Comprehensive Observations and Interpretations in Al-Rich Interstitial-Free High-Strength Steel via Process-Induced Structure Evolution

Tamboli, Rameez R. and Guennec, Benjamin and Fujiwara, Hiroshi and Ameyama, Kei and Bhattacharya, Basudev and Dey, Suhash Ranjan (2022) Comprehensive Observations and Interpretations in Al-Rich Interstitial-Free High-Strength Steel via Process-Induced Structure Evolution. Journal of Materials Engineering and Performance. ISSN 1059-9495

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Abstract

Developing ND parallel to< 111 > fiber texture is vital for assessing the properties of interstitial-free high-strength steels utilized in the automotive industry. The present work deals with the microstructure and texture evolution in titanium-niobium-stabilized interstitial-free high-strength steels with varied aluminum content. Industrially hot-rolled steels with different aluminum content (0.045 and 0.12 wt.%) were cold-rolled (similar to 90%) and isothermally annealed at 650 and 750 degrees C for multiple time intervals. Texture studies showed a similarly weak hot band textures. After annealing, a stronger {111} recrystallization texture was observed in high-Al steel than in low-Al steel. High-Al steel depicted faster recrystallization than that of low-Al steel. In the early stages of recrystallization, a variation in the recrystallization behavior of the steels was observed. The presence of the strain-induced boundary migration at the beginning of annealing triggered recrystallization of 10011 <110 > grains and caused sluggish recrystallization of {111} < uvw > grains in low-Al steel. In contrast, the rapid recovery of {111} fiber grains hindered the effect of strain-induced boundary migration in high-Al steel. It resulted in faster recrystallization of {111} < uvw > and stronger {111} fiber texture. A higher annealing temperature and grain growth further strengthened the {111} fiber texture in both steels.

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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 gratefully acknowledge Tata Steel Limited, Jamshedpur, India, for providing the funding and materials for the research work. The authors have acquired all the EBSD data from a FEG-SEM procured through a DST-FIST grant (SR/FST/ETI-421/2016).

Uncontrolled Keywords:

ANNEALING TEXTURE,IF-STEEL,NB

Subjects:

Materials Engineering > Materials engineering

Divisions:

Department of Material Science Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

30 Sep 2022 09:25

Last Modified:

30 Sep 2022 09:25