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论文类型： 期刊论文

发表时间： 2016-03-21

发表刊物： MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

收录刊物： SCIE、EI

卷号： 658

页面范围： 376-380

ISSN号： 0921-5093

关键字： Mg-6Zn/TiB2p composite; Yttrium; Microstructure; Texture; Mechanical properties

摘要： For the application of the Al-Ti-B system in Al-free Mg alloys, yttrium was selected and its effect on microstructure, texture and mechanical properties of Mg-6Zn/TiB2p composite was studied. The results indicate that the addition of Y could transform the extra Al (which is the by-product of the Al-Ti-B SHS reaction) into Al2Y and Al11Y3 phases, and then refined the as-homogenized microstructure of the Mg-6Zn/TiB2p composite. The Al2Y and Al11Y3 particles, as well as the TiB2 particles, effectively stimulate the occurrence of dynamic recrystallization during the cross-rolling, which contribute to the grain refinement and the formation of a weak double peak texture. That results in the comprehensive improvement of the mechanical properties. (C) 2016 Elsevier B.V. All rights reserved.