温轧对低铬FeCrAl合金显微组织及室温和高温力学性能的影响

doi:10.11896/cldb.24060057

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Abstract The effects of different warm rolling (WR) reductions on the microstructure and mechanical properties of low-Cr FeCrAl alloys at both room and elevated temperatures were investigated. The study revealed that when the WR reduction is small, it effectively refines the grains and forms a large number of subgrains in the matrix, while also inducing the dissolution of the Laves phase. This enhances the mechanical properties of FeCrAl alloys primarily through grain refinement and solid solution strengthening. Conversely, with larger WR reductions, the grain refinement effect diminishes, but a significant number of Laves phases form in the matrix, strengthening the alloys primarily through precipitation strengthening. WR exhibited a remarkable enhancing effect on the comprehensive mechanical properties at both room and high temperatures, with a signi-ficant enhancement in ductility at high temperatures. Notably, a 10% WR reduction resulted in the optimal overall mechanical properties at both room and elevated temperatures.

Key words： FeCrAl alloy low-Cr warm rolling Laves phases mechanical property

Published: 10 May 2025 Online: 2025-04-28

CLC number:

TG142

Corresponding Authors: ^*Hui Wang,is a specially-appointed researcher and Ph.D.supervisor at the College of Materials Science and Engineering,Sichuan University.He is a recipient of the National Natural Science Foundation of China (NSFC) Excellent Young Scientists Fund.Dr.Wang’s research focuses on nuclear energy materials and their service behavior.qinghe5525@163.com; Xuefei Huang,is a professor and Ph.D.supervisor at the College of Materials Science and Engineering,Sichuan University.Dr.Huang’s research focuses on the experimental and theoretical study of the relationships between microstructure and properties of advanced metallic structural materials,including structural materials for nuclear applications,advanced high-strength steels,and magnesium alloys.huangxf08@scu.edu.cn

About author: Gangming Chen is a master’s student at the College of Materials Science and Engineering,Sichuan University.Under the guidance of Specially-Appointed Researcher Hui Wang and Associate Professor Xuefei Huang,his research focuses on the experimental and theoretical study of the relationships between the microstructure and properties of FeCrAl alloys.

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Cite this article:

CHEN Gangming,WANG Hui,HUANG Xuefei. Effects of Warm Rolling on the Microstructure and Mechanical Properties of Low-Cr FeCrAl Alloys at Room and Elevated Temperatures[J]. Materials Reports, 2025, 39(9): 24060057-11.

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https://www.mater-rep.com/EN/10.11896/cldb.24060057 OR https://www.mater-rep.com/EN/Y2025/V39/I9/24060057

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