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Title: Effect of cold working and isothermal aging on the precipitation of sigma phase in 2205 duplex stainless steel

Abstract

A comprehensive understanding of the formation of the sigma phase resulting from the eutectoid reaction ({delta} {yields} {sigma} + {gamma}{sub 2}) is required. The kinetics necessary for the eutectoid reaction are closely related to the amount of plastic deformation in DSS. This work investigates the microstructural evolution of the {sigma} phase in a 22Cr-5Ni SAF 2205 DSS after subsequent plastic deformation and isothermal aging. The precipitation of the {sigma} phase resulted from the higher driving force for precipitating intermetallic compounds and the higher diffusion rate of their elements by cold-rolling, as well as the sufficient supply of molybdenum. The maximum amount of {sigma} phase precipitation remarkably increased with an increasing cold deformation, as compared with the non-cold-rolled materials. - Highlights: Black-Right-Pointing-Pointer The microstructural evolution of sigma phase has been characterized. Black-Right-Pointing-Pointer The chemical compositions of sigma phases were analyzed using TEM-EDX. Black-Right-Pointing-Pointer The effect of cold deformation on the precipitation of sigma phase was investigated.

Authors:
 [1];  [2]
  1. Radiology, Harvard Medical School, Charlestown, MA 02129 (United States)
  2. Department of Materials Science and Engineering, Research Institute of Functional Surface Engineering, Chonnam National University, Gwangju 500-757 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22163167
Resource Type:
Journal Article
Journal Name:
Materials Characterization
Additional Journal Information:
Journal Volume: 75; Journal Issue: Complete; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1044-5803
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CHEMICAL COMPOSITION; COLD WORKING; DEFORMATION; DIFFUSION; INTERMETALLIC COMPOUNDS; KINETICS; MICROSTRUCTURE; MOLYBDENUM; PLASTICITY; PRECIPITATION; STAINLESS STEELS; TRANSMISSION ELECTRON MICROSCOPY

Citation Formats

Cho, Hoon-Sung, and Lee, Kwangmin. Effect of cold working and isothermal aging on the precipitation of sigma phase in 2205 duplex stainless steel. United States: N. p., 2013. Web. doi:10.1016/J.MATCHAR.2012.10.006.
Cho, Hoon-Sung, & Lee, Kwangmin. Effect of cold working and isothermal aging on the precipitation of sigma phase in 2205 duplex stainless steel. United States. doi:10.1016/J.MATCHAR.2012.10.006.
Cho, Hoon-Sung, and Lee, Kwangmin. Tue . "Effect of cold working and isothermal aging on the precipitation of sigma phase in 2205 duplex stainless steel". United States. doi:10.1016/J.MATCHAR.2012.10.006.
@article{osti_22163167,
title = {Effect of cold working and isothermal aging on the precipitation of sigma phase in 2205 duplex stainless steel},
author = {Cho, Hoon-Sung and Lee, Kwangmin},
abstractNote = {A comprehensive understanding of the formation of the sigma phase resulting from the eutectoid reaction ({delta} {yields} {sigma} + {gamma}{sub 2}) is required. The kinetics necessary for the eutectoid reaction are closely related to the amount of plastic deformation in DSS. This work investigates the microstructural evolution of the {sigma} phase in a 22Cr-5Ni SAF 2205 DSS after subsequent plastic deformation and isothermal aging. The precipitation of the {sigma} phase resulted from the higher driving force for precipitating intermetallic compounds and the higher diffusion rate of their elements by cold-rolling, as well as the sufficient supply of molybdenum. The maximum amount of {sigma} phase precipitation remarkably increased with an increasing cold deformation, as compared with the non-cold-rolled materials. - Highlights: Black-Right-Pointing-Pointer The microstructural evolution of sigma phase has been characterized. Black-Right-Pointing-Pointer The chemical compositions of sigma phases were analyzed using TEM-EDX. Black-Right-Pointing-Pointer The effect of cold deformation on the precipitation of sigma phase was investigated.},
doi = {10.1016/J.MATCHAR.2012.10.006},
journal = {Materials Characterization},
issn = {1044-5803},
number = Complete,
volume = 75,
place = {United States},
year = {2013},
month = {1}
}