Effect of rolling deformation on microstructure and  mechanical properties of high-entropy alloy

doi:10.13251/j.issn.0254-6051.2022.03.013

Abstract

Abstract: Annealing, cold rolling and hot rolling+cold rolling were carried out on (FeNi)₆₇Cr₁₅Mn₁₀Al₅Ti₃ high-entropy alloy. The phase composition, morphology and mechanical of the alloy were analyzed by means of X-ray diffractometer, SEM and universal testing machine. The results show that the as-cast and annealed (FeNi)₆₇Cr₁₅Mn₁₀Al₅Ti₃ high-entropy alloy is easier to form single-phase solid solution. The two-phase solid solution alloy with FCC+BCC structure is formed under the hot rolling+cold rolling with medium deformation, and its yield strength can be increased to 460.0 MPa. The fine intermetallic compound is formed under cold rolling with medium deformation, resulting in fine intermetallic compound strengthening. The yield strength of the cold rolled alloy is significantly increased to 722.0 MPa with elongation of 25.7%, which is of the best comprehensive mechanical properties.

Key words: high-entropy alloy, rolling deformation, microstructure, mechanical properties

CLC Number:

TG156.21

Mei Jinna, Jiang Fengyang, Wei Na, Liu Langlang, Si Fang, Liu Songtao, Wang Junbo, Liu Jiangnan. Effect of rolling deformation on microstructure and mechanical properties of high-entropy alloy[J]. Heat Treatment of Metals, 2022, 47(3): 67-71.

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Effect of rolling deformation on microstructure and mechanical properties of high-entropy alloy

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