Effect of scandium on microstructure and mechanical properties of high zinc concentration aluminum alloys - 文章详情页

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摘要：

This　study　investigated　the　effect　of　Sc　addition　on　the　microstructure　and　mechanical　properties　of　a　high-Zn-concentration　Al　(Al-49Zn)　alloy.　The　addition　of　0.5Sc　obviously　refined　the　Al　grains　and　Zn　phases　in　the　Al-49Zn　alloy　during　solidification.　It　also　suppressed　the　Al　grain　coarsening　and　Zn　dissolution　in　the　Al-49Zn　alloy　during　heat　treatment　because　of　the　pinning　effect　of　nanoscale　Al3Sc　precipitates　and　Sc　atoms.　Given　its　refined　structure　and　high　thermal　stability,　the　Al-49Zn-0.5Sc　alloy　showed　high　hardness　and　mechanical　stability　after　heating.

关键词：

Al alloy Hardness Heat treatment Microstructure

作者机构：

[ 1 ] [Zhou, W. B.]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100022, Peoples R China
[ 2 ] [Zhou, W. B.]Alnan Aluminium Co Ltd, Nanning 530031, Peoples R China
[ 3 ] [Liu, C. Y.]Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
[ 4 ] [Ma, Z. Y.]Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
[ 5 ] [Liu, C. Y.]Guilin Univ Technol, Minist Educ, Key Lab New Proc Technol Nonferrous Met & Mat, Guilin 541004, Peoples R China
[ 6 ] [Luo, K.]Guilin Univ Technol, Minist Educ, Key Lab New Proc Technol Nonferrous Met & Mat, Guilin 541004, Peoples R China
[ 7 ] [Yu, P. F.]Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
[ 8 ] [Zhang, B.]Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
[ 9 ] [Ma, M. Z.]Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
[ 10 ] [Liu, R. P.]Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China

通讯作者信息：

[Liu, C. Y.]Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China;;[Luo, K.]Guilin Univ Technol, Minist Educ, Key Lab New Proc Technol Nonferrous Met & Mat, Guilin 541004, Peoples R China

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