Pinning Effect of In-Situ TiCp and TiBw on the Grain Size and Room Temperature Strength of (TiC plus TiB)/Ti Composites

被引：0

作者：

Jia, Lei ^{[1
]}

Chen, Biao ^{[2
]}

Li, Shu-feng ^{[1
]}

Imai, Hisashi ^{[2
]}

Kondoh, Katsuyoshi ^{[2
]}

机构：

[1] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China

[2] Osaka Univ, Joining & Welding Res Inst, Suita, Osaka 5650871, Japan

来源：

KONA POWDER AND PARTICLE JOURNAL | 2015年 / 32期

关键词：

powder metallurgy; Ti matrix composites; mechanical properties; microstructure; in situ reaction; MATRIX COMPOSITES; MECHANICAL-PROPERTIES; TENSILE PROPERTIES; MICROSTRUCTURE; GROWTH;

D O I：

10.14356/kona.2015020

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

(TiCp + TiBw,)/Ti composite was firstly prepared by spark plasma sintering (SPS) and hot extrusion from Ti-B4C system. and then isothermally heat treated at 400-800 degrees C for 24 h to study the pinning effect of the in situ formed reinforcements. Microstructure and phase composition was investigated by SEM, XRD and TEM, variation of the grain size of Ti matrix was studied by EBSD analysis, and room temperature strength was also measured after different heat treatments. Results show that, comparing with pure Ti materials, both the grain size of Ti matrix and the room temperature strength of the composite almost keep stable after heat treatments, suggesting the pinning effect of in situ formed TiCp, and TiBw, is effective to suppress the growth of Ti matrix grains during heat treatments.

引用

页码：264 / 269

页数：6

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