논문 해외 국제전문학술지(SCI급) DEVELOPMENT OF HIGH STRENGTH Mg-Cu-Zn ULTRAFINE EUTECTIC COMPOSITES WITH ENHANCED PLASTICITY
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2009-06
- 저자명 KI AN SONGa and KI BUEM KIMa*, JIN MAN PARKb, JAE SEOL LEEc, JOON SIK PARKd,WON HEE LEEa and DO HYANG KIMb
- 학술지명 International Journal of Modern Physics B
- 발행처명 WORLD SCIENTIFIC
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 7
홈페이지
논문 초록 (Abstract)
Mg-Cu-Zn ultrafine eutectic composites with different length scale heterogeneity, consisting of micrometer size dendrites and/or ultrafine scale bimodal eutectics, exhibit high yield strength as well as good plasticity at room temperature compression. Among these alloys, micron-scale α-Mg dendrites reinforced ultrafine eutectic composites exhibit high yield strength of 310 ~ 420 MPa and large plasticity of 7 ~ 12%. Meanwhile, a Mg72Cu5Zn23 alloy comprising a bimodal eutectic structure without the micron-scale α-Mg dendrites shows the optimized mechanical properties the highest yield strength of 455 MPa combined with a considerable plastic strain of ~5%.