Materials, Год журнала: 2025, Номер 18(5), С. 1092 - 1092

Опубликована: Фев. 28, 2025

The formation of surface austenite leads to microstructural changes, causing grinding hardening. However, the effect mechanical stresses on austenitization remains unclear. Additionally, properties metamorphic layer are crucial for studying Therefore, in this study, evolution microstructure and corresponding 8Cr4Mo4V steel was analyzed. characterized using scanning electron microscopy (SEM) transmission (TEM). Physical simulation employed analyze compressive stress transformation start temperature (Ac1). Dimensionless analysis, based nanoindentation results, conducted study layer. consists martensite, retained austenite, undissolved carbides. unresolved carbides distributed within cryptocrystalline martensite. Increasing depth workpiece feed speed results higher temperature, which a reduction Ac1 content austenite. yield strength is 2427 MPa, 427 MPa than that matrix, indicating obvious

Язык: Английский