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Effect of High Tensile Strain Rate on the Evolution of Microstructure in Fe-Mn-C-Al Twinning-Induced Plasticity (TWIP) Steel

IR@NML: CSIR-National Metallurgical Laboratory, Jamshedpur


Field	Value

Title	Effect of High Tensile Strain Rate on the Evolution of Microstructure in Fe-Mn-C-Al Twinning-Induced Plasticity (TWIP) Steel

Creator	Das, Tuhin Saha, Rajib Bera, Supriya Dahmen, Kirsten Ghosh, M Haldar, A Bleck, Wolfgang Ghosh Chowdhury, S

Subject	Materials Science

Description	Fe-17.8Mn-0.52C-0.5Al TWIP steel has been investigated under high-strain rate conditions. Twinning along with stacking faults and high dislocation densities in the austenite matrix has been evaluated by X-ray diffraction line profile analysis and transmission electron microscopy. The samples strained at 100 s(-1) show a gradient in the evolution of the dislocation density along the gage length except the fracture end where the density shows a decrease. In case of the samples strained at 1 s(-1), the evolution of density shows attainment of a near-saturation stage. Electron backscatter diffraction analysis shows that the decrease in the dislocation density as well as near-saturation stage is due to dynamic recovery as well as dynamic recrystallization at region near the fracture end. The dynamically recrystallized grains are related to the deformed matrix through twin relationship.

Publisher	Springer

Date	2015-01

Type	Article PeerReviewed

Format	application/pdf

Identifier	http://eprints.nmlindia.org/7216/1/DasTuhin-2015.pdf Das, Tuhin and Saha, Rajib and Bera, Supriya and Dahmen, Kirsten and Ghosh, M and Haldar, A and Bleck, Wolfgang and Ghosh Chowdhury, S (2015) Effect of High Tensile Strain Rate on the Evolution of Microstructure in Fe-Mn-C-Al Twinning-Induced Plasticity (TWIP) Steel. Metallurgical and Materials Transactions A, 46A (1) (IF-1.749). pp. 6-11.

Relation	http://link.springer.com/article/10.1007%2Fs11661-014-2654-x http://eprints.nmlindia.org/7216/