刘勇,耿昊,朱顺新,田保红,张毅,顾正彬

• 1:河南科技大学材料科学与工程学院
• 2:河南省有色金属材料科学与加工技术重点实验室
• 3:中国船舶重工集团公司第七一三研究所
• 4:南京大学材料科学与工程系

摘要(Abstract)：

利用Gleeble-1500D型热模拟试验机在变形温度为650~950℃、应变速率为0.001~1 s-1、变形量为60%的条件下对10%Cr/Cu复合材料进行热模拟压缩试验。依据热模拟实验数据,绘制出10%Cr/Cu复合材料的流变应力曲线,分析变形温度、应变速率对流变应力的影响。用线性回归法确定出10%Cr/Cu复合材料的热变形激活能(Q)和高温变形本构关系模型,并引入应变对模型进行修正,最后通过误差分析验证了方程的可靠性。结果表明:10%Cr/Cu复合材料的流变应力随温度的升高和应变速率的降低而减少;计算得出10%Cr/Cu复合材料的热变形激活能为260.7 kJ/mol;建立了复合材料的本构方程,对构建的本构方程模型进行误差验证得出平均相对误差为7.39%;利用Avrami模型求出了复合材料的动态再结晶分数模型,该模型表明在高温和较低应变速率条件下有利于该材料发生动态再结晶。

关键词(KeyWords)： 10%Cr/Cu复合材料;流变应力;本构方程;再结晶动力学模型

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(U1704143);; 河南省科技开放合作项目(182106000018)

