Retained Austenite in the C.G.H.A.Z. of 0.1 wt% C Si-alloyed Steels
نویسندگان
چکیده
منابع مشابه
Characterization of individual retained austenite grains and their stability in low-alloyed TRIP steels
In situ three-dimensional (3-D) X-ray diffraction experiments have been performed at a synchrotron source on low-alloyed multiphase TRIP steels containing 0.25 wt.% Si and 0.44 wt.% Al and produced with different bainitic holding times, in order to assess the influence of the bainitic transformation on the thermal stability of individual austenite grains with respect to their martensitic transf...
متن کاملHigh-energy X-ray diffraction study on the temperature-dependent mechanical stability of retained austenite in low-alloyed TRIP steels
The stability of the retained austenite has been studied in situ in low-alloyed transformation-induced-plasticity (TRIP) steels using high-energy X-ray diffraction during tensile tests at variable temperatures down to 153 K. A detailed powder diffraction analysis has been performed to probe the austenite-to-martensite transformation by characterizing the evolution of the phase fraction, load pa...
متن کاملMicrostructural control of the austenite stability in low-alloyed TRIP steels
We have performed in-situ magnetization and high-energy X-ray diffraction measurements on two aluminum-based TRIP steels from room temperature down to 100 K in order to evaluate amount and stability of the retained austenite for different heat treatment conditions. We have found that the bainitic holding temperature affects the initial fraction of retained austenite at room temperature but does...
متن کاملMechanical Stability of Retained Austenite in the Nanostructured, Carbide Free Bainitic Steels During Tensile Testing and Cold Rolling Process
Terms of service of the steels with retained austenite in the microstructure, is severely depended on the stability of austenite during the course of deformation. The present work aims to evaluate the mechanical stability of austenite in nanostructured, carbide free bainitic steels during tensile testing and cold rolling process. To achieve the microstructure with retained austenite, the steel ...
متن کاملDiffusion of carbon in substitutionally alloyed austenite
where k and h are the Boltzmann and Planck constants, respectively, W is the number of octahedral interstices around a single such interstice, ~F* is an activation free energy, r m is an activity coefficient and), is the distance betwe-en (002) austenite planes. <1'= 1exp(-wy/kT); Wy is the nearest neighbour carbon-carbon interaction energy in austenite. () is the ratio of the number of carbon ...
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ژورنال
عنوان ژورنال: Le Journal de Physique IV
سال: 1996
ISSN: 1155-4339
DOI: 10.1051/jp4:1996124