Creep-induced heterogeneous precipitation of Laves phase with two morphologies in tempered martensite ferritic steels

Bo Xiao; Haokai Dong; Tao Yang; Shaofei Liu; Shenbao Jin; Boxuan Cao; Yongdian Han; Lei Zhao; Xiawei Yang; Gang Sha; Lianyong Xu

doi:10.1080/21663831.2023.2208613

Materials Research Letters (Aug 2023)

Creep-induced heterogeneous precipitation of Laves phase with two morphologies in tempered martensite ferritic steels

Bo Xiao,
Haokai Dong,
Tao Yang,
Shaofei Liu,
Shenbao Jin,
Boxuan Cao,
Yongdian Han,
Lei Zhao,
Xiawei Yang,
Gang Sha,
Lianyong Xu

Affiliations

Bo Xiao: School of Materials Science and Engineering, Tianjin University, Tianjin, People’s Republic of China
Haokai Dong: Guangdong Key Laboratory for Processing and Forming of Advanced Metallic Materials, South China University of Technology, Guangzhou, People’s Republic of China
Tao Yang: Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, People’s Republic of China
Shaofei Liu: Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, People’s Republic of China
Shenbao Jin: Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing, People’s Republic of China
Boxuan Cao: Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, People’s Republic of China
Yongdian Han: School of Materials Science and Engineering, Tianjin University, Tianjin, People’s Republic of China
Lei Zhao: School of Materials Science and Engineering, Tianjin University, Tianjin, People’s Republic of China
Xiawei Yang: State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi’an, People’s Republic of China
Gang Sha: Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing, People’s Republic of China
Lianyong Xu: School of Materials Science and Engineering, Tianjin University, Tianjin, People’s Republic of China

DOI: https://doi.org/10.1080/21663831.2023.2208613
Journal volume & issue: Vol. 11, no. 8
pp. 630 – 637

Abstract

Read online

We report two typical morphologies (elongated- and blocky-shaped) of the Laves phase in tempered martensite ferritic steels during creep process, originating from the two independent formation paths, i.e. along grain boundaries (GBs) and neighboring M23C6. This is attributed to the multi-element segregation (Cr, Mn, Si and W) at GBs and adjacent M23C6 that serves as suppliers of Laves phase formers. Furthermore, the subsequent different growth mechanisms play crucial roles in the two typical morphologies. Our findings improve the understanding of Laves phase heterogeneous precipitation and provide new insights for the innovation of novel heat-resistant steels with superior creep strength.

Published in Materials Research Letters

ISSN: 2166-3831 (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/tmrl

About the journal

Abstract

Keywords