steel research international

Orientation dependence was shown using EBSD technique to influence the transformation kinetics, variant selection, the sizes, and orientations of new grains in high manganese TRIP steels. This phenomenon is ascribed to the influence of Schmid factor and strain accommodation in different deformation conditions. Thus deformation can be used to acquire a totally different structure to that of thermally induced martensite.

The oxygen content can be reduced to the lowest (12 ppm) only when protective Ar gas remelting in combination with specially designed slag deoxidation treatment were employed simultaneously during ESR process. Only pure Al₂O₃ inclusions of about 1 µm in size were observed in ESR ingot. The mechanisms of oxygen behavior and control together with inclusion evolution during ESR process were proposed.

Due to their favorable combination of strength, toughness, and corrosion resistance precipitation hardening stainless steels are widely employed. To evaluate costs and effects of metallurgical processing and heat treatment the two steels 1.4542 and 1.4545 are compared regarding their microstructure and resulting mechanical properties. The analysis leads to a deeper understanding of how purity and microstructural constituents may impair strength, elongation, and toughness behavior.