Study on oxide precipitations and their interaction with dislocations in laser powder bed fusion Mo-Re alloys

Bingnan Qian; Jinyong Zhang; Guoliang Huang; Yao Chen; Jingjing Liao; Jun Wu; Ke Huang; Yong Chen; Shaojun Long; Jiangkun Fan; Yong He

doi:10.1016/j.matlet.2024.137970

Study on oxide precipitations and their interaction with dislocations in laser powder bed fusion Mo-Re alloys

Bingnan Qian, Jinyong Zhang, Guoliang Huang, Yao Chen, Jingjing Liao, Jun Wu, Ke Huang, Yong Chen, Shaojun Long, Jiangkun Fan, Yong He

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

In this study, crack-free and highly dense Mo-Re alloys were successfully fabricated using the laser powder bed fusion (L-PBF) additive manufacturing process. The fabricated alloys exhibited excellent mechanical properties at room temperature. During the L-PBF process, oxides ranging from micron to nanometer sizes were observed within the alloy matrix. These oxides were uniformly distributed and showed no grain boundary segregation. After deformation, the interaction between these oxides and dislocations was confirmed via the transmission electron microscopy investigations. The interaction between oxides and dislocations might play a significant role in enhancing the ductility of the alloy.

Original language	English
Article number	137970
Journal	Materials Letters
Volume	383
DOIs	https://doi.org/10.1016/j.matlet.2024.137970
State	Published - 15 Mar 2025

Keywords

Additive manufacturing
Laser power bed fusion
Mechanical properties
Mo-Re alloys
Oxide

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10.1016/j.matlet.2024.137970

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title = "Study on oxide precipitations and their interaction with dislocations in laser powder bed fusion Mo-Re alloys",

abstract = "In this study, crack-free and highly dense Mo-Re alloys were successfully fabricated using the laser powder bed fusion (L-PBF) additive manufacturing process. The fabricated alloys exhibited excellent mechanical properties at room temperature. During the L-PBF process, oxides ranging from micron to nanometer sizes were observed within the alloy matrix. These oxides were uniformly distributed and showed no grain boundary segregation. After deformation, the interaction between these oxides and dislocations was confirmed via the transmission electron microscopy investigations. The interaction between oxides and dislocations might play a significant role in enhancing the ductility of the alloy.",

keywords = "Additive manufacturing, Laser power bed fusion, Mechanical properties, Mo-Re alloys, Oxide",

author = "Bingnan Qian and Jinyong Zhang and Guoliang Huang and Yao Chen and Jingjing Liao and Jun Wu and Ke Huang and Yong Chen and Shaojun Long and Jiangkun Fan and Yong He",

note = "Publisher Copyright: {\textcopyright} 2024",

year = "2025",

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day = "15",

doi = "10.1016/j.matlet.2024.137970",

language = "英语",

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journal = "Materials Letters",

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TY - JOUR

T1 - Study on oxide precipitations and their interaction with dislocations in laser powder bed fusion Mo-Re alloys

AU - Qian, Bingnan

AU - Zhang, Jinyong

AU - Huang, Guoliang

AU - Chen, Yao

AU - Liao, Jingjing

AU - Wu, Jun

AU - Huang, Ke

AU - Chen, Yong

AU - Long, Shaojun

AU - Fan, Jiangkun

AU - He, Yong

PY - 2025/3/15

Y1 - 2025/3/15

N2 - In this study, crack-free and highly dense Mo-Re alloys were successfully fabricated using the laser powder bed fusion (L-PBF) additive manufacturing process. The fabricated alloys exhibited excellent mechanical properties at room temperature. During the L-PBF process, oxides ranging from micron to nanometer sizes were observed within the alloy matrix. These oxides were uniformly distributed and showed no grain boundary segregation. After deformation, the interaction between these oxides and dislocations was confirmed via the transmission electron microscopy investigations. The interaction between oxides and dislocations might play a significant role in enhancing the ductility of the alloy.

AB - In this study, crack-free and highly dense Mo-Re alloys were successfully fabricated using the laser powder bed fusion (L-PBF) additive manufacturing process. The fabricated alloys exhibited excellent mechanical properties at room temperature. During the L-PBF process, oxides ranging from micron to nanometer sizes were observed within the alloy matrix. These oxides were uniformly distributed and showed no grain boundary segregation. After deformation, the interaction between these oxides and dislocations was confirmed via the transmission electron microscopy investigations. The interaction between oxides and dislocations might play a significant role in enhancing the ductility of the alloy.

KW - Additive manufacturing

KW - Laser power bed fusion

KW - Mechanical properties

KW - Mo-Re alloys

KW - Oxide

UR - http://www.scopus.com/inward/record.url?scp=85214036860&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2024.137970

DO - 10.1016/j.matlet.2024.137970

M3 - 文章

AN - SCOPUS:85214036860

SN - 0167-577X

VL - 383

JO - Materials Letters

JF - Materials Letters

M1 - 137970

ER -

Study on oxide precipitations and their interaction with dislocations in laser powder bed fusion Mo-Re alloys

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Keywords

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