Densification behavior of mechanically alloyed NiAl powder compact during spark-plasma sintering and its mechanical property

被引：0

作者：

Kim, JS ^{[1
]}

Jung, SH ^{[1
]}

Jang, YI ^{[1
]}

Kwon, YS ^{[1
]}

机构：

[1] Univ Ulsan, Sch Mat Sci & Engn, Ulsan 680749, South Korea

来源：

KORUS 2003: 7TH KOREA-RUSSIA INTERNATIONAL SYMPOSIUM ON SCIENCE AND TECHNOLOGY, VOL 1 PROCEEDINGS: MACHINE PARTS AND MATERIALS PROCESSING | 2003年

关键词：

NiAl; spark-plasma sintering; mechanical alloying; Vicker's hardness; transverse-rupture strength; 4-point bending strength; fracture toughness; elastic modulus;

D O I：

暂无

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Mechanically-alloyed NiAl powder was sintered by Spark-Plasma Sintering(SPS) process. Densification behaviour and mechanical property were determined from the experimental results and analysis such as changes in linear shrinkage, shrinkage rate, microstructure, and phase during sintering process, Vicker's hardness, and transverse-rupture-strength(TRS). Above 97% relative density was obtained after sintering at 1150degreesC for 5min. Crystallite size determined by the Scherrer method was approximately 80 nm. From the X-ray diffraction analysis it was confirmed that the sintered bodies were composed mainly of NiAl phase together with Ni3Al phase. Measured Vicker's hardness and TRS value were 555 10 H-v and 1393+/-75 MPa, respectively.

引用

页码：51 / 55

页数：5

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