기계적 분쇄화 및 스파크 플라즈마 소결에 의한 TiAl 합금의 제조

김민수; 김준식; 황승준; 홍영환; 오명훈

추천

검색

자료유형: 학술저널

저자정보: 김민수 (금오공과대학교 재료공학과) 김준식 (금오공과대학교 재료공학과) 황승준 (대진대학교 재료공학과) 홍영환 (수원과학대학 신소재응용과) 오명훈 (금오공과대학교 재료공학과)

저널정보: 한국열처리공학회 열처리공학회지 열처리공학회지 제17권 제1호

발행연도: 2004.1

수록면: 17 - 22 (6page)

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

In the present study, newly developed spark plasma sintering(SPS) technique was introduced to refine the grain size of ${\gamma}$-based TiAl intermetallic compounds. Ti-46Al-1.5Mo and Ti-46Al-1.5Mo-0.2C(at%) prealloyed powders were produced by mechanical milling(MM) in high-energy attritor. The mechanically milled powders were characterized by XRD and SEM for the microstructural evolution as a function of milling time. And then, the MMed powders were sintered by both spark plasma sintering and hot pressing in vacuum (HP). After the sintering process, MM-SPSed specimens were heat-treated in a vacuum furnace (SPS-VHT) and in the SPS equipment(MM-SPS) for microstructural control. It was found from microstrutural observation that the microstructure consisting of equiaxed ${\gamma}$-TiAl with a few hundred nanometer in average size and ${\alpha}_2-Ti_3Al$ particles were formed after both sintering processes. It was also revealed from hardness test and three-point bending test that the effect of grain refinement on the hardness and bending strength is much higher than that of carbon addition. The fully lamellar microstructures, which is less than $80{\mu}m$ in average grain size was obtained by SPS-VHT process, and the fully lamellar microstructure which is less than $100{\mu}m$ in average grain size was obtained by MM-SPS for a relatively shorter heat-treatment time.

#Intermetallic compound #${gamma}$-TiAl #Fully lamellar microstructure #Mechanical milling #MM) #Spark plasma sintering #SPS)

참고문헌 (0)

참고문헌 신청

참고문헌이 DBpia에서 서비스 중이라면, [참고문헌 신청]을 통해 등록해보세요

함께 읽어보면 좋을 논문

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