Neutron Diffraction and Neutron Radiography Investigation into Powder Sintering of Ti/Al and TiH2/Al Compacts

被引：0
作者：
Gang Chen
Klaus-Dieter Liss
Peng Cao
Xin Lu
Xuanhui Qu
机构：
[1] University of Science and Technology Beijing,Institute for Advanced Materials and Technology
[2] The University of Auckland,Department of Chemical and Materials Engineering
[3] Guangdong Technion Israel Institute of Technology,Material Science and Engineering Program
[4] Northwest Institute for Non-ferrous Metal Research,State Key Laboratory of Porous Metal Materials
[5] Technion – Israel Institute of Technology,undefined
来源：
Metallurgical and Materials Transactions B | 2019年 / 50卷
关键词：
Powder Sintering; Sintering Behavior; Compaction Pressure; Australian Nuclear Science And Technology Organisation (ANSTO); TiH2 Powder;
D O I：
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学科分类号：
摘要：
Sintering behaviors of two types of powder compact, i.e., Ti/Al and TiH2/Al, under vacuum were studied using in situ neutron diffraction, in situ thermal dilatometric measurement, and ex situ neutron radiography. Their densification, microstructure, hydrogen concentration, and phase transformation features were compared. The results indicate that the predominant phase identified in the samples sintered from both compacts is γ-TiAl phase with minor Ti3Al phase. Dehydrogenation of TiH2 plays a decisive role in the sintering behavior and the resultant microstructure. In comparison with the Ti/Al compact, dehydrogenation occurring in the TiH2/Al compact leads to a higher level of densification and faster sintering kinetics.
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页码：429 / 437
页数：8
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