A synchrotron X-ray diffraction study on the phase transformation kinetics and texture evolution of a TRIP steel subjected to torsional loading

Ercan Cakmak; Hahn Choo; Ke An; Yang Ren

doi:10.1016/j.actamat.2012.08.040

A synchrotron X-ray diffraction study on the phase transformation kinetics and texture evolution of a TRIP steel subjected to torsional loading

Ercan Cakmak, Hahn Choo, Ke An, Yang Ren

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46 Scopus citations

Abstract

The martensitic phase transformation kinetics and the relation with texture evolution in the constituent phases were studied for a transformation-induced plasticity (TRIP) steel under a torsional loading condition at ambient temperature. Synchrotron X-ray diffraction was used to measure the evolution of phase fractions and texture in terms of pole figures and orientation distribution functions as a function of the applied shear strain. The effects of deformation texture development in the parent austenite phase on the observed phase transformation kinetics are discussed in terms of preferred transformation mechanisms. The texture evolution in the product martensite phase is also discussed in terms of possible texture inheritance from the parent austenite phase and its own deformation texture.

Original language	English
Pages (from-to)	6703-6713
Number of pages	11
Journal	Acta Materialia
Volume	60
Issue number	19
DOIs	https://doi.org/10.1016/j.actamat.2012.08.040
State	Published - Nov 2012
Externally published	Yes

Funding

This research was supported in part by the NSF Major Research Instrumentation program under contract DMR.0421219. Use of the Advanced Photon Source was supported by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy, under contract no. DE-AC02-06CH11357. The work at Oak Ridge National Laboratory was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy. The authors would like to acknowledge Mr. Harley Skorpenske (Oak Ridge National Laboratory) for his help using the load frame and Mr. Douglas Fielden (University of Tennessee) for machining the specimens.

Funders	Funder number
Scientific User Facilities Division
National Science Foundation	DMR.0421219
U.S. Department of Energy	DE-AC02-06CH11357
Basic Energy Sciences

Keywords

Martensitic phase transformation
Synchrotron diffraction
Texture evolution
Torsional deformation
Transformation kinetics

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10.1016/j.actamat.2012.08.040

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AU - Ren, Yang

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AB - The martensitic phase transformation kinetics and the relation with texture evolution in the constituent phases were studied for a transformation-induced plasticity (TRIP) steel under a torsional loading condition at ambient temperature. Synchrotron X-ray diffraction was used to measure the evolution of phase fractions and texture in terms of pole figures and orientation distribution functions as a function of the applied shear strain. The effects of deformation texture development in the parent austenite phase on the observed phase transformation kinetics are discussed in terms of preferred transformation mechanisms. The texture evolution in the product martensite phase is also discussed in terms of possible texture inheritance from the parent austenite phase and its own deformation texture.

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A synchrotron X-ray diffraction study on the phase transformation kinetics and texture evolution of a TRIP steel subjected to torsional loading

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