy phase height, the composition of copper zinc-aluminium (compound rare-earth) shape memory alloy abrasion resistance material is Zn25.82% as can be seen, Al3.76%, Ni0.96%, during Yu Weitong, when promptly alloy phase height Af was 70 ℃, alloy wear-resisting was best.
Claims (4)
1, a kind of copper-zinc-aluminum shape memory alloy abrasion resistance material, it is characterized by: with electrolytic copper, 0# zinc, 00# aluminium, electrolytic nickel is starting material, by mass percentage, Zn24.5%～26%, Al3.7%～3.8%, the compound rare-earth fining agent of Ni0.9%～1.0%, 0.06%～0.09%, surplus are copper; The composition of compound rare-earth fining agent is in mass percent, La45.5%, Ce44.9%, Pr7.7%, Nd1.9%.
2, copper-zinc-aluminum shape memory alloy abrasion resistance material according to claim 1 is characterized in that: Zn25.25%, and Al3.74%, Ni0.98%, compound rare-earth fining agent are 0.07%.
3, the preparation method of copper-zinc-aluminum shape memory alloy abrasion resistance material according to claim 1, it is characterized in that: starting material are added the compound rare-earth fining agent by composition proportion carry out melting, when the alloy liquid temp reaches 1230 ℃～1250 ℃, pour into ingot casting, be heated to 800 ℃～820 ℃ the insulation 24 hours after furnace cooling, remove the dezincify layer of surface 2～3mm then, forge into sheet material again, under 830～870 ℃+130～170 ℃+40～60 ℃ conditions, carry out the thermal treatment of two-stage timeliness.
4, the preparation method of copper-zinc-aluminum shape memory alloy abrasion resistance material according to claim 3 is characterized in that: carry out the thermal treatment of two-stage timeliness under 850 ℃+150 ℃+50 ℃ conditions.
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Families Citing this family (14)
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| CN101886187B (en) * | 2010-07-14 | 2011-11-09 | 南京信息工程大学 | Shape memory copper alloy and preparation method thereof |
| CN101886186B (en) * | 2010-07-14 | 2011-10-12 | 南京信息工程大学 | High temperature shape memory copper alloy and preparation method thereof |
| CN101928857B (en) * | 2010-07-14 | 2012-08-29 | 南京信息工程大学 | Abrasion-resistant antifriction copper alloy composite material and preparation method thereof |
| CN102794440B (en) * | 2012-09-08 | 2013-12-11 | 镇江忆诺唯记忆合金有限公司 | Compound rare earth additive for low-ferromanganese-based memory alloy |
| CN103255314A (en) * | 2013-06-05 | 2013-08-21 | 镇江忆诺唯记忆合金有限公司 | Copper-zinc-aluminum shape memory alloy with improved frictional wear resistance |
| CN104233038A (en) * | 2013-06-08 | 2014-12-24 | 镇江忆诺唯记忆合金有限公司 | Copper-zinc-aluminium memory alloy capable of increasing rolling abrasion performance in alkaline medium |
| CN104233132A (en) * | 2013-06-13 | 2014-12-24 | 镇江忆诺唯记忆合金有限公司 | Heat treatment technology for improving room-temperature mechanical properties of copper-zinc-aluminium shape memory alloy |
| CN104342593A (en) * | 2013-08-04 | 2015-02-11 | 镇江忆诺唯记忆合金有限公司 | Copper-zinc-aluminum memory alloy for improving phase transformation point stability under hot and cold cycles |
| CN103421983B (en) * | 2013-08-23 | 2015-08-19 | 苏州长盛机电有限公司 | A kind of preparation method of pack fong |
| CN104164589B (en) * | 2014-08-06 | 2016-05-11 | 中国兵器科学研究院宁波分院 | A kind of high-strength wearable copper alloy and preparation method thereof |
| CN106099086B (en) * | 2015-12-18 | 2018-07-20 | 华南理工大学 | The porous copper-zinc-aluminum shape memory alloy composite material and preparation method of micro-nano and application |
| CN110629066B (en) * | 2019-09-27 | 2020-09-11 | 黄山市龙跃铜业有限公司 | High-strength corrosion-resistant brass material and preparation method thereof |
| CN110951989B (en) * | 2019-12-25 | 2020-11-06 | 鸣浩高新材料科技(江苏盐城)有限公司 | High-strength and high-toughness copper-zinc-aluminum shape memory alloy and preparation method thereof |
| CN111304487B (en) * | 2020-03-24 | 2021-05-25 | 安新县华昌合金厂 | Copper-based shape memory alloy and preparation method and application thereof |
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