97W-2Ni-1Fe高比重合金配重块力学性能离散性原因分析  

Analysis of the causes for the dispersion of mechanical properties of a tungsten alloy counterweight

作　　者：左伟 郭胤 杨林 张振 王新磊 孙晓霞[3] ZUO Wei;GUO Yin;YANG Lin;ZHANG Zhen;WANG Xinlei;SUN Xiaoxia(ATTL Advanced Materials Co.Ltd,Beijing 100094,China;Sichuan Academy of Aerospace Technology,Chengdu 610100,China;China University of Labor Relations,Beijing 100048,China)

机构地区：[1]安泰天龙钨钼科技有限公司,北京100094 [2]四川航天系统工程研究所,成都610100 [3]中国劳动关系学院,北京100048

出　　处：《粉末冶金工业》2021年第3期99-103,共5页Powder Metallurgy Industry

摘　　要：本文针对配重用97W-2Ni-1Fe钨合金材质产品复验过程中出现的取样品力学性能离散性大的情况,进行试验现象再现分析验证,为后续钨合金的失效分析及质量控制提供参考依据。结果表明:烧结温度不均是造成钨合金材料性能离散性的根本原因,由此导致组织内部钨颗粒异常长大,钨颗粒接触度增加,造成组织不均匀,材料抗拉强度下降。断口以钨-钨界面分离为主,是典型的脆性断裂。This paper takes 97 W-2 Ni-1 Fe tungsten alloy for counterweight as the research object. The phenomenon reappearance analysis and verification are carried out for the large dispersion of the mechanical properties of the body sampling during the product reinspection process, which provides a reference for subsequent failure analysis and quality control of tungsten alloy. The test results show that the sintering temperature is the fundamental reason that affects the discreteness of the properties of the tungsten alloy material. As a result, the tungsten particles inside the structure grow abnormally, the structure is uneven, the bonding layer becomes thicker, and the tensile strength of the material decreases. Fractures are dominated by tungsten-tungsten interface separation, which is a typical brittle fracture.

关 键 词：配重 钨合金 力学性能 

分 类 号：TG146.411[一般工业技术—材料科学与工程]