Affiliation:
1. Department of Machine and Manufacturing, Isparta University of Applied Sciences, Turkey
2. Department of Physics, Suleyman Demirel University, 32260, Isparta, Turkey
Abstract
Purpose: In this study, the effect of heat treatment on the microstructure and mechanical
properties of 42CrMo4 steel were investigated.
Design/methodology/approach: The samples were annealed at 860°C for 120 min.
followed by oil quenching and then tempered at temperatures between 480 and 570°C
for 120 min. The microstructure of untreated 42CrMo4 steel mainly consists of pearlite
and ferrite whereas the microstructure was found to be as a martensitic structure with a
quenching process.
Findings: The results showed that there is an increase in yield stress, ultimate tensile
stress, hardness and impact energy, while elongation decreases at the end of the quenching
process. Conversely, yield stress, ultimate tensile stress and hardness decrease slightly with
the increasing of tempering temperature, while elongation and impact energy increase.
Research limitations/implications: Other types of steels can be heat treated in a wider
temperature range and the results can be compared.
Practical implications: It is a highly effective method for improving the mechanical
properties of heat treatment materials.
Originality/value: A relationship between the mechanical properties and the microstructure
of materials can be developed. The heat treatment is an effective method for this process.
Subject
Industrial and Manufacturing Engineering,Mechanics of Materials,General Materials Science
Cited by
8 articles.
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