Formation Mechanism of Layered Structure Near Fusion Boundary in Dissimilar-Filler Welding of Aluminum Alloys

被引：4

作者：

Dong, Qipeng ^{[1
]}

Chen, Xiaming ^{[1
]}

Nagaumi, Hiromi ^{[1
]}

Zhang, Qingyu ^{[1
]}

Wang, Xiaonan ^{[1
]}

Sheng, Minqi ^{[1
]}

Zhang, Bo ^{[2
]}

Li, Xinzhong ^{[1
]}

机构：

[1] Soochow Univ, High Performance Met Struct Mat Res Inst, Shagang Sch Iron & Steel, Suzhou 215021, Peoples R China

[2] Shandong Weiqao Pioneering Grp Co Ltd, Binzhou 256200, Peoples R China

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2021年 / 52卷 / 04期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Solidification - Microstructure - Welding - Aluminum alloys;

D O I：

10.1007/s11661-021-06146-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study presents the formation mechanism of a layered structure consisting of coherent cellular and columnar solidification microstructure accompanied with the macrosegregation in aluminum dissimilar-filler welding. The filler-depleted zone resulted from the incomplete mixing of the solute; moreover, it solidifies before the surrounding mixed zone, wherein the subsequent dendritic growth is hindered by the pre-solidified microstructure. This solidification sequence leads to a layered solidification microstructure and segregation patterns.

引用

页码：1174 / 1179

页数：6

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