Heterogeneous nucleation of beta-type precipitates on nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy

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成果类型：

期刊论文

作者：

Zhu, Hongmei;Sha, Gang;Liu, Jiangwen;Liu, Hongwei;Wu, Cuilan*;...

通讯作者：

Wu, Cuilan

作者机构：

[Zhu, Hongmei; Luo, Chengping; Liu, Jiangwen] S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China.

[Wu, Cuilan] Hunan Univ, Sch Mat Sci & Engn, Ctr High Resolut Elect Microscopy, Changsha 410082, Hunan, Peoples R China.

[Zheng, Rongkun; Liu, Hongwei; Sha, Gang; Zhu, Hongmei; Liu, Zongwen; Ringer, Simon P.] Univ Sydney, Australian Ctr Microscopy & Microanal, Sydney, NSW 2006, Australia.

[Zhu, Hongmei] Univ S China, Sch Mech Engn, Hengyang 421001, Peoples R China.

通讯机构：

[Wu, Cuilan] H

Hunan Univ, Sch Mat Sci & Engn, Ctr High Resolut Elect Microscopy, Changsha 410082, Hunan, Peoples R China.

语种：

英文

关键词：

Mg alloys;Zn-rich precipitates;nanoscale Zr-rich particles;heterogeneous nucleation;electron microscopy

期刊：

Nanoscale Research Letters

ISSN：

1931-7573

年：

2012

卷：

期：

页码：

300

DOI：

10.1186/1556-276X-7-300

基金类别：

National Basic Research (973) Program of ChinaNational Basic Research Program of China [2009CB623704]; Nature Science Foundation of Guangdong ProvinceNational Natural Science Foundation of Guangdong Province [07006483]; Doctoral Scientific Research Foundation of the University of South China [2011XQD26]; China Scholarship CouncilChina Scholarship Council; Australian Research Council Centre of Excellence for Design in Light MetalsAustralian Research Council; Australian Research CouncilAustralian Research Council [DP0881700]

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本校为其他机构

院系归属：

机械工程学院

摘要：

Zirconium (Zr) is an important alloying element to Mg-Zn-based alloy system. In this paper, we report the formation of the β-type precipitates on the nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy during ageing at 180°C. Scanning transmission electron microscopy examinations revealed that the nanoscale Zr-rich [0001]α rods/laths are dominant in the Zr-rich core regions of the as-quenched sample after a solution treatment at 430°C. More significantly, these Zr-rich particles served as favourable sites for heterogeneous nucleation ...

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Heterogeneous nucleation of beta-type precipitates on nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy

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