H62黄铜热变形微观组织演化规律研究  

Analysis of microstructure evolution with hot deformation for H62 brass

作　　者：柴蓉霞[1] 冯斌[1] 郭卫[1] 张传伟[1] 郭成[2] CHAI Hong-xia1, FENG Bin1 , GUO Wei1, ZHANG Chuan-wei1, GUO Cheng2(1. College of Mechanical Engineering, Xi＇an University of Science and Technology, Xi＇an 710054, China; 2. School of Mechanical Engineering, Xi＇an Jiaotong University, Xi＇an 710049, China)

机构地区：[1]西安科技大学机械工程学院,陕西西安710054 [2]西安交通大学机械工程学院,陕西西安710049

出　　处：《塑性工程学报》2018年第5期263-269,共7页Journal of Plasticity Engineering

基　　金：陕西省教育厅专项科学研究计划项目(17JK0509);陕西省自然科学基础研究计划项目(2017JM542)

摘　　要：运用等温热压缩试验、微观组织观测、理论分析以及数值模拟的方法,研究了H62黄铜在温度范围为650～800℃、应变速率为0. 01、0. 1、1和10 s^（-1）的情况下的热变形行为和微观组织中α相的晶粒尺寸的演变规律。建立了材料的微观组织演变模型,并进行了验证。结果表明：α相微观组织演化模型计算结果与试验结果进行比较,平均误差均在10%以内,最大误差在15%以内。模拟实验的结果与热压缩的应力-应变曲线转变规律和微观组织演化规律能够很好的吻合,可较好的描述材料微观组织演化过程。The methods of isothermal compression test,metallographic observation,theoretical analysis and numerical simulation were utilized to study the hot deformation behavior and grain size evolution law of α phase in microstructure of H62 brass in temperature range of 650-800 ℃,strain rate of 0. 01,0. 1,1 and 10 s-1. The model of microstructure evolution of H62 brass was obtained,and the results were verified. The results show that the average errors between the α phase microstructure evolution model calculation results and the experimental results are all within 10%,the maximum error is within 15%. Besides,the simulation and experiment results are perfectly consistent with the law of stress-strain curve change and the microstructure evolution,which means the microstructure evolution process of the material is clearly described.

关 键 词：H62黄铜 热变形 微观组织模型 等温热压缩 

分 类 号：TG376.2[金属学及工艺—金属压力加工]