Effect of Mo on the σ phase precipitation behavior of super austenitic stainless steel

Qun-kun Hu; Hua-yun Du; Xiaolu Sun; Li-feng Hou; Qian Wang; Zhanhu Guo; Handong Li; Jincheng Fan; Ying-hui Wei; Xiao-da Liu; Huan Wei; Xingkui Guo

doi:10.1680/jemmr.23.00085

Effect of Mo on the σ phase precipitation behavior of super austenitic stainless steel

Qun-kun Hu, Hua-yun Du, Xiaolu Sun, Li-feng Hou, Qian Wang, Zhanhu Guo, Handong Li, Jincheng Fan, Ying-hui Wei, Xiao-da Liu, Huan Wei, Xingkui Guo

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The aging precipitation behavior of super-austenitic stainless steels 904L (4.32% molybdenum (Mo)), 254SMo (6.06% molybdenum) and AL-6XN (6.29% molybdenum) with different molybdenum contents at 800-900°C was investigated by scanning electron microscopy, X-ray diffraction and transmission electron microscopy. The effect of molybdenum content on the σ-phase precipitation behavior of commonly used super-austenitic stainless steel was investigated. The results show that the super-austenitic stainless steels with different molybdenum contents formed different numbers and shapes of σ phases in the isothermal aging process, and the number of σ phases of 254SMo and AL-6XN is much larger than that of 904L, and the shape of the σ phases mainly shows coarse acicularity and elongation, while the σ phases of 904L show fine granularity.

Original language	English
Pages (from-to)	141-151
Number of pages	11
Journal	Emerging Materials Research
Volume	13
Issue number	2
Early online date	12 Feb 2024
DOIs	https://doi.org/10.1680/jemmr.23.00085
Publication status	Published - 1 Jun 2024

Keywords

UN SDG 9: Industry, innovation and infrastructure
steel
temperature
testing
σ phase

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title = "Effect of Mo on the σ phase precipitation behavior of super austenitic stainless steel",

abstract = "The aging precipitation behavior of super-austenitic stainless steels 904L (4.32% molybdenum (Mo)), 254SMo (6.06% molybdenum) and AL-6XN (6.29% molybdenum) with different molybdenum contents at 800-900°C was investigated by scanning electron microscopy, X-ray diffraction and transmission electron microscopy. The effect of molybdenum content on the σ-phase precipitation behavior of commonly used super-austenitic stainless steel was investigated. The results show that the super-austenitic stainless steels with different molybdenum contents formed different numbers and shapes of σ phases in the isothermal aging process, and the number of σ phases of 254SMo and AL-6XN is much larger than that of 904L, and the shape of the σ phases mainly shows coarse acicularity and elongation, while the σ phases of 904L show fine granularity.",

keywords = "UN SDG 9: Industry, innovation and infrastructure, steel, temperature, testing, σ phase",

author = "Qun-kun Hu and Hua-yun Du and Xiaolu Sun and Li-feng Hou and Qian Wang and Zhanhu Guo and Handong Li and Jincheng Fan and Ying-hui Wei and Xiao-da Liu and Huan Wei and Xingkui Guo",

year = "2024",

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doi = "10.1680/jemmr.23.00085",

language = "English",

volume = "13",

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journal = "Emerging Materials Research",

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TY - JOUR

T1 - Effect of Mo on the σ phase precipitation behavior of super austenitic stainless steel

AU - Hu, Qun-kun

AU - Du, Hua-yun

AU - Sun, Xiaolu

AU - Hou, Li-feng

AU - Wang, Qian

AU - Guo, Zhanhu

AU - Li, Handong

AU - Fan, Jincheng

AU - Wei, Ying-hui

AU - Liu, Xiao-da

AU - Wei, Huan

AU - Guo, Xingkui

PY - 2024/6/1

Y1 - 2024/6/1

N2 - The aging precipitation behavior of super-austenitic stainless steels 904L (4.32% molybdenum (Mo)), 254SMo (6.06% molybdenum) and AL-6XN (6.29% molybdenum) with different molybdenum contents at 800-900°C was investigated by scanning electron microscopy, X-ray diffraction and transmission electron microscopy. The effect of molybdenum content on the σ-phase precipitation behavior of commonly used super-austenitic stainless steel was investigated. The results show that the super-austenitic stainless steels with different molybdenum contents formed different numbers and shapes of σ phases in the isothermal aging process, and the number of σ phases of 254SMo and AL-6XN is much larger than that of 904L, and the shape of the σ phases mainly shows coarse acicularity and elongation, while the σ phases of 904L show fine granularity.

AB - The aging precipitation behavior of super-austenitic stainless steels 904L (4.32% molybdenum (Mo)), 254SMo (6.06% molybdenum) and AL-6XN (6.29% molybdenum) with different molybdenum contents at 800-900°C was investigated by scanning electron microscopy, X-ray diffraction and transmission electron microscopy. The effect of molybdenum content on the σ-phase precipitation behavior of commonly used super-austenitic stainless steel was investigated. The results show that the super-austenitic stainless steels with different molybdenum contents formed different numbers and shapes of σ phases in the isothermal aging process, and the number of σ phases of 254SMo and AL-6XN is much larger than that of 904L, and the shape of the σ phases mainly shows coarse acicularity and elongation, while the σ phases of 904L show fine granularity.

KW - UN SDG 9: Industry, innovation and infrastructure

KW - steel

KW - temperature

KW - testing

KW - σ phase

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U2 - 10.1680/jemmr.23.00085

DO - 10.1680/jemmr.23.00085

M3 - Article

SN - 2046-0147

VL - 13

SP - 141

EP - 151

JO - Emerging Materials Research

JF - Emerging Materials Research

IS - 2

ER -

Effect of Mo on the σ phase precipitation behavior of super austenitic stainless steel

Abstract

Keywords

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