Strain Induced Martensitic Transformations in two Austenitic Stainless Steels: Macro-Micro Behaviour

摘要

Two grades of austenitic stainless steels, AISI 301LN and AISI 201, were monotonically tested under uniaxial tension, shear and deep drawing over a wide temperature range [-150°C; +150°C] and a wide strain rate range [3.10~(-4) s~(-1); 200 s~(-1)]. Non monotonic loadings were also performed to study the strain path dependence on phase transformation, mechanical behaviour and microstructures. TEM examinations were used for microstructural observations and SEM for fractographic analysis. Correlations between transformations micromechanisms and macroscopic properties were established.