四点弯曲法测量钨材料韧脆转变温度及其与其他测试方法的比较研究  

Measurement of Ductile-Brittle Transition Temperature of Tungsten Materials by Four-Point Bending Method and Its Comparison with Other Methods

作　　者：耿祥 罗广南[2] 王万景 李强[2] 王纪超 谢春意 黄伶明 陈镇 彭吴擎亮 Geng Xiang;Luo Guangnan;Wang Wanjing;Li Qiang;Wang Jichao;Xie Chunyi;Huang Lingming;Chen Zhen;Peng Wuqingliang(Institute of Physical Science and Information Technology,Anhui University,Hefei 230039,China;Institute of Plasma Physics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China)

机构地区：[1]安徽大学物质科学与信息技术研究院,安徽合肥230039 [2]中国科学院合肥物质科学研究院等离子体物理研究所,安徽合肥230031

出　　处：《稀有金属材料与工程》2021年第11期4089-4094,共6页Rare Metal Materials and Engineering

基　　金：国家重点研发磁约束核聚变能发展研究专项(2017YFE0300604)。

摘　　要：针对聚变装置中钨材料的性能评价问题,采用四点弯曲试验(4PBT)方法对钨材料的韧脆转变温度(DBTT)进行了测试和分析。首先,基于对四点弯曲过程的应变率和强度随温度变化的分析获得了商用轧制纯钨的DBTT。结果表明,用标准四点弯曲法测得的工业轧制纯钨的DBTT值在150℃以下,低于相同材料的拉伸试验和冲击试验的测量值。然后对比不同加载速率的4PBT和拉伸试验的结果,证实了不同的DBTT测试方法的加载速率依赖性。最后,对测试方法影响DBTT测量的原因进行了分析和讨论。For performance evaluation of tungsten materials in fusion device,four-point bending test(4PBT)was carried out to analyze the ductile-brittle transition temperature(DBTT)of tungsten material.DBTT of industrial rolling pure tungsten measured by standard four-point bending method is under 150℃,basing on analysis to the change of strain rate and strength with temperature.This result is lower than the measured values of the tensile test and impact test.Then the results of 4PBT with different loading rates and tensile test were compared to confirm the loading rate dependence of DBTTs obtained by different test methods.Finally,the reasons for the influence of test methods on DBTT measurement were analyzed and discussed.

关 键 词：钨材料 韧脆转变温度(DBTT) 四点弯曲试验(4PBT) 加载速率 

分 类 号：TG146.411[一般工业技术—材料科学与工程]