Endurance property of 2.25Cr-1Mo-0.25V steel forgings for hydrogenation reactor

doi:10.13251/j.issn.0254-6051.2021.04.033

Abstract

Abstract: Effects of high temperature endurance on fracture and microstructure of 2.25Cr-1Mo-0.25V steel were researched. Normal temperature tensile strength, high temperature tensile strength and high-temperature endurance strength under same temperature and different loading of the as-heat treated specimens were analyzed. The fracture and microstructure of the specimens were observed by means of scanning electron microscope(SEM). The results show that with the increase of the loading stress, the endurance time decreases significantly. After fracture, rich-Mo phases are precipitated in the fracture, and with the increase of the fracture time, the content of Mo in the precipitated phase increases gradually.

Key words: 2.25Cr-1Mo-0.25V steel, endurance test, microstructure, fracture morphology, rich-Mo

CLC Number:

TG113

Shi Ruxing, Yu Xingsheng, Yuan Yasha, He Chunjing, Chen Ming, Dai Bojie. Endurance property of 2.25Cr-1Mo-0.25V steel forgings for hydrogenation reactor[J]. Heat Treatment of Metals, 2021, 46(4): 182-186.

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