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摘要:
The microstructure and tensile properties of the as-cast and as-rolled Mg-4.5Sn-5Zn alloys by adding various Sc content were investigated.Improvement of the tensile properties in as-cast Sc-containing alloys is attributed to the grain refinement and modification of secondary phase morphology.Three types of precipitates,namely spherical Mg2Sn,rod-like MgZn and Sc-rich phases were dispersed in the matrix of the Sc added M g-4.5Sn-5Zn alloys after hot rolling deformation.In addition,weakening and deflecting of the basal texture in as-rolled alloys were found and were attributed to Sc addition.Further increasing the Sc addition rate to 0.4 wt.%,however,resulted in the clustering of the Sc-rich phases and was found to reduce the tensile properties of the alloy,especially the elongation.The as-rolled Mg-4.5Sn-5Zn-0.3Sc alloy exhibits an optimum combination of tensile properties.The ultimate tensile strength,yield strength and elongation are 293.0MPa,164.2Mpa and 21.5%,respectively,and the elongation is about 68%higher than that of Sc-free alloy.
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篇名 The influence of Sc addition on microstructure and tensile mechanical properties of Mg-4.5Sn-5Zn alloys
来源期刊 镁合金学报(英文) 学科 工学
关键词 Magnesium alloys SCANDIUM MICROSTRUCTURE Mechanical properties
年,卷(期) 2019,(3) 所属期刊栏目
研究方向 页码范围 456-465
页数 10页 分类号 TG1
字数 语种
DOI
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Magnesium
alloys
SCANDIUM
MICROSTRUCTURE
Mechanical
properties
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相关学者/机构
期刊影响力
镁合金学报(英文)
季刊
2213-9567
50-1220/TF
174 Shazheng Str., C
出版文献量(篇)
153
总下载数(次)
1
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0
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