Microstructure evolutions of the Al-Mg and Al-Mg-Sc-Zr alloys during gradient cooling

被引：0

作者：

Fan, Zhenglin ^{[1
,2
]}

Zhong, Shibiao ^{[1
]}

Zeng, Li ^{[1
]}

Ye, Jieyun ^{[1
]}

Ren, Jieke ^{[3
]}

Chen, Jiqiang ^{[1
]}

机构：

[1] Jiangxi Univ Sci & Technol, Fac Mat Met & Chem, Ganzhou 341000, Peoples R China

[2] Jiangxi Univ Sci & Technol, Rare Earth Coll, Ganzhou, Peoples R China

[3] Zijin Min Grp Co Ltd, State Key Lab Comprehens Utilizat Low Grade Refrac, Xiamen, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2024年 / 40卷 / 15期

基金：

中国博士后科学基金;

关键词：

Al alloy; cooling rate; grain size; columnar-to-equiaxed transition; second phase; RAPID SOLIDIFICATION; EQUIAXED TRANSITION; GRAIN-REFINEMENT; ALUMINUM-ALLOYS; PARTICLES; PHASE; WELDABILITY; MORPHOLOGY; SCANDIUM; BEHAVIOR;

D O I：

10.1177/02670836241239784

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, the microstructure evolution of the Al-Mg and Al-Mg-Sc-Zr alloys during gradient cooling is studied and compared, the effect of the additions of Sc and Zr is also evaluated. The results show that the solidified microstructure of the Al-Mg-Sc-Zr alloy underwent more significant evolution than that of the Al-Mg alloy at gradient cooling rates (6 similar to 438 K/s), and formed two fine grain areas at the cooling rates of around 230 and 6 K/s, respectively. A typical columnar-to-equiaxed grain transition behaviour was discovered at the cooling rate of 300 K/s in Al-Mg-Sc-Zr alloy. The solidified microstructure of the alloys was affected by the coordination effect of the cooling rate and the second phases.

引用

页码：1106 / 1113

页数：8

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