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性别: 男

毕业院校: 大连理工大学

学位: 博士

所在单位: 材料科学与工程学院

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Significant texture weakening of Mg-8Gd-5Y-2Zn alloy by Al addition

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论文类型: 期刊论文

发表时间: 2017-07-31

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

收录刊物: SCIE、EI、Scopus

卷号: 701

页面范围: 314-318

ISSN号: 0921-5093

关键字: Mg-Zn-RE magnesium alloys; Rolling; Microstructure; Texture

摘要: In present paper, Al element was introduced to weaken the basal texture of Mg-8Gd-5Y-2Zn alloy. Due to the addition of Al, the precipitation of Mg12Zn(Y, Gd) is significantly depressed, while the precipitation of Mg3Zn3(Y, Gd)(2), Al-11(Y, Gd)(3,) and Al-2(Y, Gd) is enhanced. The Al-11(Y, Gd)(3) and Al-2(Y, Gd), which are located in grain interior, stimulate the dynamic recrystallization due to the particle-stimulated nucleation (PSN) effect in cross rolling process. This results in a multi-peak characteristic with wider orientation distribution of basal poles. Furthermore, the maximum pole intensity of the as-rolled Mg-8Gd-5Y-2Zn-1A1 alloy was significantly weakened.

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