双相不锈钢相分解研究进展<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.015.011

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Abstract Duplex stainless steel has been used widely in industrial fields, such as nuclear power plant, for its excellent mechanical property, corrosion resistance and resistance to irradiation damage at high temperature. The ferritic phase decomposes into iron-rich phase and chromium-rich phase in the range of 300—550 ℃, which results in the “475 ℃ embrittlement” and the poor mechanical properties, affecting the service life and safety of duplex stainless steel. However, the decomposition mechanism of the alloy with the composition variation, and the boundary of miscible gap are still unclear, which affects the decomposition kinetics and microstructure of the alloy. The paper reviews the results of experiments and phase-field simulations on the phase decomposition of Fe-Cr alloys, discusses the unresolved issues and development direction in this field, attempting to provide a reference for related studies.

Key words： phase decomposition Fe-Cr alloy phase-field

Published: 04 May 2018

CLC number:

TB303

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	Articles by authors
	YAN Zhilong
	LI Yongsheng
	HU Kai
	ZHOU Xiaorong

Cite this article:

YAN Zhilong,LI Yongsheng,HU Kai, et al. Progress of Study on Phase Decomposition of Duplex Stainless Steel[J]. Materials Reports, 2017, 31(15): 75-80.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.015.011 OR http://www.mater-rep.com/EN/Y2017/V31/I15/75

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