Cu-Cr系合金因其具有高强度、高导电以及优异的耐磨损性能，被广泛应用于电气化铁路接触导线、连续铸造结晶器内衬、异步牵引电动机转子以及耐磨电触头等。应用ProCAST软件中的CA-FE法对Cu-0.1Cr-0.08Zr-0.08Ag合金的凝固过程进行了模拟。结果表明：Cu-Cr-Zr-Ag合金凝固时，铸坯外表面沿模壁产生细晶薄层后，随之形成几何取向一致的柱状晶，而铸坯的心部则是由恀多粗大的等轴晶所组成。随着冷却速度的加大，合金铸坯晶粒变得更为细小。模拟结果与实验结果基本吻合，检验了模型的正确性。
Due to high strength, high conductivity and excellent wear resistance, Cu-Cr alloys are widely used in electrified railway contact wire, continuous casting crystallization lining, asynchronous traction motor rotor and wear-resistant electrical contacts. The simulation of the solidification structures in the solidification process of Cu-0.1Cr-0.08Zr-0.08Ag alloy was carried out by CA-FE method in ProCAST. The results show that, during solidification process, along the outer surface of the mold wall, the thin layer of fine grains is produced, and then the columnar grains with consistent geometric orientation are formed, while the core of the casting billet is composed of many equiaxed grains. With the increasing of cooling rate, the grains become smaller. The calculation results fit the experimental ones well, and then the validity of the model is tested.
参考文献
| [1] | 王志强,钟云波,饶显君,汪超,王江,张增光,任维丽,任忠鸣.Cu-Cr-Zr合金在施加直流电流时效后的电性能和力学性能[J].中国有色金属学报,2012(05):1106-1111. |
| [2] | Dadras M M;Morris D G .Examination of some highstrength,high-conductivity copper alloys for high temperature applications[J].Scripta Materialia,1998,38(02):199-205. |
| [3] | 谢明,张吉明,王松,恭恬洁,杨有才,程勇,刘满门,陈永泰,余建树,史庆南,王塞北.高强高导 CuCr合金的显微组织与性能研究[J].电工材料,2011(04):10-13. |
| [4] | 贾淑果,刘平,宋克兴,陈讲彪,陈小红,田保红,任凤章.Cu-Cr-Zr原位复合材料的组织与性能[J].中国有色金属学报,2010(07):1334-1338. |
| [5] | 慕思国,曹兴民,汤玉琼,向朝建,杨春秀,郭富安,唐谟堂.时效态Cu-Cr-Zr-Mg-RE合金的组织与性能[J].中国有色金属学报,2007(07):1112-1118. |
| [6] | 刘克明,陆德平,周海涛,A.Atrens,邹晋,杨艳玲.形变Cu-Cr-Ag原位复合材料组织和性能[J].稀有金属材料与工程,2011(11):1931-1935. |
| [7] | 王庆娟,徐长征,郑茂盛.高性能Cu-Cr-Ag合金的软化性能[J].特种铸造及有色合金,2006(11):691-693. |
| [8] | XIE Haofeng,MI Xujun,HUANG Guojie,GAO Baodong,YIN Xiangqian,LI Yanfeng.Effect of thermomechanical treatment on microstructure and properties of Cu-Cr-Zr-Ag alloy[J].稀有金属（英文版）,2011(06):650-656. |
| [9] | 宋练鹏,尹志民,孙伟,戴姣燕,吴燕华.形变热处理对Cu-Ag-Cr和Cu-Ag-Zr合金组织和性能的影响[J].材料热处理学报,2006(06):66-69. |
| [10] | 刘勇,刘平,田保红,贾淑果,王艳蕊.接触线用微合金化Cu-Ag-Cr合金时效析出行为和电磨损机理探讨[J].材料热处理学报,2007(z1):34-37. |
| [11] | 刘勇,刘平,李伟,田保红.Cu-Cr-Zr-Y合金时效析出行为研究[J].功能材料,2005(03):377-379. |
| [12] | 刘勇,刘平,李伟,田保红.Cu-Cr-Zr-Ce合金时效行为和电滑动磨损性能研究[J].摩擦学学报,2005(03):265-269. |
| [13] | 胡红军.ProCAST软件的特点及其在铸件成形过程中的应用[J].热加工工艺,2005(01):70-71. |
| [14] | 邱桂永,韩建民,杨智勇,李卫京,王金华.凝固模拟参数设置合理性的检验方法研究及应用[J].铸造,2007(09):952-955. |
| [15] | 宋玉华,颜永年,张人佶,卢清萍,徐达.铸件/铸型边界模型对用于RT的凝固模拟精度影响的研究[J].清华大学学报(自然科学版),2001(02):16-20. |
| [16] | 胡红军,杨明波,罗静,王春欢,陈康.ProCAST软件在铸造凝固模拟中的应用[J].材料科学与工艺,2006(03):293-295. |
| [17] | 王宥宏,孙占波,宋晓平.Cu-Cr合金快淬带的凝固数值模拟[J].中国有色金属学报,2005(07):1045-1050. |
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