Study on the process characteristics of vacuum hot pressing sintering of TiNiNb alloy based on "near net shape forming"

被引：5

作者：

Liu Junwei ^{[1
]}

Li Yong ^{[1
]}

Lu Shiqiang ^{[1
]}

Wan Jun ^{[1
]}

Gao Wenliang ^{[1
]}

机构：

[1] Nanchang Hangkong Univ, Key Lab M Crostruct Control Metall Mat Jiangxi Pr, Nanchang 330063, Jiangxi, Peoples R China

来源：

MATERIALS LETTERS | 2021年 / 294卷

关键词：

TiNiNb alloy; Vacuum hot pressing sintering; Relative density; Microstructure; MECHANICAL-PROPERTIES; MICROSTRUCTURE; NB; TI;

D O I：

10.1016/j.matlet.2021.129758

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The TiNiNb pre-alloyed powder prepared after mechanical alloying was used as experimental material, and TiNiNb alloy was prepared by vacuum hot pressing sintering method (temperature 900 degrees C, pressure 35 MPa, vacuum degree 1.6 x 10(-3) Pa). The relative density and microstructure evoultion were analyzed by a serial of testing methods, such as: XRD and SEM etc. The results showed that the TiNiNb pre-alloyed powder presented amorphous state, the relative density of TiNiNb alloy after vacuum hot pressing sintering was 98.8%, and the alloy was completely crystallized. The microstructure of vacuum hot-pressed TiNiNb alloy is uniform, mainly composed of Ti-Ni matrix phase, beta-Nb phase, (Ti,Nb)(2)Ni hard phase and a small amount of TiC impurity phase. (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：3

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