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《Rare Metal Materials and Engineering》 2007-07
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Mechanical Alloying of Ti-Al-Si-Nb System Powders and the Microstructure Characteristics after Spark Plasma Sintering

Chen Hua (Changchun University of Technology, Chang’chun 130012, China)  
The mechanical alloying of TiH2-45Al-0.2Si-5Nb and TiH2-45Al-0.2Si-7Nb powders and their microstructure characteristics of sintered bodies by spark plasma sintering were investigated. The results showed that the particle sizes of the powders were reduced and the intermetallic compounds TiAl, Ti3Al, and Ti2Al were formed during milling. The particle size of mixture powder is the minimum of about 1 μm for the TiH2-45Al-0.2Si-7Nb after milling for 30 h. The sintering can be finished within very short time if adopting spark plasma sintering for the milled powder. The microstructure of the sintered bodies were composed of fine global phases of TiAl and Ti3Al, trending to be finer and finer with the increase of sinter time.
【Fund】: 吉林省科技发展计划项目资助(20050513)
【CateGory Index】: TF124.5
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【References】
Chinese Journal Full-text Database 1 Hits
1 Chen Hua,Zhao Zhankui(Key Laboratory of Advanced Structural Materials,Ministry of Education,Changchun University of Technology,Changchun 130012,China);Preparation of TiAl Based Alloy with Fine Grains and Its High Temperature Oxidation Behavior[J];Rare Metal Materials and Engineering;2011-02
【Co-references】
Chinese Journal Full-text Database 2 Hits
1 HE Wen xiong, LI Xiao qiang, HU Lian xi, WANG Er de(Institute of Material Science and Technology, Harbin Institute of Technology, Harbin 150001, China);Effect of mechanical milling on diffusive reaction of Ti-Al composite powders[J];Material Science and Technology;2000-04
2 Chen Linghui;He Yuehui;Huang Baiyun;Cao Peng;Qu Xuanhui;Zeng Yuxiao;The Effect of Microstructure on High-temperature Oxidation Resistance of TiAl Based Alloy[J];HOT WORKING TECHNOLOGY;1995-06
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