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Mg-Cu-Zn-Y-Zr bulk metallic glassy composite with high strength and plasticity
  • ISSN号：1005-8850
  • 期刊名称：北京科技大学学报(英文版)
  • 时间：0
  • 页码：43-45
  • 语言：中文
  • 分类：TG139.8[金属学及工艺—合金;一般工业技术—材料科学与工程;金属学及工艺—金属学]
  • 相关基金：This work was financially supported by the National Natural Science Foundation of China (No. 50225103, 50471001 and 50631010).
  • 相关项目：块体金属玻璃形成过程中的微观结构演变与玻璃形成能力
作者： Pang, Shujie|Tian, Wei|Ma, Chaoli|Zhang, Tao|Men, Hua|
关键词： Mg-based, alloy, METALLIC, glass, matrix, COMPOSITE, acicular, CRYSTALLINE, phase, strength, PLASTICITY
中文摘要：

Mg65Cu20Zn5Y9Zr1 bulk metallic glass matrix composite with a diameter of 2 mm was produced by copper mold casting. Upon cooling the Mg65Cu20Zn5Y9Zr1 melt, Mg2Cu acicular crystalline phase precipitates uniformly with a size of about 20 μm long and 1 μm thick while the remaining melt undergoes glass transition. Room temperature compression tests revealed that the high fracture strength up to 830 MPa and the plastic strain of 2.4% before failure are obtained for the Mg-based bulk metallic glass matrix composite. The formation of the Mg2Cu phase was proposed to contribute to high strength and plastic deformation of the material.

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块体金属玻璃形成过程中的微观结构演变与玻璃形成能力
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