Analysis of phase transformation in high strength low alloyed steels

[摘要] The effect of low-alloy additions on phase transformation of high strength low alloyed steels is reported. Various as-quenched materials with microstructures consisting of low carbon (granular) bainitic, mixed bainitic/martensitic and fully martensitic microstructures were reproduced in laboratory. Results show that for a given cooling rate, an increase of austenite grain size (AGS) and of Mo and Cr contents decreases the transformation temperatures and promotes martensite formation.

[学科分类] 金属与冶金

[关键词] high strength low alloyed steels;quenching;hardness;microstructure