Fabricating interstitial-free steel with simultaneous high strength and good ductility with homogeneous layer and lamella structure

Ling Zhang, Zhen-Zhe Chen, Yuhui Wang, Guoqiang Ma, Tianlin Huang, Guilin Wu, Dorte Juul Jensen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Annealed interstitial-free steel (IF steel) and deformed IF steel sheets were stacked alternatively into multi-layers to produce laminated IF steel through thermal-mechanical processing. After proper processing, a yield strength of 500 MPa, an ultimate tensile strength of 600 MPa (comparable to cold rolled one) and a uniform elongation around 17% can be realized. Microstructural observation by electron back-scatter diffraction revealed a characteristic hierarchical layer + heterogeneous lamella structure, namely L2 structure. The reasons for the good mechanical properties were discussed.
Original languageEnglish
JournalScripta Materialia
Volume141
Pages (from-to)111-114
ISSN1359-6462
DOIs
Publication statusPublished - 2017

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