Strengthening and Room Temperature Age-Softening of Super-Light Mg-Li Alloys

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题名:	Strengthening and Room Temperature Age-Softening of Super-Light Mg-Li Alloys
作者:	Leu,JS;Chiang,CT;Lee,S;Chen,YH;Chu,CL
贡献者:	機械工程學系
关键词:	MECHANICAL-PROPERTIES;MICROSTRUCTURES
日期:	2010
上传时间:	2012-03-27 17:04:56 (UTC+8)
出版者:	國立中央大學
摘要:	Extremely light (density similar to 1.46 g/cm(3)) and highly formable Mg-Li alloys have been drawing research interest; however, their relatively low strength is discouraging, and thus, an issue to be addressed. This paper processes and evaluates four Mg-Li alloys: the first, a basic alloy with a nominal composition of Mg-11%Li-1%Al-0.5%Zn; the second, an alloy with only Be added to the first; the third, an alloy with only Sc added to the first; and the fourth, with both Be and Sc added to the first. This research achieves a high strength of similar to 240 MPa for Mg-Li alloys using the processes of solid solution treatment plus 90% heavy rolling. A subsequent natural aging process proceeded spontaneously and resulted in strength decay. Room temperature softening behavior is uncommon, but offers a convenient route for studying age-softening characteristics of metallic alloys.
關聯:	JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
显示于类别:	[機械工程學系] 期刊論文

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