MICROSTRUCTURE AND MECHANICAL PROPERTIES OF TiAl ALLOYS PRODUCED BY POWDER METALLURGY

扫码查看

原文链接

NETL

外文摘要：Ti-43Al-5V-4Nb alloy and Ti_2AlC/TiAl composite are prepared by different powder metallurgy process。 For the former， the process route consisted of rapid heating and forging。 The room temperature tensile properties of Ti-43Al-5V-4Nb alloy was investigated。 The yield strength and tensile strength is tested to be 376。75Mpa and 442。96Mpa。 The elongation is estimated to be 0。27%。 Ti_2AlC/TiAl composite were synthesized by mechanical milling and spark plasma sintering。 It was found that the microstructure of Ti_2AlC/TiAl composite synthesized at 950℃ consists of continuous three dimensional network of Ti_2AlC phase and equiaxed γ-TiAl grains。 The compressive strength of Ti_2AlC/TiAl composite is tested to be 2217Mpa， which is lower than that of Ti-49A1 based alloy (2405Mpa)。 The ductility of TiAl based composite can be improved by the addition of Carbon nanotubes。

外文关键词：

TiAl alloypowder metallurgyforgingmicrostructuremechanical properties

作者：

Fantao Kong、Ning Cui、Yuyong Chen、Deliang Zhang、Yongjun Su

展开 >

作者单位：

National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, 92 Xidazhi Street, Harbin, Heilongjiang province, 150001, P.R. China

School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P.R. China

National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, 92 Xidazhi Street, Harbin, Heilongjiang province, 150001, P.R. China,School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P.R. China

会议名称：

TMS annual meeting & exhibition;International symposium on gamma titanium aluminide alloys

会议地点：

San Diego, CA(US)

会议母体文献：

Gamma titanium aluminide alloys 2014

页码：

203-205

出版时间：

2014