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Korean Journal of Metals and Materials > Volume 54(12); 2016 > Article
Korean Journal of Metals and Materials 2016;54(12): 925-930. doi: https://doi.org/10.3365/KJMM.2016.54.12.925
Ti-39Nb-6Zr 합금의 시효처리를 통한 미세조직 및 기계적 특성 제어
권현준1,3, 임가람1, 이용태1, 이동근2, 이준희3, 김승언1
1한국기계연구원 부설 재료연구소 금속재료연구본부
2순천대학교 신소재공학부
3동아대학교 신소재공학과
Effect of Aging Time and Temperature on Microstructure and Mechanical Properties of Ti-39Nb-6Zr Alloy
Hyun Jun Kwon1,3, Ka Ram Lim1, Yong Tae Lee1, Dong Geun Lee2, Jun Hee Lee3, Seung Eon Kim1
1Metallic Materials Division, Korea Institute of Materials Science, Changwon 51508, Republic of Korea
2Department of Materials Science and Engineering, Sunchon National University, Sunchon 57922, Republic of Korea
3Department of Materials Science and Engineering, Dong-A University, Busan 49315, Republic of Korea
Correspondence  Seung Eon Kim ,Tel: +82-55-280-3326, Email: sek24@kims.re.kr
Received: 6 November 2015;  Accepted: 19 May 2016.  Published online: 5 December 2016.
ABSTRACT
The aim of this study is to optimize the microstructure and mechanical properties of Ti-39Nb-6Zr (TNZ40) for bio-implant applications. TNZ40 was designed to have a low elastic modulus (~40 GPa) and good biocompatibility. However, the alloy shows relatively low strength compared to other titanium alloys for bio-implant. In the present study, we tried to obtain the proper combination of elastic modulus and strength by tailoring the direct aging conditions after severe plastic deformation. The mechanical properties are closely linked to characteristics including the distribution and volume fraction of precipitates.
Keywords: implant, titanium alloy, low elastic modulus, direct aging, microstructure, mechanical properties
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