Columnar-to-equiaxed transition and grain refinement by solute interaction effects

被引：9

作者：

Liu, X. W. ^{[1
]}

Yao, J. Q. ^{[1
]}

Ma, X. N. ^{[1
]}

Wang, Y. S. ^{[1
]}

Gao, N. ^{[1
]}

Shi, Y. ^{[1
]}

Fan, Z. T. ^{[1
]}

Du, H. ^{[2
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China

[2] Wuhan Univ Sci & Technol, Sch Machinery & Automat, Wuhan 430081, Peoples R China

来源：

MATERIALS CHARACTERIZATION | 2023年 / 205卷

基金：

中国国家自然科学基金;

关键词：

Columnar-to-equiaxed transition; Grain refinement; Cast microstructure; Constitutional supercooling; Solute interaction effect; MECHANICAL-PROPERTIES; NUCLEANT; ALUMINUM; ENTROPY; ALLOYS; GROWTH; MODEL;

D O I：

10.1016/j.matchar.2023.113288

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of single solute on grain refinement of binary alloys during casting have been revealed with supercooling parameter (P) and growth restriction factor (Q) theory in the literature. However, multiple-solute effects are still not clear due to the interaction between different solutes. In this work, we proposed a method to make remarkable grain refinement effects with minor Ti and C solutes. In addition, a novel method for columnar-toequiaxed transition and grain refinement was also put forward based on solute interaction effects between multiple solute elements. Two solutes were designed first by considering (a) both segregated in solid-liquid interfaces with partition coefficients <1 and (b) with properly strong interaction energy. The interaction effect between the solutes enhances build-ups ahead of the solid-liquid interface and generate stronger constitutional supercooling, which leads to significant grain refinement in the selected model metals of Ni and Fe.

引用

页数：7

共 14 条

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