张毅,刘平,田保红,范莉,贾淑果,刘勇,任凤章

• 1:河南科技大学材料科学与工程学院
• 2:上海理工大学机械工程学院

摘要(Abstract)：

采用Gleeble-1500D热模拟试验机,对Cu-Ni-Si-Cr合金在变形温度为600～800℃、应变速率为0.01～5 s-1条件下的动态再结晶行为以及组织转变进行了研究,分析了实验合金在高温变形时的流变应力和应变速率及变形温度之间的关系,并研究了在热压缩过程中组织的变化。结果表明:应变速率和变形温度的变化强烈地影响合金流变应力的大小,流变应力随变形温度升高而降低,随应变速率提高而增大,材料显微组织强烈受到变形温度的影响。

关键词(KeyWords)： Cu-Ni-Si-Cr合金;热压缩变形;动态再结晶

Abstract:

Keywords:

基金项目(Foundation): 国家高新技术研究发展计划(863计划)资助项目(2006AA03Z528);; 国家自然科学基金(50571035);; 河南省杰出青年基金(0521001200);; 河南省教育厅自然科学研究计划(2011B430013);; 河南科技大学博士启动基金(09001414)

作者(Author): 张毅,刘平,田保红,范莉,贾淑果,刘勇,任凤章

DOI: 10.13289/j.issn.1009-6264.2011.s1.015

参考文献(References)：

• [1]Liu P,Kang B X,Cao X Guo.Aging precipitation and recrystallization of rapidly solidified Cu-Cr-Zr-Mg alloy[J].The Chinese Journal of Nonferrous Metals,1999,9(2):241-246.
• [2]Virtanen P,Tiainen T.Stress relaxation behaviour in bending of high strength copper alloys in the Cu-Ni-Sn system[J].Materials Science and Engineering A,1997,238:407-410.
• [3]Suzuki S,Shibutani N,Mimura K,et al.Improvement in strength and electrical conductivity of CuNiSi alloy by aging and cold rolling[J].Journal of Alloys and Compounds,2006,417:116-120.
• [4]雷静果,刘平,赵冬梅,等.用导电率研究Cu-Ni-Si-Cr合金时效早期相变动力学[J].材料热处理学报,2003,24(4):22-25.LEI Jing-guo,LIU Ping,ZHAO Dong-me,et al.Study on the transformation kinetics of early stage aging of Cu-Ni-Si Alloy by measuring the electric conductivity[J].Transactions of Materials and Heat Treament,2003,24(4):22-26.
• [5]SU Juan-hua,DONG Qi-ming,LIU Ping,et al.Research on aging precipitation in a Cu-Cr-Zr-Mg alloy[J].Materials Science and Engineering A,2005,392(1-2):422-426.
• [6]Witusiewicz V T,Arpshofen I,Seifert H J,et al.Enthalpy of mixing of liquid and undercooled liquid ternary and quaternary Cu-Ni-Si-Zr alloys[J].Journal of Alloys and Compounds,2002,337:155-167.
• [7]Kokorin V V,Kozlova L E,Titenko A N.Temperature hysteresis of martensite transformation in aging Cu-Mn-Al alloy[J].Scripta Materialia,2002,47:499-502.

文章评论(Comment)：