Results 31 to 40 of about 297 (137)

Adjusting Mechanical Properties of Forging Dies Produced by Ausforming

open access: yes, 2021
Due to high thermo-mechanical loads, tools used in hot forming operations need a high resistance to different damage phenomena, such as deformation, cracking and abrasion.
Behrens, Bernd-Arno   +4 more
core   +1 more source

Effects of ausforming temperature on carbide-free bainite transformation and its correlation to the transformation plasticity strain in a medium C- Si-rich steel

open access: yes, 2022
Ausforming treatments at different temperatures were applied to a medium C[sbnd]Si rich carbide free bainitic steel, and the role of transformation plasticity on the evolution of the microstructure is discussed.
García Mateo, Carlos   +2 more
core   +1 more source

Effect of Ausforming on the Macro- and Micro-texture of Bainitic Microstructures [PDF]

open access: yes, 2021
The reason why variant selection phenomena occur in ausforming treatments is still not known. For that reason, in this work, the effect of compressive deformation on the macro and micro-texture of a bainitic microstructure was analyzed in a medium-carbon
Adriana Eres-Castellanos   +11 more
core   +1 more source

The role of plastic strains on variant selection in ausformed bainitic microstructures studied by finite elements and crystal plasticity simulations

open access: yesJournal of Materials Research and Technology, 2021
The mechanisms driving variant selection phenomena in ausformed bainitic microstructures are not fully controlled yet. Previous results are not congruent among them, as they cannot be explained by the same rule.
Adriana Eres-Castellanos   +4 more
doaj   +1 more source

Microstructural evolution during tempering of an ausformed carbide-free low temperature bainitic steel

open access: yesMaterials & Design, 2021
The influence of tempering at 400 and 500 °C on two bainitic ferrite microstructures obtained via pure isothermal transformation and ausforming followed by the isothermal transformation was studied in a medium C-Si rich bainitic steel.
M. Zorgani, C. Garcia-Mateo, M. Jahazi
doaj   +1 more source

Effect of ausforming strain on martensite start temperature

open access: yes, 2015
Ausforming is generally believed to decrease the martensite start (Ms) temperature. However, the present experiment found that Ms temperature firstly increased at small strain and then decreased at large strain. This interesting finding may be explained by the competing role of dislocation played in martensitic transformation.
Huang, M, He, B, Xu, W
openaire   +2 more sources

Understanding and improving thermodynamic stability of austenite in low carbon carbide free bainitic steels via ausforming process

open access: yes, 2023
Carbide-free bainitic (CFB) steel has become a new forefront of advanced high-strength steels owing to their outstanding balance in mechanical properties.
Kumnorkaew, Theerawat
core   +1 more source

Transferring Nanoscale Bainite Concept to Lower C Contents: A Perspective

open access: yesMetals, 2017
The major strengthening mechanisms in bainitic steels arise from the bainitic ferrite plate thickness rather than the length, which primarily determines the mean free slip distance.
Carlos Garcia-Mateo   +7 more
doaj   +1 more source

Assessing the scale contributing factors of three carbide-free bainitic steels: A complementary theoretical and experimental approach

open access: yesMaterials & Design, 2021
The bainitic ferrite plate thickness is the main parameter that controls the strength of this type of microstructures. Such thickness has been proved to mainly depend on the austenite yield strength, the driving force for the transformation and the ...
Adriana Eres-Castellanos   +6 more
doaj   +1 more source

Kinetic Model of Isothermal Bainitic Transformation of Low Carbon Steels under Ausforming Conditions

open access: yes, 2022
Carbide-free bainitic steels show attractive mechanical properties but are difficult to process because of the sluggish phase transformation kinetics. A macroscopic model based on the classical nucleation theory in conjunction with the modified Koistinen&
Junhe Lian   +3 more
core   +1 more source

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