A Transmission Kikuchi Diffraction Study of a Cold‐Rolled and Annealed Fe–17Mn–2Si–3Al–1Ni–0.06C wt% Steel. Issue 10 (5th June 2015)

• Record Type: Journal Article
• Authors: Gazder, Azdiar A.; Saleh, Ahmed A.; Nancarrow, Mitchell J. B.; Mitchell, David R. G.; Pereloma, Elena V.; Bleck, Wolfgang
• Is Part Of: Steel research international. Volume 86:Issue 10(2015:Oct.)
• Page Start: 1204
• Page End: 1214
• Publication Date: 2015-06-05
• Subjects: Steel -- Periodicals; Steel -- Metallurgy -- Periodicals; 669.142
• DOI: 10.1002/srin.201500089
• Languages: English
• ISSNs: 1611-3683

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="srin201500089-sec-0001" sec-type="section"> <p>This study applies the recently developed transmission Kikuchi diffraction technique to investigate the microstructures and micro‐textures of a multi‐phase Fe–17Mn–3Al–2Si–1Ni–0.08C wt% steel that concurrently exhibits twinning‐ and transformation‐induced plasticity effects. The steel was cold rolled to 66% thickness reduction and subsequently annealed at 625 °C for 300 s. The cold‐rolled microstructure mainly consisted of α′ martensite interspersed with blocky ϵ martensite and remanent nanometer‐sized grains of γ. Annealing at 625 °C led to the partial transformation of α′ → γ and the reversion of ϵ → γ such that the microstructure comprised predominant nanometer‐sized γ grains interspersed with a smaller α′ phase and a trace fraction of nanometer‐sized ϵ along γ grain boundaries. During deformation via cold rolling and reverse transformation during annealing, micro‐texture analysis indicated the operation of the Shoji‐Nishiyama, Kurdjumov‐Sachs, and Burgers ORs between γ ↔ ϵ, γ ↔ α′, and ϵ ↔ α′, respectively.</p> </sec> </abstract>