Liquid state dependent solidification of a Co-B eutectic alloy under a high magnetic field

被引：3

作者：

Yixuan He ^{[1
,2
,3
]}

Fan Bu ^{[1
,2
]}

Yuhao Wu ^{[1
,2
]}

Jianbao Zhang ^{[1
,2
]}

Dawei Luo ^{[1
,2
]}

Zhangchi Bian ^{[1
]}

Qing Zhou ^{[1
,2
]}

Tie Liu ^{[4
]}

Qiang Wang ^{[4
]}

Jun Wang ^{[1
]}

Haifeng Wang ^{[1
,2
]}

Jinshan Li ^{[1
]}

Eric Beaugnon ^{[5
]}

机构：

[1] State Key Laboratory of Solidification Processing, Northwestern Polytechnical University

[2] Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University

[3] Collaborative Innovation Center of NPU

[4] Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University

[5] Univ. Grenoble Alpes, INSA Toulouse, Univ.Toulouse Paul Sabatier, EMFL,CNRS, LNCMI

来源：

JournalofMaterialsScience&Technology | 2022年 / 116卷 / 21期

基金：

中央高校基本科研业务费专项资金资助;

关键词：

D O I：

暂无

中图分类号：

TG111.4 [金属的液体结构和凝固理论];

学科分类号：

0702 ; 070205 ;

摘要：

The structure transition inside the Co-81.5at.%B alloy liquid has been studied by an in-situ magnetization measurement. A crossover was observed on the 1/M-T curve during the overheating process, indicating that a liquid-liquid structure transition(LLST) took place in the melt. Based on this information, the effects of LLST on the solidification behavior, microstructure and tribology property were investigated experimentally. The sample solidified with the LLST exhibits significantly different solidification behaviors,i.e., the nucleation undercooling and the recalescence extent are conspicuously enlarged, and the solidification time is shortened. As a result, the microstructure is effectively refined and homogenized, and the hardness and wear resistance are significantly enhanced. The present work might be helpful for not only theoretically understanding the influence of LLST on the solidification behavior but also providing an alternative approach to tailor the microstructure and properties.

引用

页码：58 / 71

页数：14

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