Heterogeneous nucleation of β-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：

Alloying elements;Copper alloys;Electron microscopy;High resolution transmission electron microscopy;Magnesium alloys;Nanotechnology;Nucleation;Scanning electron microscopy;Zinc alloys;Heterogeneous nucleation;Isothermal ageing;Mg alloy;Nano scale;Scanning transmission electron microscopy;Solution treatments;Strengthening effect;Zn-based alloys;Zircaloy

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：

This project was supported by the National Basic Research (973) Program of China (no. 2009CB623704), Nature Science Foundation of Guangdong Province (no. 07006483), the Doctoral Scientific Research Foundation of the University of South China (no. 2011XQD26), China Scholarship Council and the Australian Research Council Centre of Excellence for Design in Light Metals. ZL acknowledges the funding support by the Australian Research Council (DP0881700). The authors also acknowledge the facilities and scientific and technical assistance from AMMRF at the University of Sydney, particularly, Dr. Dave Mitchell and Dr. Ting-Yu Wang.

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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 β-type precipitates on nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy

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