کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1581983 | 1514864 | 2008 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: High specific strength Mg-based bulk metallic glass matrix composite highly ductilized by Ti dispersoid High specific strength Mg-based bulk metallic glass matrix composite highly ductilized by Ti dispersoid](/preview/png/1581983.png)
Mg-based bulk metallic glass matrix composite with hcp-Ti powders was fabricated by casting the mixtures of Mg65Cu25Gd10 molten alloy and pure Ti powders into a copper mold. Ti powder was spherical and less than 150 μm in diameter, and its volume fraction was controlled from 5 to 40%. Thermal stability of the glassy matrix was maintanied even in the coexistence with the Ti powders. However, Ti dispersoid caused a significant improvement on compressive ductility from 0% plastic deformation for the monolithic glass to 41% plastic deformation for the composite with 40 vol.% Ti powders. This is the first success of synthesizing Mg-based alloys with high ultimate strength of ∼900 MPa level as well as the large plastic deformation of ∼40%, and suggests a novel guideline to develop Mg-based alloys having high specific strength with high ductility.
Journal: Materials Science and Engineering: A - Volume 494, Issues 1–2, 25 October 2008, Pages 299–303