挤压角度对AgCuO复合材料组织演变的影响  

Effect of Extrusion Angle on Microstructure Evolution of AgCuO Composites

作　　者：李晓龙 郑忠 周晓龙[1,2] 陶麒鹦 张浩[1,2] LI Xiaolong 1,2 , ZHENG Zhong 3, ZHOU Xiaolong 1,2 , TAO Qiying 1,2 , ZHANG Hao 1,2(1 Department of Materials Science and Engineering, Kunming University of Science and Technology,Kunming 650093;2 Key Laboratory of Advanced Materials of Yunnan Province ＆ Key Laboratory of Advanced Materials of Non-Ferrous and Precious Rare Metals of Ministry of Education, Kunming 650093;3 School of Materials Science and Engineering,Harbin Institute of Technology, Harbin 15000)

机构地区：[1]昆明理工大学材料科学与工程学院,昆明650093 [2]云南省新材料制备与加工重点实验室&稀贵及有色先进材料教育部重点实验室,昆明650093 [3]哈尔滨工业大学材料学院,哈尔滨150000

出　　处：《材料导报》2018年第A01期543-546,共4页Materials Reports

基　　金：云南省科技计划重点项目(2017FA027);国家自然科学基金(51361016);云南省教育厅科学研究基金项目(2016YJS030)

摘　　要：研究了挤压角度对AgCuO复合材料组织变化的影响。通过试验结果与有限元模拟结果进行对比,进一步证实有限元模拟的真实性以及试验结果的准确性。结果表明:当两个立方CuO位置较近且周围没有单斜CuO时,立方CuO都从多边形变为直线形纤维;而当单斜与立方CuO位置较近时,立方CuO由多边形变为弯曲的纤维状,单斜CuO也发生了部分变形。此外,随着模具角度的增大,试样表面附近的CuO颗粒分散性逐渐增强,立方CuO纤维不断变细变长,而且立方CuO颗粒纤维化现象沿径向向内逐渐减少。试样所受应力不断增加,且最大应力出现在定径带入口附近;变形区作用范围不断减小,但应力却不断增加。In this paper,the effect of extrusion angle on the microstructure of AgCuO composites was studied.The results obtained from the experiments were compared with the simulation results,the authenticity of the finite element simulation and the accuracy of the experimental results were confirmed.Results showed that when the position of the two cubic CuO was near and there was no single CuO,the cubic CuO was deformed into a straight line from the polygon.When the position of the single and the cubic CuO was relatively close,the cubic CuO was deformed by the polygon as a curved fiber,and the single CuO was partially deformed.In addition,with the increase of die angle,the dispersion of CuO particles near the surface of the sample was gradually enhanced,and the cubic CuO fibers became finer and longer,and the phenomenon of CuO particles in the cubic gradually decreased along the radial direction.The stress of the sample was increasing,and the maximum stress appeared in the vicinity of the fixed diameter zone.The scope of deformation was decreased,but the stress was increasing.

关 键 词：AgCuO复合材料 反应合成法 热挤压 组织演变 

分 类 号：TG146.1[一般工业技术—材料科学与工程] TG146.3[金属学及工艺—金属材料]