This study is concerned with a correlation between the microstructure and mechanical properties of 42CrMo4 steel which was subjected quenched-tempered and step-quenching heat treatment. Quench tempering and step quenching heat treatment produced a tempered martensite and an equiaxed Ferrite-Bainite-Martensite (F-B-M) microstructure, respectively. Tensile test results indicated a yield drop effect in F-B-M microstructure with ferritic matrix. This effect was not observed on the specimens with tempered martensite and F-B-M microstructure with hard phase B-M matrix. This effect can be attributed to dislocation generation in ferrite phase during bainitic and martensitic transformations. Fractographic investigations indicated intergranular cleavage in F-B-M microstructure and micro-void coalescence in tempered martensite microstructure can be attributed to carbide formation in martensitic structure during tempering micro-void coalescence in tempered martensite microstructure
Salemi,A , Abdollah,, A and Mirzaee,M . (2010). An Investigation on Mechanical Properties of 42CrMo4 Steel with Tempered Martensite and Ferrite-Bainite-Martensite Microstructure. Modares Mechanical Engineering, 10(1), 63-76.
MLA
Salemi,A , , Abdollah, A , and Mirzaee,M . "An Investigation on Mechanical Properties of 42CrMo4 Steel with Tempered Martensite and Ferrite-Bainite-Martensite Microstructure", Modares Mechanical Engineering, 10, 1, 2010, 63-76.
HARVARD
Salemi A, Abdollah , A, Mirzaee M. (2010). 'An Investigation on Mechanical Properties of 42CrMo4 Steel with Tempered Martensite and Ferrite-Bainite-Martensite Microstructure', Modares Mechanical Engineering, 10(1), pp. 63-76.
CHICAGO
A Salemi, , A Abdollah and M Mirzaee, "An Investigation on Mechanical Properties of 42CrMo4 Steel with Tempered Martensite and Ferrite-Bainite-Martensite Microstructure," Modares Mechanical Engineering, 10 1 (2010): 63-76,
VANCOUVER
Salemi A, Abdollah , A, Mirzaee M. An Investigation on Mechanical Properties of 42CrMo4 Steel with Tempered Martensite and Ferrite-Bainite-Martensite Microstructure. Modares Mechanical Engineering. 2010;10(1):63-76 (In Persian).
