Fostering deep drawability through recrystallization texture strengthening in aluminum-rich interstitial free steel

Tamboli, Rameez R. and Guennec, Benjamin and Fujiwara, Hiroshi and Ameyama, Kei and Bhattacharya, Basudev and Dey, Suhash Ranjan (2022) Fostering deep drawability through recrystallization texture strengthening in aluminum-rich interstitial free steel. Materials Characterization, 193. pp. 1-12. ISSN 1044-5803

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Abstract

The development of strong normal direction (ND)║〈111〉 fiber texture is crucial for deep drawability in interstitial free steels used for automotive applications. The present work focuses on comparative investigations on texture development, Lankford parameter measurement, microstructural evolution, recrystallization kinetics, and grain growth kinetics of titanium‑niobium stabilized interstitial free steels with different aluminum (Al) content. Industrially hot-rolled interstitial free steels with 0.06 wt% Al and 0.17 wt% Al were cold-rolled (∼90%), followed by isothermal annealing at 650 °C, 675 °C, and 700 °C for various time intervals. Texture studies using electron backscatter diffraction and X-ray diffraction showed the formation of a stronger ND fiber texture in 0.17 wt% Al steel compared to 0.06 wt% Al Steel after full recrystallization. A high rm value in 0.17 wt% Al steel than in 0.06 wt% Al Steel indicates the beneficial effects of Al addition in interstitial free steel. The study of recrystallization kinetics depicted faster recrystallization kinetics in interstitial free steel with 0.17 wt% Al. The grain growth kinetics of recrystallized grains illustrated similar behavior in both steels. At the onset of recrystallization in 0.06 wt% Al steel, a transient strengthening of the {001} 〈110〉 component (an effect of stress-induced boundary migration) was observed, which obstructed the nucleation of ND fiber grains. In contrast, the initial rapid nucleation of ND fiber grains in the 0.17 wt% Al steel was responsible for stronger ND fiber texture development. © 2022 Elsevier Inc.

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IITH Creators:

IITH Creators	ORCiD
Dey, Suhash Ranjan	http://orcid.org/0000-0002-5148-9534

Item Type:

Article

Additional Information:

The authors are thankful to Tata Steel Limited, Jamshedpur, India, for providing materials and funding for this research work. The EBSD data was acquired from a FEG-SEM procured through a DST-FIST grant (SR/FST/ETI-421/2016).

Uncontrolled Keywords:

Crystallographic texture; Electron backscatter diffraction; Grain growth kinetics; Interstitial free steel; Microstructure; Recrystallization kinetics

Subjects:

Others > Metallurgy
Materials Engineering > Materials engineering

Divisions:

Department of Material Science Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

14 Sep 2022 12:53

Last Modified:

14 Sep 2022 12:53

URI:

http://raiithold.iith.ac.in/id/eprint/10571