Effect of thermomechanical processing on the microstructure and retained austenite stability during in situ tensile testing using synchrotron x-ray diffraction of NbMoAI TRIP steel.
- X-Ray Science Division
In this work we compare and contrast the stability of retained austenite during tensile testing of Nb-Mo-Al transformation-induced plasticity steel subjected to different thermomechanical processing schedules. The obtained microstructures were characterised using optical metallography, transmission electron microscopy and X-ray diffraction. The transformation of retained austenite to martensite under tensile loading was observed by in-situ high energy X-ray diffraction at 1ID / APS. It has been shown that the variations in the microstructure of the steel, such as volume fractions of present phases, their morphology and dimensions, play a critical role in the strain-induced transition of retained austenite to martensite.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); Commonwealth of Australia; Univ. fo Wollongong
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 1019259
- Report Number(s):
- ANL/XSD/JA-70523; TRN: US201114%%729
- Journal Information:
- Solid State Phenomena, Vol. 172-174, Issue Jun. 2011
- Country of Publication:
- United States
- Language:
- ENGLISH
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