Effect of Short-Time Carburizing Treatment on Microstructure and Mechanical Properties of M50 Steel

Wei, Yuhan; Yu, Xingfu; Wang, Shuai; Shen, Xiangyang; Zhao, Wenzeng; Su, Yong; Yu, Yang; Feng, Xin

doi:10.1007/s12540-022-01326-1

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2023

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“…Compared with N80Q steel, 80SH steel has a relatively uniform grain size with obvious grain boundaries. Greyish-black is acicular ferrite and second phase, and fine precipitates are less [6].…”

Section: Test Results and Discussionmentioning

confidence: 99%

Analysis of Tensile Properties of N80Q Steel and 80SH Steel

Yang

Wang

Yang

et al. 2020

MSF

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During heavy oil production, the performance of casing varies with temperature in the service environment. The tensile test of N80Q Steel and 80SH Steel were carried out to evaluate the mechanical properties during the service. The results indicated that the grain size of 80SH steel was relatively uniform and the grain boundary was relatively obvious compared with N80Q steel. A qualitative analysis was performance by relating the tensile properties with different temperature. The results showed that the yield strength, the tensile strength and elongation of N80Q and 80SH steels decreased with increasing temperature, but the degree of decline was limited. The observation of the tensile fracture revealed that the characteristics of the radiation zone of N80Q steel were obvious compared with 80SH steel at 20°C.

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Section: Test Results and Discussionmentioning

confidence: 99%