논문 해외 국제전문학술지(SCI급) Mg-al alloys manufactured by casting and hot working process
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2008-01
- 저자명 Jung, W,김정민공동(교신),Jun, J
- 학술지명 JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
- 발행처명 JOURNAL MATER SCI TECHNOL
- 발행국가 해외
- 논문언어 외국어
홈페이지논문 초록 (Abstract)
Abstract: Mechanical properties of Mg-Al based alloys at different fabrication state, namely as-cast, hot rolled, and annealed, were investigated to develop the alloys that are suitable for the casting/hot working process. Experimental results indicated that the castability such as hot cracking resistance tends to improve with increasing the aluminum content. However, the elongation at elevated temperatures was observed to decrease as the Al content increases, implying difficulties in hot forming. A small amount of Zr additions could significantly enhance the room temperature mechanical properties of hot-rolled Mg-6%Al-1%Zn alloy. The tendency of remarkable grain coarsening at high temperatures was effectively reduced by the Zr additions. TEM analyses suggested that very fine Al3Zr precipitates formed in the Zr-added alloy are responsible for the obtained results.