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Bainite
About: Bainite is a research topic. Over the lifetime, 9520 publications have been published within this topic receiving 145305 citations.
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TL;DR: In this paper, dilatometric measurements were reported to confirm the earlier metallographic observations and include an interpretation of the effect of prestrain on the martensite that forms from the carbon enriched residual austenite that remains after bainite.
Abstract: Metallographic observations have in the past demonstrated conclusively that the bainite transformation is susceptible to mechanical stabilisation. This means that the growth of bainite can be hindered when the transformation occurs in austenite which is plastically deformed, although the rate of heterogeneous nucleation may be accelerated. In the present work we report dilatometric measurements to confirm the earlier metallographic observations and include an interpretation of the effect of prestrain on the martensite thatformsfrom the carbon enriched residual austenite that remains after bainite.MST/3616
52 citations
TL;DR: In this article, a "disturbed" bainitic austempering process was employed in a Mn-Si-Cr-C low-alloyed steel to reduce the fraction and size of the blocky martensite/austenite (M/A) islands.
52 citations
TL;DR: In this paper, the fracture toughness of quenched and tempered steels such as AISI 4340, AisI 4130 and 300M can be increased by 50-100% by minor changes in heat treating procedures.
52 citations
TL;DR: In this article, the effects of transformation temperature and carbon content on variant selection of bainite structure in Fe-2mass%Mn-C alloys with carbon content ranging from 0.2 to 0.75 mass% were investigated at transformation temperatures between 673 and 773 K.
52 citations
30 Jul 2012-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the effect of hot deformation on the driving force of ferrite transformation was theoretically analyzed based on the 22MnB5 steel, and the effects of deformation temperature, strain amount, strain rate and cooling rate on the Ferrite transformation were also investigated.
Abstract: The effect of austenite deformation on ferrite transformation and bainite transformation is reviewed in this paper. In the ferrite zone on continuous cooling transformation (CCT) diagram of 22MnB5 steel, isothermal tensile tests were carried out in various deformation conditions on Gleeble 3800 thermo-mechanical machine, and microstructures were observed. The influence of hot deformation on the driving force of ferrite transformation was theoretically analyzed based on the 22MnB5 steel. The effects of deformation temperature, strain amount, strain rate and cooling rate on the ferrite transformation of the 22MnB5 steel were also investigated. The ferrite transformation of the 22MnB5 is induced by isothermal deformation and the incubation period is significantly shortened. Below the start temperature of bainite transformation ( B s ), isothermal tensile tests and microstructure observation were performed. The effects of deformation temperature and strain amount on the bainite transformation of the 22MnB5 steel were investigated. The isothermal deformation below B s promotes the bainite transformation obviously, while the hot deformation above the B s promoting the bainite transformation is not observed in the investigated testing conditions.
52 citations