大尺寸纯钨板轧制数值模拟  

Numerical simulation of pure tungsten plate rolling in large size

作　　者：王广达[1] 熊宁[1] 钟铭 刘国辉 WANG Guangda;XIONG Ning;ZHONG Ming;LIU Guohui(Advanced Technology&Materials Co.,Ltd,Beijing 100081,China;ATTL Advanced Materials Co.,Ltd.Tianjin 301899,China)

机构地区：[1]安泰科技股份有限公司,北京100081 [2]安泰天龙钨钼科技有限公司,天津301899

出　　处：《粉末冶金技术》2023年第4期315-321,共7页Powder Metallurgy Technology

基　　金：国家重点研发计划专项资助项目(2017YFB305600)。

摘　　要：钨是核聚变示范堆、散裂中子源及半导体领域中非常重要的一种难熔金属材料,通过对钨板进行轧制变形可以得到各项预期性能。本文通过DEFORM软件模拟大尺寸钨板坯料的轧制,分析轧制方式对损伤因子(损伤值)和应变的影响。结果发现,单向轧制的损伤严重区域主要分布在坯料侧面边缘处,易发生裂纹;交叉轧制对的损伤严重区域比较均匀地分布在坯料四周,由损伤累积产生韧性裂纹的倾向性小。交叉轧制板材在轧制方向的应变曲线在到达一次“最高值”后会下降到上一道次的横向应变,形成“最小值”,两次应变最大值的差值比单向轧制的小。Tungsten is a very important refractory metal in the fields of nuclear fusion demonstration reactor,spallation neutron source,and semiconductor.The expected properties of tungsten plates can be obtained by rolling and deforming.The DEFORM software was used to simulate the rolling of tungsten plates in large size in this paper,and the influence of rolling mode on damage factor(damage value)and strain was analyzed.The results show that,the serious damage area for one-way rolling is mainly distributed at the side edge of the billets,which is easy to produce cracks;the serious damage area for cross rolling is uniformly distributed around the billets.The strain curves of cross rolling in the rolling direction may reach a"maximum value"and then descend to a"minimum value",and the difference of strain between the two maximum value is smaller in cross rolling than that in one-way rolling.

关 键 词：钨板 轧制 数值模拟 大尺寸板坯 

分 类 号：TG142.71[一般工业技术—材料科学与工程]