Effect of the Channel Angle of One-Pass ECAP Prior to Cold Rolling on the Microstructure and Texture of Metallic Sheets

Hiroyuki Miyamoto; Masashi Ueda; Fujiwara Hiroshi

doi:10.4028/www.scientific.net/MSF.783-786.2591

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Influence of Strain Path on Work Hardening and Texture in an Austenitic Stainless Steel
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HomeMaterials Science ForumMaterials Science Forum Vols. 783-786Effect of the Channel Angle of One-Pass ECAP Prior...

Effect of the Channel Angle of One-Pass ECAP Prior to Cold Rolling on the Microstructure and Texture of Metallic Sheets

Abstract:

Equal-channel angular pressing (ECAP) was applied to 16mass%Cr steel sheets for one pass prior to cold rolling in order to improve formability and alleviate ridging of the sheets. Effect of channel angle of ECAP (90° and 120°) on the deformation microstructure and the subsequent recrystallization was focused. One-pass ECAP indeed modified the cold-rolled microstructures, texture and subsequent recrystallization as compared with that in cold rolling alone. In particular, grain-scale shear bands were introduced during ECAP in otherwise hard-to-recrystallize <001>//ND grains by ECAP, and they facilitated the recrystallization. However, the effect of reducing the channel angle from 120°to 90°on the recrystallization and the formability was limited in spite of higher shear strain imposed on the sheets.

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Periodical:

Materials Science Forum (Volumes 783-786)

Pages:

2591-2596

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.783-786.2591

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Online since:

May 2014

Authors:

Hiroyuki Miyamoto*, Masashi Ueda, Fujiwara Hiroshi

Keywords:

Equal-Channel Angular Pressing (ECAP), Ferritic Stainless Steel, Recrystallization, Ridging, Shear Band, Texture

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