Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Effect of Sintering Temperature on Microstructure and Mechanical Properties for the Spark Plasma Sintered Titanium from CP-Ti Powders

CP-Ti 분말로부터 스파크 플라즈마 소결한 타이타늄의 미세구조와 기계적 성질에 미치는 소결 온도의 영향

  • 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))
  • 조경식 (금오공과대학교 신소재시스템공학부) ;
  • 송인범 (금오공과대학교 신소재시스템공학부) ;
  • 장민혁 (금오공과대학교 신소재시스템공학부) ;
  • 윤지혜 (금오공과대학교 신소재시스템공학부) ;
  • 오명훈 (금오공과대학교 신소재시스템공학부) ;
  • 홍재근 (한국기계연구원 재료연구소 특수합금연구그룹) ;
  • 박노광 (한국기계연구원 재료연구소 특수합금연구그룹)
  • Received : 2010.06.23
  • Accepted : 2010.09.03
  • Published : 2010.10.28
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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 $950^{\circ}C$.

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