张毅,柴哲,许倩倩,田保红,刘勇,刘平,陈小红

• 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
• 3:上海理工大学材料科学与工程学院

摘要(Abstract)：

对Cu-Cr-Zr-Ag合金在Gleeble-1500D热模拟试验机上进行热压缩实验,对合金在应变速率为0.001~10 s-1、变形温度为650~950℃的高温变形过程中的流变应力行为、热变形过程中的组织演变和动态再结晶机制进行了研究。结果表明,流变应力随变形温度升高而减小,随应变速率提高而增大。Cu-Cr-Zr-Ag合金在热变形过程中的动态再结晶机制受变形温度和应变速率控制。当温度达到950℃,应变速率为0.001 s-1时,Cu-Cr-Zr-Ag合金发生完全的动态再结晶。该合金高温热压缩变形时的热变形激活能Q为343.23 k J/mol,同时利用逐步回归法建立了该合金的流变应力方程。

关键词(KeyWords)： Cu-Cr-Zr-Ag合金;高温压缩;流变应力方程;热激活能;动态再结晶

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): 张毅,柴哲,许倩倩,田保红,刘勇,刘平,陈小红

DOI: 10.13289/j.issn.1009-6264.2015.04.008

参考文献(References)：

• [1]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-mei,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 Treatment,2003,24(4):22-26.
• [2]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.
• [3]刘平,雷静果,井晓天,等.基于神经网络的Cu-Ni-Si-Cr合金时效性能预测研究[J].材料热处理学报,2005,26(1):86-89.LIU ping,LEI Jing-guo,JING Xiao-tian,et al.Study of predicting properties for aged Cu-Ni-Si-Cr alloy based on artificial neural network[J].Transactions of Materials and Heat Treatment,2005,26(1):86-89.
• [4]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.
• [5]苏娟华,刘平,董企铭,等.Cu-Cr-Zr合金时效强化机理[J].材料热处理学报,2005,26(6):62-65.SU Juan-hua,LIU Ping,DONG Qi-ming,et al.Strengthening mechanism of aged Cu-Cr-Zr alloy[J].Trans of Mater and Heat Treat,2005,26(6):62-65.
• [6]ZHANG Hui,ZHANG Hong-gang,LI Luo-xing.Hot deformation behavior of Cu-Fe-P alloys during compression at elevated temperatures[J].Journal of Materials Processing Technology,2009,209(6):2892-2896.
• [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]Hanzelka P,Musilova V,Kralik T,et al.Thermal conductivity of a Cu Cr Zr alloy from 5 K to room temperatures[J].Cryogenics,2010,50(11/12):737-742.
• [9]Jayakumar P K,Balasubramanian K,Rabindranath Tagore G.Recrystallisation and bonding behaviour of ultra fine grained copper and Cu-Cr-Zr alloy using ECAP[J].Materials Science and Engineer A,2012,538(15):7-13.
• [10]杨志强,刘勇,田保红,等.10vol%Ti C/Cu-Al2O3复合材料热变形及动态再结晶行为[J].材料热处理学报,2013,34(12):35-39YANG Zhi-qiang,LIU Yong,TIAN bao-hong.Hot deformation and dynamic recrystallization behavior of10vol%Ti C/Cu-Al2O3composite[J].Transactions of Materials and Heat Treatment,2013,34(12):35-39.
• [11]DENG Ying,YIN Zhi-min,HUANG Ji-wu.Hot deformation behavior and microstructural evolution of homogenized 7050aluminum alloy during compression at elevated temperature[J].Materials Science and Engineering A,2011,528(3):1780-1786.
• [12]Momeni A,Dehghani K.Characterization of hot deformation behavior of 410 martensitic stainless steel using constitutive equations and processing maps[J].Materials Science and Engineering A,2010,527(21/22):5467-5473.
• [13]Srinivasan N,Prasad Y V R K,Rao P R.Hot deformation behavior of Mg-3Al alloy study using processing map[J].Materials Science and Engineering A,2008,476(2):146-156.
• [14]Gronostajski Z.The deformation processing map for control of microstructure in Cu Al9.2Fe3 aluminium bronze[J].Journal of Materials Processing Technology,2002(9):119-124.
• [15]Prasad Y V R K,Rao K P.Processing maps for hot deformation of rolled AZ31 magnesium alloy plate:Anisotropy of hot workability[J].Materials Science and Engineer A,2012,487(1/2):316-327.

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