Matériaux & Techniques
Volume 77, Number 7-8, 1989
|Page(s)||49 - 55|
|Published online||19 April 2017|
Contribution à l'étude du traitement d'austénoformage d'aciers au niecel-chrome-molybdène
Contribution to the study of Ni-Cri-Mo steels ausforming treatment
Among possible thermomechanical treatments, ausforming consits in the plastic deformation of the metastable austenite, for steels — like grade 35NCDI6 — with a wide space between perlitic and bainitic transformation domains in the TTT diagram (time, temperature, transformation rate).
The deformation is obtained by forging, hammering or rolling. Mechanical properties can be improved up to a 2300 MPa UTS, with a 10 % elongation and a 80 MPa√m toughness. A well-known steel offers properties of a new material.
© SIRPE 1989
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