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Huang, G.; Wan, X. L.; Wu, K. M.; Isayev, O.; Hress, O.; Rodionova, I. and Shirzadi, A. A.
(2016).
DOI: https://doi.org/10.1080/02670836.2016.1238647
Abstract
The effects of Cu content on microstructure and impact toughness in the simulated coarse-grained heat-affected zone (CGHAZ) of high-strength low-alloy steels were investigated. It has been observed that the microstructure in the simulated CGHAZ of Cu-free steel is dominated by a small proportion of acicular ferrite and predominantly bainite with martensite–austenite constituent. Whereas, in the 0.45 and 1.01% Cu-containing steels, the acicular ferrite increased significantly due to the effective nucleation on intragranular inclusions with outer layer of MnS and CuS. The formation of acicular ferrite is attributed to superior high heat-affected zone impact toughness in the 0.45% Cu-containing steel. Furthermore, the increasing martensite–austenite constituent and ε-Cu precipitates in the simulated CGHAZ of 1.01% Cu-containing steel caused degradation in impact toughness.
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About
- Item ORO ID
- 53261
- Item Type
- Journal Item
- ISSN
- 1743-2847
- Project Funding Details
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Funded Project Name Project ID Funding Body Not Set 2014M550414 China Postdoctoral Science Foundation Not Set 2015BHE008 International Science and Technology Corporation Program of Hubei Province Not Set 2011DFR51040 Central Government - Keywords
- CGHAZ, Impact toughness, Acicular ferrite, M–A constituent, Cu precipitation
- Academic Unit or School
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Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM) - Copyright Holders
- © 2016 Institute of Materials, Minerals and Mining
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