1 results listed
SAE 4140 steel or 42CrMo4 is widely used in
automotive industry (parts of steering wheel, parts of suspension,
etc.) as forged parts due to its high strength, different fatigue
behaviors, and good machinability properties. In this study, the
effect of post-forging heat treatment process was examined.
Different heat treatment routes were applied to 4140 steel,
following hot forging. Microstructure and mechanical properties
including fatigue strength were determined. Microstructures of
the forged changed regard as cooling rate and martensitic and
martensitic/bainitic structures were observed. While the sample
forged and then quenched in air has shown the highest tensile
strength and fatigue cycle, optimum properties were obtained
with the sample as forged-quenched in air-tempered, and forgedaustenitizing-quenched-tempered conditions
International Iron & Steel Symposium
UDCS
Ahmet Asım Eser
Mehmet Ali Güvenç
Seracettin Akdı
Mustafa ACARER