Phase-Field Study of the Competitive Growth Mechanism of Dendrites in the Directed Energy Deposition Melt Pool of RCF103 Alloy

被引：0

作者：

Song, Boxue ^{[1
]}

Jiang, Xingyu ^{[2
]}

Wang, Zisheng ^{[2
]}

机构：

[1] Putian Univ, 1133 Xueyuan Rd, Putian, Fujian, Peoples R China

[2] Shenyang Univ Technol, Shenyang, Peoples R China

来源：

TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2024年 / 77卷 / 11期

关键词：

Directed energy deposition; Molten pool; Dendrites; Solidification; Competitive growth; POWDER BED FUSION; MICROSTRUCTURE EVOLUTION; MODEL; SOLIDIFICATION; SIMULATION; DYNAMICS;

D O I：

10.1007/s12666-024-03411-y

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In DED melt pools, high solidification rates and temperature gradients complicate characterizing competitive dendrite growth. To address this, the WBM phase-field method simulates dendrite growth in the RCF103 alloy, revealing correlations between tilted dendrites and solidification parameters. It explores the competitive mechanism between different dendrite morphologies (columnar and seaweed) and the role of surface energy anisotropy and tip undercooling in determining dendrite shape. These findings enhance our understanding of DED melt pool dendrite growth, facilitating the establishment of a relationship between solidification structure, conditions, and process parameters.

引用

页码：3465 / 3474

页数：10

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