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http://dx.doi.org/10.4150/KPMI.2010.17.5.365

Effect of Sintering Temperature on Microstructure and Mechanical Properties for the Spark Plasma Sintered Titanium from CP-Ti Powders  

Cho, Kyeong-Sik (School of Advanced Materials & System Engineering, Kumoh National Institute of Technology)
Song, In-Beom (School of Advanced Materials & System Engineering, Kumoh National Institute of Technology)
Jang, Min-Hyeok (School of Advanced Materials & System Engineering, Kumoh National Institute of Technology)
Yoon, Ji-Hye (School of Advanced Materials & System Engineering, Kumoh National Institute of Technology)
Oh, Myung-Hoon (School of Advanced Materials & System Engineering, Kumoh National Institute of Technology)
Hong, Jae-Keun (Special Alloys Research Group, Korea Institute of Materials Science (KIMS))
Park, Nho-Kwang (Special Alloys Research Group, Korea Institute of Materials Science (KIMS))
Publication Information
Journal of Powder Materials / v.17, no.5, 2010 , pp. 365-372 More about this Journal
Abstract
The evolution of sinterability, microstructure and mechanical properties for the spark plasma sintered(SPS) Ti from commercial pure titanium(CP-Ti) was studied. The densification of titanium with 200 mesh and 400 mesh pass powder was achieved by SPS at $750{\sim}1100^{\circ}C$ under 10 MPa pressure and the flowing $H_2$+Ar mixed gas atmosphere. The microstructure of Ti sintered up to $800^{\circ}C$ consisted of equiaxed grains. In contrast, the growth of large elongated grains was shown in sintered bodies at $900^{\circ}C$ with the 400 mesh pass powder and the lamella grains microstructure had been developed by increasing sintering temperature. The Vickers hardness of 240~270 HV and biaxial strength of 320~340 MPa were found for the specimen prepared at $950^{\circ}C$.
Keywords
Commercial pure titanium; Spark plasma sintering; Densification; Microstructure;
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