Development of Novel Lightweight Dual-Phase Al-Ti-Cr-Mn-V Medium-Entropy Alloys with High Strength and Ductility

被引：13

作者：

Liao, Yu-Chin ^{[1
]}

Chen, Po-Sung ^{[2
]}

Li, Chao-Hsiu ^{[2
]}

Tsai, Pei-Hua ^{[2
]}

Jang, Jason S. C. ^{[1
,2
]}

Hsieh, Ker-Chang ^{[3
]}

Chen, Chih-Yen ^{[3
]}

Lin, Ping-Hung ^{[3
]}

Huang, Jacob C. ^{[3
,4
]}

Wu, Hsin-Jay ^{[5
]}

Lo, Yu-Chieh ^{[5
]}

Huang, Chang-Wei ^{[6
,7
]}

Tsao, I-Yu ^{[2
]}

机构：

[1] Natl Cent Univ, Dept Mech Engn, Taoyuan 320, Taiwan

[2] Natl Cent Univ, Inst Mat Sci & Engn, Taoyuan 320, Taiwan

[3] Natl Sun Yat Sen Univ, Dept Mat & Optoelect Sci, Kaohsiung 804, Taiwan

[4] City Univ Hong Kong, Dept Mat Sci & Engn, Inst Adv Study, Kowloon, Hong Kong, Peoples R China

[5] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan

[6] Chung Yuan Christian Univ, Dept Civil Engn, Taoyuan 320, Taiwan

[7] Chung Yuan Christian Univ, R&D Ctr Membrane Technol, Taoyuan 320, Taiwan

来源：

ENTROPY | 2020年 / 22卷 / 01期

关键词：

high-entropy alloy; medium-entropy alloy; lightweight alloy; mechanical property; MECHANICAL-PROPERTIES; MICROSTRUCTURE; STABILITY; X=0;

D O I：

10.3390/e22010074

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A novel lightweight Al-Ti-Cr-Mn-V medium-entropy alloy (MEA) system was developed using a nonequiatiomic approach and alloys were produced through arc melting and drop casting. These alloys comprised a body-centered cubic (BCC) and face-centered cubic (FCC) dual phase with a density of approximately 4.5 g/cm(3). However, the fraction of the BCC phase and morphology of the FCC phase can be controlled by incorporating other elements. The results of compression tests indicated that these Al-Ti-Cr-Mn-V alloys exhibited a prominent compression strength (1940 MPa) and ductility (30%). Moreover, homogenized samples maintained a high compression strength of 1900 MPa and similar ductility (30%). Due to the high specific compressive strength (0.433 GPag/cm(3)) and excellent combination of strength and ductility, the cast lightweight Al-Ti-Cr-Mn-V MEAs are a promising alloy system for application in transportation and energy industries.

引用

页数：14

共 20 条

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