Microstructure and Mechanical Properties of 45 Steel by Zero Time Holding Quenching

Xiao Wen Chen; De Fen Zhang; Guang Wen Long; Qin Zou; Li Wang

doi:10.4028/www.scientific.net/AMR.335-336.577

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 335-336Microstructure and Mechanical Properties of 45...

Microstructure and Mechanical Properties of 45 Steel by Zero Time Holding Quenching

Abstract:

45 steel was quenched with zero time holding at different temperatures, followed by a high temperature tempering. The influence of quenching temperature on hardness, yield strength, tensile strength and microstructure of the steels was investigated by Rockwell tester, universal testing machines and metallographic microscopy, respectively. The results show that under quenching condition of zero time holding, hardness and strength of the 45 steel increase with increasing quenching temperature and reach the maximum at 860 °C, where the content of martensite is maximum while that of ferrite is minimum in the specimen. At higher temperatures, the grains become obviously coarse, resulting in decrease of mechanical properties.

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Periodical:

Advanced Materials Research (Volumes 335-336)

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577-582

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.335-336.577

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Online since:

September 2011

Authors:

Xiao Wen Chen, De Fen Zhang, Guang Wen Long, Qin Zou, Li Wang

Keywords:

45 Steel, Mechanical Property, Microstructure, Zero Time Holding Quenching

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