Effect of heat treatment on the structure and properties of sheet steel 45 for the finish cutting of components

Legeida, N. F.; Kovalenko, L. V.; Krasnopol'skii, V. M.; Podpovetnaya, T. A.

doi:10.1007/bf00769315

Cited by 1 publication

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“…Besides its energy saving and high efficiency, the new process may reduce and eliminate defects appearing in the heat preservation process, such as oxidation, decarbonization and so on, resulting in improvement of product quality. Therefore, both domestic and foreign heat treatment workers have done a lot of researches in this field [4][5][6][7][8] . Since zero time holding quench process has saved the holding time, are there any differences in mechanical properties and microstructure of the workpieces processed by this technique from those that are processed by conventional heat treatment?…”

Section: Introductionmentioning

confidence: 99%

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

Chen

Zhang

Long³

et al. 2011

AMR

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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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Section: Introductionmentioning

confidence: 99%