孙慧丽,张毅,柴哲,许倩倩,田保红,刘勇

• 1:河南科技大学材料科学与工程学院
• 2:有色金属共性技术河南省协同创新中心

摘要(Abstract)：

利用Gleeble-1500D热模拟试验机,对Cu-0.2%Zr-0.15%Y合金进行高温热压缩热模拟试验,对合金在应变速率为0.001~1 s-1、变形温度为550~900℃时,试验过程中的流变应力变化、动态再结晶机制及其微观组织变化进行了研究。结果表明,试验合金流变应力受应变温度和变形速率的影响极大,动态再结晶的显微组织对温度的变化反应敏感,当变形温度降低或者应变速率升高时,其流变应力曲线随之上升。通过流变应力、应变速率和变形温度之间的联系,解出了该合金在热压缩变形时的应力指数(n)、应力参数(α)、结构因子(A)、热变形激活能(Q)以及其本构方程。

关键词(KeyWords)： Cu-0.2%Zr-0.15%Y合金;高温热压缩变形;动态再结晶;本构方程

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51101052);; 河南省高等学校青年骨干教师资助计划(2012GGJS-073);; 河南省教育厅自然科学研究计划(2011B430013);; 河南科技大学青年科学基金(2011QN48)

作者(Author): 孙慧丽,张毅,柴哲,许倩倩,田保红,刘勇

DOI: 10.13289/j.issn.1009-6264.2016.04.012

参考文献(References)：

• [1]柴哲,张毅,李瑞卿,等.Cu-Cr-Zr-Y合金热压缩力学行为及热加工图[J].材料热处理学报,2015,36(6):226-231.CHAI Zhe,ZHANG Yi,LI Rui-qing,et al.Hot compression deformation behavior and processing map of Cu-Cr-Zr-Y alloy[J].Transactions of Materials and Heat Treatment,2015,36(6):226-231.
• [2]刘勇,赵瑞龙,田保红,等.W-50%Cu复合材料的高温变形行为及加工图[J].材料热处理学报,2011,32(9):1-5.LIU Yong,ZHAO Rui-long,TIAN Bao-hong,et al.Hot deformation behavior and processing maps of W-50%Cu composite[J].Transactions of Materials and Heat Treatment,2011,32(9):1-5.
• [3]LI Hua-qing,XIE Shui-sheng,MI Xu-jun.Phase and microstructure analysis of Cu-Cr-Zr alloys[J].Material Science and Technology,2007,23(6):795-800.
• [4]董企铭,苏娟华,刘平,等.Cu-Cr-Zr-Mg合金时效析出研究[J].材料热处理学报,2004,25(3):38-41.DONG Qi-ming,SU Juan-hua,LIU Ping,et al.Study on aging precipitation of Cu-Cr-Zr-Mg alloy[J].Transactions of Materials and Heat Treatment,2004,25(3):38-41.
• [5]贾淑果,刘平,宋克兴,等.Cu-Cr-Zr原位复合材料的组织与性能[J].中国有色金属学报,2010,10(7):1334-1337.JIA Shu-guo,LIU Ping,SONG Ke-xing,et al.Microstructures and properties of Cu-Cr-Zr in-situ composites[J].The Chinese Journal of Nonferrous Metals,2010,10(7):1334-1337.
• [6]宋练鹏,尹志民,孙伟,等.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,2006,27(6):66-69.SONG Lian-peng,YIN Zhi-min,SUN Wei,et al.Effect of heat treatment on microstructure and properties of Cu-Ag-Cr and Cu-Ag-Zr alloy[J].Transactions of Materials and Heat Treatment,2006,27(6):66-69.
• [7]BI Li-ming,LIU Ping,CHEN Xiao-hong,et al.Analysis of phase in Cu-15%Cr-0.24%Zr alloy[J].Transactions of Nonferrous Metals Society of China,2013,23(5):1342-1348.
• [8]XIA Cheng-dong,JIA Yan-lin,ZHANG Wan,et al.Study of deformation and aging behaviors of a hot rolled-quenched Cu-Cr-Zr-Mg-Si alloy during thermomechanical treatments[J].Materials Design,2012,39:404-409.
• [9]Suzuki S,Shibutani N,Mimura K,et al.Improvement in strength and electrical conductivity of Cu-Ni-Si alloy by aging and cold rolling[J].Journal of Alloys and Compounds,2006,417(1/2):116-120.
• [10]DING Zong-ye,JIA Shu-guo,ZHAO Pei-feng.Hot deformation behavior of Cu-0.6Cr-0.03Zr alloy during compression at elevated temperatures[J].Materials Science and Engineering A,2013,570(15):87-91.
• [11]张斌,李波,张鸿冰.35Cr Mo钢动态再结晶过程数值模拟与试验研究[J].锻压技术,2004(6):36-39.ZHANG Bin,LI Bo,ZHANG Hong-bing.Value simulation and experiment study of dynamic re-crystal process of 35Cr Mo steel[J].Forging and Stamping Technology,2004(6):36-39.
• [12]李瑞卿,田保红,张毅,等.Cu-Cr-Zr-Ce合金高温热变形行为研究[J].功能材料,2003,44(14):2036-2046.LI Rui-qing,TIAN Bao-hong,ZHANG Yi,et al.Hot deformation behavior of Cu-Cr-Zr-Ce alloy at elevated temperature[J].Journal of Functional Materials,2003,44(14):2036-2046.
• [13]Zener C,Hollomon J H.Problems in non-elastic deformation of metals[J].Journal of Physics D-Applied Physics,1946,17(2):69-82.
• [14]Zener C,Hollomon J H.Effect of strain-rate upon the plastic flow of steel[J].Journal of Physics D-Applied Physics,1944,15(1):22-32.

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