Review on Microstructure and Properties of 45 Steel under High-Temperature Tempering
DOI:
https://doi.org/10.63313/FE.9014Keywords:
45 Steel, High-Temperature Tempering, Microstructure StabilityAbstract
As the most widely used medium-carbon structural steel in the machinery manufacturing industry, 45 steel exhibits service performance of components that is decisively governed by the selection of process parameters for high-temperature tempering. This paper summarizes the microstructural evolution and mechanical properties of the aforementioned two materials under high-temperature tempering conditions. For 45 steel, research findings and mainstream conclusions from existing literature are elaborated from five perspectives: heat treatment surface effects, fatigue behavior regulation, high-temperature mechanical characteristics, innovative process exploration, and hardness degradation laws.
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