Correlation between Optimal Quenched Layer, Stress Distribution and Chemical Composition for Low- Hardenability Steels

摘要

In this paper there is a discussion of the correlation between optimal quenched layer, optimal stress distribution and chemical composition for low-hardenability steels. Optimal quenched layer provides maximal compressive residual stresses at the surface of low-hardenability steels and medium tensile residual stresses at the core. In addition, it is explained why quenched gears have a different value for residual stresses along the surface. It is shown that intensive quenching of the gears made of low - hardenability steels, with an optimized quenched layer, can significantly increase service life of products and improve the environment since intensive quenching uses plain water as a quenchant instead of oil.