Effect of Zr on precipitation kinetics of Fe-Cr-Al alloys

Ben Niu; Zhenhua Wang; Qing Wang; Sen Ge; Chuang Dong; Ruiqian Zhang

doi:10.1080/25787616.2024.2328409

Heat Treatment and Surface Engineering (Dec 2024)

Effect of Zr on precipitation kinetics of Fe-Cr-Al alloys

Ben Niu,
Zhenhua Wang,
Qing Wang,
Sen Ge,
Chuang Dong,
Ruiqian Zhang

Affiliations

Ben Niu: School of Materials Science and Engineering, Engineering Research Center of High Entropy Alloy Materials (Liaoning Province), Dalian University of Technology, Dalian, People’s Republic of China
Zhenhua Wang: School of Materials Science and Engineering, Engineering Research Center of High Entropy Alloy Materials (Liaoning Province), Dalian University of Technology, Dalian, People’s Republic of China
Qing Wang: School of Materials Science and Engineering, Engineering Research Center of High Entropy Alloy Materials (Liaoning Province), Dalian University of Technology, Dalian, People’s Republic of China
Sen Ge: School of Materials Science and Engineering, Engineering Research Center of High Entropy Alloy Materials (Liaoning Province), Dalian University of Technology, Dalian, People’s Republic of China
Chuang Dong: School of Materials Science and Engineering, Engineering Research Center of High Entropy Alloy Materials (Liaoning Province), Dalian University of Technology, Dalian, People’s Republic of China
Ruiqian Zhang: Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu, People’s Republic of China

DOI: https://doi.org/10.1080/25787616.2024.2328409
Journal volume & issue: Vol. 6, no. 1

Abstract

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The present work investigated the effect of Zr on the precipitation behavior and mechanical properties of Fe-13.5Cr-4.73Al-2.07Mo-(0.34∼0.45)Nb-(0.65∼0.87)Ta-(0.11∼0.33)Zr (wt. %) alloys. The sheet samples were solution treated at 1473 K for 2 h, and then aged at 1073 K for 0∼24 h. The results show that the addition of Zr significantly refines the grains, postpones the precipitation of Laves phase particles, shifts the precipitation kinetics curve to the right, and prolongs the incubation period of phase transformation. At the same time, the low diffusion coefficient of Zr also delays the coarsening rate of precipitated particles. And the yield strength of 0.1Zr alloy (σYS = 418 MPa, δ = 10%) is significantly higher than that of 0.3Zr alloy (σYS = 375 MPa, δ = 6%), exhibiting more prominent mechanical properties.

Published in Heat Treatment and Surface Engineering

ISSN: 2578-7616 (Online)
Publisher: Taylor & Francis Group
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.tandfonline.com/journals/thts

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