Effects of sintering temperature on W-Mo-Cu alloy prepared by large current electric field sintering

被引：2
|
作者：
Liu Yan-fang [1 ]
Feng Ke-qin [1 ]
Zhou Hong-ling [1 ]
Ke Si-xuan [1 ]
机构：
[1] Sichuan Univ, Sch Mech Engn, Chengdu 610065, Sichuan, Peoples R China
来源：
CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING | 2019年 / 47卷 / 11期
关键词：
electric flied; W-Mo-Cu alloy; sintering temperature; densification; performance;
D O I：
10.11868/j.issn.1001-4381.2018.001160
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The W-Mo-Cu alloy was rapidly prepared by a large current electric field sintering method at 875-1000 degrees C. Effect of sintering temperature on microstructure, hardness and electrical conductivity was investigated. Based on the dimensional change during alloy sintering, the sintering characteristic index was obtained by fitting calculation, and the main migration mechanism of W-Mo-Cu alloy during sintering was inferred. The results show that the pores of the W-Mo-Cu alloy decrease, the relative density, microhardness and electrical conductivity increase at the same time with the increase of sintering temperature at 875-975 degrees C. When the sintering temperature is between 875 degrees C and 925 degrees C, the densification of the alloy is mainly caused by plastic deformation instead of sintering; when the sintering temperature is higher than 925 degrees C, the order of the main migration mechanism experienced during the densification of W-Mo-Cu alloy is plastic flow, volume diffusion, grain boundary diffusion and surface diffusion.
引用
收藏
页码：135 / 140
页数：6
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