A σ phase-γ phase orientation relationship observed in solidification of the 7Mo super-austenitic stainless steel

Runze Zhang; Jinshan He; Shiguang Xu; Fucheng Zhang; Yizhan Ma; Xitao Wang

Journal of Materials Research and Technology (Nov 2022)

A σ phase-γ phase orientation relationship observed in solidification of the 7Mo super-austenitic stainless steel

Runze Zhang,
Jinshan He,
Shiguang Xu,
Fucheng Zhang,
Yizhan Ma,
Xitao Wang

Affiliations

Runze Zhang: Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, PR China
Jinshan He: Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, PR China; Corresponding author.
Shiguang Xu: Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, PR China
Fucheng Zhang: State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
Yizhan Ma: National Vaccine and Serum Institute, Beijing 100176, PR China
Xitao Wang: Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, PR China; Shandong Provincial Key Laboratory for High Strength Lightweight Metallic Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Science), Jinan 250353, China; Corresponding author.

Journal volume & issue: Vol. 21
pp. 1248 – 1255

Abstract

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In-situ observation and microstructure analysis were combined with the nanoindentation to study the effect of the orientation relationship between the σ and γ phases on the mechanical property of the 7Mo super austenite stainless steel. The results from the HRTEM and the nanoindentation indicate that the semi-coherent interface (111)γ // (001)σ (which is composed of several atomic layers in the absence of element segregation) produced by eutectic transformation, effectively improves the strength of the interface.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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