TiC-reinforced CoCrFeMnNi composite processed by cold-consolidation and subsequent annealing

被引：21

作者：

Asghari-Rad, Peyman ^{[1
,2
]}

Nguyen, Nhung Thi-Cam ^{[1
,2
]}

Kim, Yongju ^{[1
]}

Zargaran, Alireza ^{[3
]}

Sathiyamoorthi, Praveen ^{[1
,2
]}

Kim, Hyoung Seop ^{[1
,2
,3
,4
]}

机构：

[1] Pohang Univ Sci & Technol POSTECH, Dept Mat Sci & Engn, Pohang 37673, South Korea

[2] Pohang Univ Sci & Technol POSTECH, Ctr High Entropy Alloys, Pohang 37673, South Korea

[3] Pohang Univ Sci & Technol POSTECH, Grad Inst Ferrous Technol GIFT, Pohang 37673, South Korea

[4] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

MATERIALS LETTERS | 2021年 / 303卷

关键词：

High-entropy alloys; Powder metallurgy; Cold-consolidation; Grain growth; MECHANICAL-PROPERTIES; MICROSTRUCTURE; FABRICATION;

D O I：

10.1016/j.matlet.2021.130503

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanostructured CoCrFeMnNi high-entropy alloy (HEA) reinforced with TiC nanoparticles was fabricated through cold-consolidation using high-pressure torsion followed by annealing. The microstructural and hardness evolutions of the HEA-TiC composite have been compared with the monolithic HEA sample (without TiC) fabricated by a similar route. The HEA-TiC composite with high densification of 99.5% and uniform distribution of TiC nanoparticles showed retarded grain growth due to the pinning effect and enhanced hardness compared to monolithic HEA. The HPT cold consolidation fabrication route can be utilized to produce various HEA-matrix composites.

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页数：4

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