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Advanced Powder Processing Techniques of Ti Alloy Powders for Medical and Aerospace Applications
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  • Advanced Powder Processing Techniques of Ti Alloy Powders for Medical and Aerospace Applications
  • Advanced Powder Processing Techniques of Ti Alloy Powders for Medical and Aerospace Applications
저자명
Miura. Hideshi
간행물명
한국분말야금학회지
권/호정보
2013년|20권 5호|pp.323-331 (9 pages)
발행정보
한국분말야금학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

In this paper, two kinds of advanced powder processing techniques Metal Injection Molding (MIM) and Direct Laser Forming (DLF) are introduced to fabricate complex shaped Ti alloy parts which are widely used for medical and aerospace applications. The MIM process is used to strengthen Ti-6Al-4V alloy compacts by addition of fine Mo, Fe or Cr powders. Enhanced tensile strength of 1030 MPa with 15.1% elongation was obtained by an addition of 4 mass%Cr because of the microstructural modification and also the solution strengthening in beta phase. However, their fatigue strength was lower compared to wrought materials, but was improved by HIP. Subsequently, the effect of feeding layer height (FLH) on the characteristics of the DLF compacts was investigated. In the case of 100 ${mu}m$ FLH, surface roughness was improved and nearly full density (99.8%) was obtained. Also, tensile strength of 1080 MPa was obtained, which is higher than the ASTM value.