D-84 Observations of Retained Austenite Stability and Stress Partitioning in Transformation-Induced Plasticity Steel During in Situ Tensile Testing Using Synchrotron X-ray Diffraction

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.

Download Full-text

Study of texture effect on elastic properties of Au thin films by X-ray diffraction and in situ tensile testing

Acta Materialia ◽

10.1016/j.actamat.2006.05.036 ◽

2006 ◽

Vol 54 (17) ◽

pp. 4503-4513 ◽

Cited By ~ 53

Author(s):

D. Faurie ◽

P.-O. Renault ◽

E. Le Bourhis ◽

Ph. Goudeau

Keyword(s):

Thin Films ◽

Elastic Properties ◽

Tensile Testing ◽

X Ray Diffraction ◽

X Ray ◽

Texture Effect ◽

Au Thin Films ◽

In Situ Tensile Testing

Download Full-text

Stress partitioning among ferrite, martensite and retained austenite of a TRIP-assisted multiphase steel: An in-situ high-energy X-ray diffraction study

Materials Science and Engineering A ◽

10.1016/j.msea.2018.04.066 ◽

2018 ◽

Vol 726 ◽

pp. 1-9 ◽

Cited By ~ 17

Author(s):

Chenghao Song ◽

Hao Yu ◽

Jun Lu ◽

Tao Zhou ◽

Shufeng Yang

Keyword(s):

Diffraction Study ◽

Retained Austenite ◽

High Energy ◽

X Ray Diffraction ◽

X Ray ◽

Stress Partitioning ◽

Multiphase Steel

Download Full-text

Effect of Different Coiling Temperature on Mechanical Properties in Hot Rolled TRIP Steel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.239-242.1092 ◽

2011 ◽

Vol 239-242 ◽

pp. 1092-1095

Author(s):

Xu Tao Gao ◽

Ai Min Zhao ◽

Zheng Zhi Zhao ◽

Ming Ming Zhang ◽

Di Tang

Keyword(s):

Mechanical Properties ◽

Retained Austenite ◽

X Ray Diffraction ◽

Coiling Temperature ◽

Experimental Steel ◽

Transformation Induced Plasticity ◽

X Ray ◽

Trip Steels ◽

Hot Rolled ◽

Scanning Electron

By means of optical microscopy(OM), scanning electron microscopy(SEM),X-ray diffraction(XRD),And tensile test, Mechanical Properties of hot rolled transformation -induced plasticity (TRIP) steels which were prepared through three different coiling temperature was investigated. Result reveals that the formability index of the experimental steel descends when the coiling temperature becomes low. Different coiling temperature has greater impact on retained austenite. Amount and carbon content of retained austenite in the experimental steel get less with lower coiling temperature.

Download Full-text

In-Situ Characterization by High-Energy X-ray Diffraction of the Phase Transformations Leading to Transformation-Induced Plasticity-Aided Bainitic Steel

Quantum Beam Science ◽

10.3390/qubs3040025 ◽

2019 ◽

Vol 3 (4) ◽

pp. 25

Author(s):

Zélie Tournoud ◽

Frédéric De Geuser ◽

Gilles Renou ◽

Didier Huin ◽

Patricia Donnadieu ◽

...

Keyword(s):

Carbon Content ◽

Phase Transformations ◽

High Energy ◽

Heat Treatments ◽

Treatment Temperature ◽

Bainitic Steel ◽

X Ray Diffraction ◽

Transformation Induced Plasticity ◽

X Ray

The phase transformations occurring during the heat treatments leading to transformation-induced plasticity (TRIP)-aided bainitic steel have been investigated in-situ by high-energy X-ray diffraction (HEXRD) conducted with synchrotron light at 90 keV. Direct microstructure characterization has been performed by electron microscopy using electron backscatter diffraction and orientation and phase mapping in a transmission electron microscope. HEXRD data allow the quantification of the evolution of the austenite phase fraction with the heat treatments, as well as its carbon content and the fraction of carbides, from the lattice parameter evolution. It is shown that different combinations of austenite fraction and carbon content can be reached by adjusting the heat treatment temperature.

Download Full-text