Effect of Warm-Rolling on the Formation of Microstructure and Microtexture of the Constituent Phases in a Duplex Steel

Prasad Bhattacharjee Pinaki; Zaid Ahmed Mohammed

doi:10.4028/www.scientific.net/MSF.783-786.2555

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HomeMaterials Science ForumMaterials Science Forum Vols. 783-786Effect of Warm-Rolling on the Formation of...

Effect of Warm-Rolling on the Formation of Microstructure and Microtexture of the Constituent Phases in a Duplex Steel

Abstract:

The effect of warm-rolling on the evolution of microstructure and microtexture was investigated in a duplex steel. For this purpose annealed duplex steel plates were cold and warm-rolled up to 90% reduction in thickness at room temperature and at 625°C, respectively. The austenite volume fraction decreased consistently during cold-rolling indicating that austenite was not stable during cold-rolling. In contrast, austenite was found to be very stable during warm-rolling at 625°C. Development of an ultrafine lamellar deformation structure with alternate arrangement of the ferrite and austenite bands could be observed during warm-rolling. A strong pure metal or copper type texture was observed in the austenite in the warm-rolled material in contrast to brass texture developed during cold-rolling. Development of RD (RD//<110>) fiber and ND-fiber (ND//<111>) was observed in ferrite during both cold and warm-rolling. However, the strength of the RD-fiber was much higher as compared to the ND-fiber in ferrite in cold-rolled DSS as compared to the ferrite in warm-rolled DSS.

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Periodical:

Materials Science Forum (Volumes 783-786)

Pages:

2555-2560

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.783-786.2555

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Online since:

May 2014

Authors:

Prasad Bhattacharjee Pinaki*, Zaid Ahmed Mohammed

Keywords:

Cold-Rolling, Duplex Stainless Steels, Microstructure, Texture, Warm-Rolling

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