α+β 타이타늄 합금의 미세조직 제어에 따른 기계적 특성

황유진; 박양균; 김창림; 김진영; 이동근

추천

검색

자료유형: 학술저널

저자정보: 황유진 (순천대학교 신소재공학과) 박양균 (순천대학교 신소재공학과) 김창림 (순천대학교 신소재공학과) 김진영 ([주]알앤더블유) 이동근 (순천대학교 신소재공학과)

저널정보: 한국열처리공학회 열처리공학회지 열처리공학회지 제29권 제5호

발행연도: 2016.1

수록면: 220 - 226 (7page)

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

The mechanical properties of Ti-6Al-4V can be improved by microstructural control through the heat treatment in ${\alpha}+{\beta}$ region. The heat treatment was carried out with a variety of heat treatment temperatures and holding times to find the optimized heat treatment conditions and it was analyzed by linking the microstructural characteristics and mechanical properties. The part of ${\beta}$ phase with $10{\pm}2wt%$ vanadium was transformed into ${\alpha}^{{\prime}{\prime}}$ martensite phase after quenched, so the hardness and tensile properties were decreased below $900^{\circ}C$. The higher the heat treatment temperature is, the smaller is the vanadium-rich region, which leads to transformation into hcp ${\alpha}^{\prime}$ martensite above $900^{\circ}C$. The hardness and tensile properties were improved due to the hard ${\alpha}^{\prime}$ martensite. As the holding times were longer, the hardness and tensile properties decreased below $900^{\circ}C$ because of the softening effect by the grain growth. When varying the holding times above $900^{\circ}C$, the change of mechanical properties was slight because the softening effect of grain growth and the strengthening effect of ${\alpha}^{\prime}$ phase were counteractive. Therefore, the best conditions of heat treatment, which is in the range of $920{\sim}960^{\circ}C$, 40 min, WQ, can effectively improve the mechanical properties of Ti-6Al-4V.

#Ti-6Al-4V #Solution treatment #Holding time #Mechanical properties #${alpha}^{prime}$ martensite #${alpha}^{{prime}{prime}}$ martensite #${beta}$-stabilizer

참고문헌 (11)

참고문헌 신청

Matthew J. Donachie, Jr. / 2000 / Titanium A Technical Guide / ASM international :55

D. G. Lee / 2005 / Mater. Sci. Eng. A391:221

G. Lütjering / 1998 / Mat. Sci. A 243:32

이용태 / 2009 / 타이타늄 / S&M미디어㈜ :66

M. A. Imam / 1983 / Metall. Trans. A 14:233

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!