A Computational Design of UHS Maraging Stainless Steels Incorporating Composition as well as Austenitisation and Ageing Temperatures as Optimisation Parameters

Wei Xu (1, 2) , P.E. J. Rivera-Diaz-Del-Castillo (2) , Sybrand van Der Zwaag (2)

1 Materials Innovation Institute M2i
2 Fundamentals of Advanced Materials Group, Faculty of Aerospace Engineering

An extended integral alloy design approach for the development of new ultra high strength maraging steels is presented which incorporates not only chemical composition effects but also criteria accounting for the influence of the entire heat treatment. The approach accounts for the desired strengthening precipitates formed during the final ageing treatment as well as undesirable equilibrium phases present during the preceding high temperature homogenisation treatment. The results are compared with the predictions of a previous model which accounted for the combination of composition and the final precipitation tempering stage only.

Mots clés: Physical Sciences

Wei Xu, P.E. J. Rivera-Diaz-Del-Castillo, Sybrand van Der Zwaag. A Computational Design of UHS Maraging Stainless Steels Incorporating Composition as well as Austenitisation and Ageing Temperatures as Optimisation Parameters. Philosophical Magazine, 2009, 89 (20), pp.1647-1661. ⟨10.1080/14786430903019081⟩. ⟨hal-00514027⟩