作者(Author): 刘勇,耿昊,朱顺新,田保红,张毅,顾正彬

DOI: 10.13289/j.issn.1009-6264.2018-0169

参考文献(References)：

• [1]罗丰华,尹志民,左铁镛.Cu Zn(Cr,Zr)合金的热变形行为[J].中国有色金属学报,2000,10(1):12-16LUO Feng-hua,YIN Zhi-min,ZUO Tie-yong.Hot deformation behavior of Cu Zn(Zr,Cr)alloys[J].The Chinese Journal of Nonferrous Metals Society,2000,10(1):12-16
• [2]冼爱平.大功率真空开关铜铬触头材料[J].中国有色金属学报,2001,11(5):731-740XIAN Ai-ping.Cu-Cr contact materials for high power vacuum interrupters[J].The Chinese Journal of Nonferrous Metals,2001,11(5):731-740.
• [3]杨涛林,陈跃.颗粒增强金属基复合材料的研究进展[J].铸造技术,2006,27(8):871-873YANG Tao-lin,CHEN Yue.Development in the research on particle-reinforced metal matrix composites[J].Foundry Technology,2006,27(8):871-87.
• [4]肖罡,李落星,叶拓.6013铝合金平面热压缩流变应力曲线修正与本构方程[J].中国有色金属学报,2014,24(5):1268-1274.XIAO Gang,LI Luo-xing,YE Tuo.Modification of flow stress curves and constitutive equations during hot plane compression deformation of 6013 aluminum alloy[J].The Chinese Journal of Nonferrous Metals,2014,24(5):1268-1274.
• [5]刘鹏飞,刘东,罗子健,等.GH761合金的热变形行为与动态再结晶模型[J].稀有金属与工程,2009,38(2):275-280.LIU Peng-fei,LIU Dong,LUO Zi-jian,et al.Low behavior and dynamic recrystallization model for GH761 superalloy during hot deformation[J].Rare Metal Materials and Engineering,2009,38(2):275-280.
• [6]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,2013,44(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,2013,44(14):2036-2046.
• [7]朱顺新.SPS制备Cu-Cr电接触复合材料的组织与性能[D].洛阳:河南科技大学,2017.
• [8]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.
• [9]冯江,田保红,张毅,等.WC含量对弥散铜-WC复合材料热变形行为的影响[J].材料热处理学报,2014,35(5):9-14.FENG Jiang,TIAN Bao-hong,ZHANG Yi,et al.Effect of WC content on hot deformation behavior of Al2O3/Cu-WC composites[J].Transactions of Materials and Heat Treatment,2014,35(5):9-14.
• [10]耿昊,朱顺新,刘勇.30%Cr-Cu复合材料热变形及动态再结晶临界条件[J].复合材料学报,2017,34(6):1308-1315.GENG Hao,ZHU Shun-xin,LIU Yong.Hot deformation and critical conditions of dynamic recrystallization of the 30%Cr-Cu composites[J].Transactions of Materials and Heat Treatment,2017,34(6):1308-1315.
• [11]朱顺新,刘勇,李国辉,等.放电等离子烧结制备Cu-10Cr复合材料热变形行为[J].材料热处理学报,2016,37(5):12-16.ZHU Shun-xin,LIU Yong,LI Guo-hui,et al.Hot deformation behavior of Cu-10Cr composite prepared by spark plasma sintering[J].Transactions of Materials and Heat Treatment,2016,37(5):12-16.
• [12]欧阳德来,鲁世强,黄旭,等.TA15钛合金β区变形动态再结晶的临界条件[J].中国有色金属学报,2010,20(8):1539-1544.OUYANG De-lai,LU Shi-qiang,HUANG Xu,et al.Critical conditions of dynamic recrystallization during deformation ofβarea in TA15 titanium alloy[J].The Chinese Journal of Nonferrous Metals,2010,20(8):1539-1544.
• [13]杨志强,刘勇,田保红,等.Ti C/Cu-Al2O3复合材料动态再结晶临界条件[J].复合材料学报,2014,31(4):963-969.YANG Zhi-qiang,LIU Yong,TIAN Bao-hong,et al.Critical conditions of dynamic recrystallization of Ti C/Cu-Al2O3composite[J].Acta Materiae Compositae Sinica,2014,31(4):963-969.
• [14]Cai Jun,Li Fu-guo,Liu Tai-ying,et al.Constitutive equations for elevated temperature flow stress of Ti-6Al-4V alloy considering the effect of strain[J].Materials and Design,2011,32(3):1144-1151.
• [15]李国辉,刘勇,国秀花,等.Ti B2/Cu复合材料的电弧侵蚀行为[J].复合材料学报,2018,35(3):616-622.LI Guo-hui,LIU Yong,GUO Xiu-hua,et al.Arc erosion behavior of Ti B2/Cu composites[J].Transactions of Materials and Heat Treatment,2018,35(3):616-622.
• [16]Jonas J J,Sellars C M,Tegant W J.Strength and structure under hot working conditions[J].Int.Metallurgical Reviews,1969,14(1):1-24.
• [17]LüB J,Peng J,Wang Y J,et al.Dynamic recrystallization behavior and hot workability of Mg-2.0Zn-0.3Zr-0.9Y alloy by using hot compression test[J].Materials and Design,2014,53:357-365.
• [18]蔡志伟.AZ41M镁合金热变形行为及动态再结晶研究[D].洛阳:河南科技大学,2016:35-48.
• [19]朱顺新,刘勇,李国辉,等.SPS法制备Cu-10Cr复合材料的电弧特性[J].材料热处理学报,2016,37(7):12-18.ZHU Shun-xin,LIU Yong,LI Guo-hui,et al.Arc erosion characteristics of Cu-10Cr composite prepared by spark plasma sintering[J].Transactions of Materials and Heat Treatment,2016,37(7):12-18.
• [20]Raghunath B K,Raghukandan K,Karthikeyan R,et al.Flow stress modeling of AZ91magnesium alloys at elevated temperature[J].Journal of Alloys and Compounds,2011,509(15):4992-4998.
• [21]张毅,刘平,田保红,等.Cu-Ni-Si-Ag合金动态再结晶数学模型[J].特种合金制造及有色合金,2010,30(9):787-790.ZHANG Yi,LIU Ping,TIAN Bao-hong,et al.Modeling of dynamic recrystallization in Cu-Ni-Si-Ag alloy[J].Special Casting and Nonferrous Alloys,2010,30(9):787-790.
• [22]孙亚丽,谢敬佩,郝世明,等.30%Si Cp/2024复合材料动态再结晶临界条件[J].材料热处理学报,2015,36(9):7-13.SUN Ya-li,XIE Jing-pei,HAO Shi-ming,et al.Critical conditions of dynamic recrystallization of 30%Si Cp/2024 composite[J].Transactions of Materials and Heat Treatment,2015,36(9):7-13.

文章评论(Comment)：