Hot Oscillation Pressure Sintered and Post Heat Treated 90W-7NI-3FE Refractory Alloy

被引：1
作者：
Gao, Ka [1 ]
Zhao, Wei [2 ]
Li, Weidong [1 ]
Liu, Wei [3 ]
An, Linan [4 ]
机构：
[1] Univ Shanghai Sci & Technol, Sch Mech Engn, Shanghai 200093, Peoples R China
[2] Changhai Hosp, Dept Gen Med, Shanghai 200000, Peoples R China
[3] Minist Educ, Key Lab Adv Mat, Beijing 100084, Peoples R China
[4] Dongguan Univ Technol, Sch Mech Engn, Dongguan 523808, Guangdong, Peoples R China
来源：
JOM | 2023年 / 75卷 / 07期
基金：
中国国家自然科学基金;
关键词：
MECHANICAL-PROPERTIES; MICROSTRUCTURE EVOLUTION; TUNGSTEN CONTENT; DENSIFICATION; TEMPERATURE; BEHAVIOR;
D O I：
10.1007/s11837-023-05789-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The 90W-7Ni-3Fe refractory alloy was first sintered using hot oscillating pressure (HOP) and hot pressure, which were then heat treated in this work. The microstructure and hardness of the obtained samples were characterized to assess the effect of heat treatment on the diffusion behavior of HOP samples. The results found that HOP could significantly improve densification and inhibit the grain growth of the alloy to get a Vickers hardness of 450.08 HV0.5. The heat treatment could further promote the inter-diffusion between the W phase and Ni(Fe) binding phase, and the appearance of a large number of Ni(Fe) bonding phases reduced the weaker W-W interfaces in the HOP sample to improve its Vickers hardness of 467.84 HV0.5. HOP and post-heat treatment is an effective and promising technique for sintering high-performance refractory alloys.
引用
收藏
页码：2535 / 2542
页数：8
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