Neutron diffraction analysis of retained austenite stability in Mn–Si steel during plastic deformation

The precise characterization of the multiphase microstructure of low alloyed TRIP steels is of great importance for the interpretation and optimisation of their mechanical properties. In-situ neutron diffraction experiment was employed for monitoring of conditioned austenite transformation to ferrite, and also for retained austenite stability evaluation during subsequent mechanical loading. The progress in austenite decomposition to ferrite is monitored at different transformation temperatures. The relevant information on the course of transformation is extracted from neutron diffraction spectra. The integrated intensities of austenite and ferrite neutron diffraction profiles over the time of transformation are then assumed as a measure of the volume fractions of both phases in dependence on transformation temperature. Useful information was also obtained on retained austenite stability in TRIP steel during mechanical testing. The in-situ neutron diffraction experiments were conducted at two different diffractometers to assess the reliability of neutron diffraction technique in monitoring the transformation of retained austenite during room temperature tensile test. In both experiments the neutron investigation was focused on the volume fraction quantification of retained austenite as well as on internal stresses rising in structure phases due to retained austenite transformation.

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Retained austenite stability investigation in TRIP steel using neutron diffraction

Materials Science and Engineering A ◽

10.1016/j.msea.2006.04.067 ◽

2006 ◽

Vol 437 (1) ◽

pp. 114-119 ◽

Cited By ~ 20

Author(s):

J. Zrník ◽

O. Muránsky ◽

P. Lukáš ◽

Z. Nový ◽

P. Sittner ◽

...

Keyword(s):

Neutron Diffraction ◽

Trip Steel ◽

Retained Austenite ◽

Stability Investigation ◽

Austenite Stability ◽

Retained Austenite Stability

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In-situ Neutron Diffraction Analysis of Crystal Plasticity of Retained Austenite in Bearing Steel

Procedia Engineering ◽

10.1016/j.proeng.2017.10.968 ◽

2017 ◽

Vol 207 ◽

pp. 1958-1963 ◽

Cited By ~ 2

Author(s):

Vikram Bedekar ◽

Rohit Voothaluru ◽

Qingge Xie ◽

Alexandru Stoica ◽

R. Scott Hyde ◽

...

Keyword(s):

Neutron Diffraction ◽

Diffraction Analysis ◽

Crystal Plasticity ◽

Retained Austenite ◽

Bearing Steel ◽

Neutron Diffraction Analysis ◽

In Situ Neutron Diffraction

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The Classical Structure of TaCp2(H)(SiMe2H)2

Journal of Chemical Research ◽

10.1177/174751989902300113 ◽

1999 ◽

Vol 23 (1) ◽

pp. 14-15

Author(s):

Ichiro Tanaka ◽

Takashi Ohhara ◽

Nobuo Niimura ◽

Yuji Ohashi ◽

Qian Jiang ◽

...

Keyword(s):

Neutron Diffraction ◽

Diffraction Analysis ◽

Neutron Diffraction Analysis ◽

Classical Structure ◽

R Factor ◽

Symmetric Structure ◽

Hydride Ligand

Neutron diffraction analysis of TaCp2(H)(SiMe2H)2 (1) has revealed a symmetric structure with a classical, rather than agostic, hydride ligand: the Ta–H distance is 1.785(15) Å, the non-bonding H···Si distances are 2.189(18) and 2.190(17) Å, and the H–Ta–Si angles are 55.2(5) and 55.5(5)°; final R factor = 8.9% for 1295 reflections.

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