Glass forming ability and reliability in fracture stress for Mg-Cu-Ni-Nd-Y bulk metallic glasses

被引：21

作者：

Li, Q. F. ^{[1
]}

Qiu, K. Q. ^{[1
,2
]}

Yang, X. ^{[1
]}

Ren, Y. L. ^{[1
]}

Yuan, X. G. ^{[1
]}

Zhang, T. ^{[2
]}

机构：

[1] Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110023, Peoples R China

[2] Beijing Univ Aeronaut & Astronaut, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 491卷 / 1-2期

关键词：

Mg-Cu-Ni-Nd-Y alloys; glass forming ability; flaw sensitivity;

D O I：

10.1016/j.msea.2008.04.036

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The glass forming ability (GFA), thermal stability and mechanical properties of Mg-Cu-Ni-Nd-Y alloy were investigated by using copper mold casting, differential scanning calorimeter (DSC) and compression tester. The results show that both the GFA and thermal stability for Mg58.5Cu30.5Y11 alloy are improved when partial Cu and Y are substituted by Ni and Nd, respectively. A full amorphous rod of 13 mm in diameter was obtained for Mg58.5Cu27.5Ni3Nd5Y6, alloy, which has a large-supercooled liquid region, and a narrow melting temperature interval compared with Mg58.5Cu30.5Y11 alloy. The GFA was discussed in term of experiential parameters. We suggest using the relative difference between calculated and experimental fracture stress to estimate the reliability of experimental stress, which is correlated well with our results. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：420 / 424

页数：5

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