The present work evaluated the tempering temperature influence on microstructure, mechanical properties, and residual stresses of AISI 4340 steel. were measured by X-ray diffraction (XRD) sin2ψ method compared to magnetic Barkhausen noise (MBN). exhibited high tensile values after quenching, but a small relief was observed in treatments at 300 °C 400 °C, which also presented hardness decrease a...

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...

The aim of this paper was to study the effects of die life through shot peening treatments on AISI H13 steel, and tests were performed to study the influential parameters of the shot peening process. To evaluate the effects of microstructure and the die life of AISI H13 steel after steel shot peening processes, we conducted and evaluated roughness tests, micro hardness and wear tests, and SEM m...

In the present study, the effects of the boriding process on adhesion and tribological properties of AISI 310 steel were investigated. Boriding was performed in a solid medium consisting of Ekabor-II powders at 1123 and 1323K for 2 and 6 h. The boride layer was characterized by optical microscopy, the X-ray diffraction technique and the micro-Vickers hardness tester. The X-ray diffraction analy...

In this study, 39 sets of hard turning (HT) experimental trials were performed on a Mori-Seiki SL25Y (4-axis) computer numerical controlled (CNC) lathe to study the effect of cutting parameters in influencing the machined surface roughness. In all the trials, AISI 4340 steel workpiece (hardened up to 69 HRC) was machined with a commercially available CBN insert (Warren Tooling Limited, UK) unde...

N. Annamalai, V. Sivaramakrishnan, B. Suresh kumar, N.Baskar Department of Mechanical Engineering, Mookambigai College of Engineering, Pudukkottai, Tamilnadu, India – 622502 [email protected] * Department of Mechanical Engineering, Roever Engineering College, Perambalur, Tamilnadu, India – 621212 [email protected] #3,*4 Department of Mechanical Engineering, M. A. M. College of Engineeri...