Microstructures and properties of 90W-4Ni-6Mn alloy prepared by vacuum sintering

被引：6
|
作者：
Duan, Bohua [1 ,2 ]
Zhou, Tao [1 ]
Yang, Guo [1 ]
Yang, Donglin [1 ]
Wang, Dezhi [1 ,2 ]
机构：
[1] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
[2] Cent South Univ, Key Lab Nonferrous Met Mat Sci & Engn, Minist Educ, Changsha 410083, Peoples R China
来源：
MATERIALS RESEARCH EXPRESS | 2020年 / 7卷 / 03期
基金：
国家重点研发计划;
关键词：
W-Ni-Mnalloy; vacuum sintering; microstructure; mechanical properties; MECHANICAL-PROPERTIES;
D O I：
10.1088/2053-1591/ab7d5b
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Tungsten-nickel-manganese alloy is an excellent potential replacement of depleted uranium alloy for kinetic energy penetrator (KEP) due to its high self-sharpening effect. In this work, the 90W-4Ni-6Mn alloy was prepared by vacuum sintering, and the effects of the sintering temperature and oxygen content on its microstructure and properties were discussed. Sintering temperature had a great influence on the properties of tungsten heavy alloy. The optimal properties of 90W-4Ni-6Mn with the relative density of 99.43%, the W grain size of 3.80 mu m, and the compressive strength of 2790 MPa were obtained at the sintering temperature of 1125 degrees C for 60 min under a vacuum of 10(-2)similar to 10(-3) Pa. With the increase of oxygen content, the densification of powders became more difficult, and the microstructure homogeneity and mechanical properties of sintered samples decreased accordingly. The results provide a new effective way to prepareW-Ni-Mnalloy with high performance.
引用
收藏
页数：10
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