발간논문

Home > KJMM 논문 > 발간논문

Vol.35, No.12, 1653 ~ 1660, 1997
Title
Effects of Heat Treatment on the Mechanical Propertis in Squeeze Cast Mg-Li-Al Alloys
황영하 , 김영우 , 김도향 , 홍준표 Young Ha Hwang , Chang Haw Han , Young Wo Kim , Bum Jin Cho , Hyang Kim , Chun Pyo Hong
Abstract
Effects of heat treatment on the mechanical properties in squeeze cast Mg-10wt%Li-3wt%Al and Mg-10wt%Li-5wt% Al alloys have been ivestigated. The as-cast microstructure consists of a mixture of α, βand AlLi. The best combination of hardness and tensile strength were obtained after solution treatment at 350℃ for 1 hour for Mg-10wt%Li-3wt%Al and 370℃ for 1 hour for Mg-10wt%Li-5wt%Al, respectively. Various microstructural features such as the ratio of α/βvolume fraction, the orientation relationship between α and β grains and shape change of α phase were observed after heat treatment. Strengthening of the Mg-Li-Al alloys is due to the precipitation of AlLi in the β phase matrix, dissolving of Al into the matrix during heat treatment and reprecipitation of α platelets during cooling after heat treatment.
Key Words
| PDF
대한금속∙재료학회 │ (06633) 서울시 서초구 서초대로 56길 38 대한금속∙재료학회 회관 (서초1동 1666-12번지)
Tel : 070-4266-1646 │ FAX : 02-557-1080 │ E-mail : metal@kim.or.kr
Copyright ⓒ 2013 사단법인 대한금속∙재료학회 All rights reserved.