The mechanical behavior and wear of the different hardened phases with bore-induced changes in AISI 4340 D2 steels were investigated. hardness modulus elasticity measured by nanoindentation values obtained for layers steel 18 GPa 325 Fe2B boride phase, 20 360 FeB respectively. presented mainly phase. It was then possible to analyze coefficient friction phase a range 0.04 0.06. presents two laye...

In this study, sinterability of WC-9% Co component with AISI 4340 steel insert was investigated using Inserted Powder Injection Molding (IPIM) method. Sintering experiments were performed at temperatures 1200 °C to 1350 dwell times 120, 240, 360 min. Defects such as gaps, cracks and macro-porosities observed in specimens, sintered 1250 for all times. It proved that sintering temperature high it...

During quenching heat treatment, the formation of high residual stress values and presence distortion are phenomena which difficult to control accurately predict, their effects being extremely important components or pieces complex robust geometry that commonly used in industry. The latter is mainly due mixture temperature levels formed between surface cores martensitic transformation during qu...