Sep 25, 2018 · A Coupled thermo-mechanical finite element model was employed to simulate the possible effects of varying laser scanning parameters on the surface hardening process for AISI 1045 and AISI 4140 steels. 4130 and 4140 Heat Treatments - Industrial HeatingJun 08, 2011 · For 4140 steel, the recommended heat treatment  consists of heating to austenitizing temperature, typically 1570°F (855°C), followed by oil quenching. Tempering (reheating after quenching) will achieve the desired hardness range. From available data for an oil quenched, ½-inch-diameter round part, you will need to temper at (approximately
6. 4140 alloy steel Heat treatment. Annealing AISI 4140 alloy steel is annealed at 872°C (1600°F) followed by slowly cooling in the furnace. Tempering AISI 4140 alloy steel can be tempered at 205 to 649°C (400 to 1200°F) depending upon the desired hardness level. The hardness of the steel can be increased if it has lower tempering temperature. AISI A2 DATA SHEET TEMPERING - The Steel StoreAISI A2 DATA SHEET AISI A2 is an air-or oil chromium molybdenum vanadium tool steel. Typical C Si Mn Cr Mo V analysis % 1.0 0.3 0.6 5.3 1.1 0.2 Delivery condition Soft annealed approx. 215 HB Color code Red/Green APPLICATIONS AISI A2 offers an excellent combination of good wear resistance and toughness. It may be EFFECTS OF VARIOUS HEAT TREATMENT PROCEDURES Double quenching and tempering in the range of 600-900 as well as full annealing at around 860 were found to be resulting with the highest toughness values. A proposal was also made for furtherly improving the toughness values of these heat-treated samples. Keyword:Maximum toughness, heat treatment, AISI 4140 steel. 1.Introduction 1.1.
Tensile strength values of AISI 4140 steel samples, austenitized at 900°C, 880°C and 860°C,quenched in oil and tempered at 640°C, 570°C and 480°C are shown in Fig 4. As shown on Fig 4. AISI 4140 steel which has been austenitized at 900°C for 140 mins after having been quenched in oil, has the average tensile strength value of 6 MPa. Effect of Heat Treatments on the Mechanical and Jul 10, 2019 · Tempering of AISI 4140 steel at 400 °C results in significant improvement in tensile strength (1583 MPa), elongation (7%) and reduction in area (45%) compared to quenched steel which is due to the diffusion of excess carbon from martensite into austenite and secondary phase particles, and interaction of secondary phase carbides with dislocation as previously described by Kang et al. . The behavior of 38CrSi steel after quenching and tempering (QT) was similar to AISI 4140 for tensile Mechanisms of tempered martensite embrittlement in during tempering, and was historically associated with an increase in intergranular fracture during failure.5-8 Fracture toughness and tensile ductility were also seen
-- Abstract:This investigation is concerned to evaluate the effect of double quenching and tempering (DQT) with conventional quenching and tempering (CQT) heat treatment processes on microstructure and mechanical behavior of a commercially developed hot rolled AISI 4140 type steel. Effects of Tempering AISI 4140 Steel in Double-Angle Note:This project is part of a much broader researcher in which two goals were involved throughout the process. The first goal is to investigate the effects of single versus double tempering on the mechanical properties and microstructure of 4140 steel described on the Metallurgical Investigation of the Effects of Double Tempering on the Hardness, Impact Toughness and Microstructure of