Mitigating hot-cracking of laser melted CoCrFeNiMnTix high-entropy alloys

Jiawei Wang; Meiling Zhang; Huaming Wang; Zhuo Li; Xu Cheng; Bo Zhang; Jia Li; Xianzhe Ran

doi:10.1016/j.matlet.2022.131771

Mitigating hot-cracking of laser melted CoCrFeNiMnTi_x high-entropy alloys

Jiawei Wang
, Meiling Zhang
, Huaming Wang
, Zhuo Li^*
, Xu Cheng
, Bo Zhang
, Jia Li
, Xianzhe Ran

^*此作品的通讯作者

材料科学与工程学院

Beihang University
National Engineering Laboratory of Additive Manufacturing for Large Metallic Components

科研成果: 期刊稿件 › 文章 › 同行评审

15 引用（Scopus）

摘要

Additive manufacturing is a promising technique for fabricating high-alloyed metallic components such as CoCrFeMnNi high-entropy alloy with very fine microstructure and reduced macro-segregation. However, hot cracking nucleation at the interdendritic regions always occurs during preparation, which can hardly be controlled. In this study, the hot cracking possibility could be reduced by introducing element Ti into CoCrFeMnNi high-entropy alloy with the improved alloy microhardness (182 ± 8.7 HV to 973 ± 43.2 HV). At the final solidification stage, eutectic interaction takes place in the interdendritic regions. Body-centered-cubic (BCC) and a few σ phases form, dividing the liquid film and releasing the local stress concentration. CoCrFeNiMnTi_0.6 sample without cracks is observed.

源语言	英语
文章编号	131771
期刊	Materials Letters
卷	314
DOI	https://doi.org/10.1016/j.matlet.2022.131771
出版状态	已出版 - 1 5月 2022

访问文件

10.1016/j.matlet.2022.131771

其它文件与链接

链接到 Scopus 的出版物

引用此

@article{b8536c8540344ef6947a5ca36b4bc9c9,

title = "Mitigating hot-cracking of laser melted CoCrFeNiMnTix high-entropy alloys",

abstract = "Additive manufacturing is a promising technique for fabricating high-alloyed metallic components such as CoCrFeMnNi high-entropy alloy with very fine microstructure and reduced macro-segregation. However, hot cracking nucleation at the interdendritic regions always occurs during preparation, which can hardly be controlled. In this study, the hot cracking possibility could be reduced by introducing element Ti into CoCrFeMnNi high-entropy alloy with the improved alloy microhardness (182 ± 8.7 HV to 973 ± 43.2 HV). At the final solidification stage, eutectic interaction takes place in the interdendritic regions. Body-centered-cubic (BCC) and a few σ phases form, dividing the liquid film and releasing the local stress concentration. CoCrFeNiMnTi0.6 sample without cracks is observed.",

keywords = "High-entropy alloy, Hot cracking, Laser processing, Metals and alloys",

author = "Jiawei Wang and Meiling Zhang and Huaming Wang and Zhuo Li and Xu Cheng and Bo Zhang and Jia Li and Xianzhe Ran",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = may,

day = "1",

doi = "10.1016/j.matlet.2022.131771",

language = "英语",

volume = "314",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Mitigating hot-cracking of laser melted CoCrFeNiMnTix high-entropy alloys

AU - Wang, Jiawei

AU - Zhang, Meiling

AU - Wang, Huaming

AU - Li, Zhuo

AU - Cheng, Xu

AU - Zhang, Bo

AU - Li, Jia

AU - Ran, Xianzhe

PY - 2022/5/1

Y1 - 2022/5/1

N2 - Additive manufacturing is a promising technique for fabricating high-alloyed metallic components such as CoCrFeMnNi high-entropy alloy with very fine microstructure and reduced macro-segregation. However, hot cracking nucleation at the interdendritic regions always occurs during preparation, which can hardly be controlled. In this study, the hot cracking possibility could be reduced by introducing element Ti into CoCrFeMnNi high-entropy alloy with the improved alloy microhardness (182 ± 8.7 HV to 973 ± 43.2 HV). At the final solidification stage, eutectic interaction takes place in the interdendritic regions. Body-centered-cubic (BCC) and a few σ phases form, dividing the liquid film and releasing the local stress concentration. CoCrFeNiMnTi0.6 sample without cracks is observed.

AB - Additive manufacturing is a promising technique for fabricating high-alloyed metallic components such as CoCrFeMnNi high-entropy alloy with very fine microstructure and reduced macro-segregation. However, hot cracking nucleation at the interdendritic regions always occurs during preparation, which can hardly be controlled. In this study, the hot cracking possibility could be reduced by introducing element Ti into CoCrFeMnNi high-entropy alloy with the improved alloy microhardness (182 ± 8.7 HV to 973 ± 43.2 HV). At the final solidification stage, eutectic interaction takes place in the interdendritic regions. Body-centered-cubic (BCC) and a few σ phases form, dividing the liquid film and releasing the local stress concentration. CoCrFeNiMnTi0.6 sample without cracks is observed.

KW - High-entropy alloy

KW - Hot cracking

KW - Laser processing

KW - Metals and alloys

UR - https://www.scopus.com/pages/publications/85124659387

U2 - 10.1016/j.matlet.2022.131771

DO - 10.1016/j.matlet.2022.131771

M3 - 文章

AN - SCOPUS:85124659387

SN - 0167-577X

VL - 314

JO - Materials Letters

JF - Materials Letters

M1 - 131771

ER -

Mitigating hot-cracking of laser melted CoCrFeNiMnTix high-entropy alloys

摘要

访问文件

其它文件与链接

指纹

引用此

Mitigating hot-cracking of laser melted CoCrFeNiMnTi_x high-entropy alloys