Research on high-temperature mechanical properties of wellhead and downhole tool steel in offshore multi-round thermal recovery

High-temperature tensile tests at 25, 150, 250, and 350°C were carried out on 30CrMo, 42CrMo, 1Cr13, and 304 steels. The changes in tensile strength, yield strength, elongation, and area reduction ratio with temperature were determined. By analyzing the fracture morphology and the relationship betwe...

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Autores principales:	Zhang Binqi, Ju Shaodong, Liu Chuangang, Ma Yingwen, Chen Haiyan, Fan Li
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	high-temperature mechanical property microhardness tensile strength ductility fracture morphology Technology T Chemical technology TP1-1185 Chemicals: Manufacture, use, etc. TP200-248
Acceso en línea:	https://doaj.org/article/a261061ebfb5443eb86fee3f02fd0994
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spelling	oai:doaj.org-article:a261061ebfb5443eb86fee3f02fd09942021-12-05T14:10:50ZResearch on high-temperature mechanical properties of wellhead and downhole tool steel in offshore multi-round thermal recovery2191-032410.1515/htmp-2021-0032https://doaj.org/article/a261061ebfb5443eb86fee3f02fd09942021-10-01T00:00:00Zhttps://doi.org/10.1515/htmp-2021-0032https://doaj.org/toc/2191-0324High-temperature tensile tests at 25, 150, 250, and 350°C were carried out on 30CrMo, 42CrMo, 1Cr13, and 304 steels. The changes in tensile strength, yield strength, elongation, and area reduction ratio with temperature were determined. By analyzing the fracture morphology and the relationship between strength and hardness, the influence of high-temperature mechanical properties on crack sensitivity and the mechanism of crack formation is discussed. Experimental results indicated that both the tensile and yield strengths of the four steels gradually decrease with the increase in temperature. The yield ratios of 30CrMo, 42CrMo, 1Cr13, and 304 steels are, respectively, 0.71–0.77, 0.79–0.86, 0.84–0.88, and 0.33–0.40 which shows that among the four steels, 304 has the best ductility, while 1Cr13 has the worst ductility. As for the four steels, the values of reduction ratio of area are greater than 60%, except for 42CrMo which is slightly lower than 60% at 150 and 250°C, indicating that the four steels have low crack sensitivity within the test temperature range. Ductile fracture is the main fracture mechanism for 30CrMo, 42CrMo, and 304 steel, whereas brittle fracture is predominant for 1Cr13. There is a linear regression relationship between the strength and hardness at different temperatures. The obtained linear regression relationship can be used to predict and estimate the strength of 30CrMo, 42CrMo, 1Cr13, and 304 steels at different temperatures according to the hardness results.Zhang BinqiJu ShaodongLiu ChuangangMa YingwenChen HaiyanFan LiDe Gruyterarticlehigh-temperature mechanical propertymicrohardnesstensile strengthductilityfracture morphologyTechnologyTChemical technologyTP1-1185Chemicals: Manufacture, use, etc.TP200-248ENHigh Temperature Materials and Processes, Vol 40, Iss 1, Pp 325-336 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	high-temperature mechanical property microhardness tensile strength ductility fracture morphology Technology T Chemical technology TP1-1185 Chemicals: Manufacture, use, etc. TP200-248
spellingShingle	high-temperature mechanical property microhardness tensile strength ductility fracture morphology Technology T Chemical technology TP1-1185 Chemicals: Manufacture, use, etc. TP200-248 Zhang Binqi Ju Shaodong Liu Chuangang Ma Yingwen Chen Haiyan Fan Li Research on high-temperature mechanical properties of wellhead and downhole tool steel in offshore multi-round thermal recovery
description	High-temperature tensile tests at 25, 150, 250, and 350°C were carried out on 30CrMo, 42CrMo, 1Cr13, and 304 steels. The changes in tensile strength, yield strength, elongation, and area reduction ratio with temperature were determined. By analyzing the fracture morphology and the relationship between strength and hardness, the influence of high-temperature mechanical properties on crack sensitivity and the mechanism of crack formation is discussed. Experimental results indicated that both the tensile and yield strengths of the four steels gradually decrease with the increase in temperature. The yield ratios of 30CrMo, 42CrMo, 1Cr13, and 304 steels are, respectively, 0.71–0.77, 0.79–0.86, 0.84–0.88, and 0.33–0.40 which shows that among the four steels, 304 has the best ductility, while 1Cr13 has the worst ductility. As for the four steels, the values of reduction ratio of area are greater than 60%, except for 42CrMo which is slightly lower than 60% at 150 and 250°C, indicating that the four steels have low crack sensitivity within the test temperature range. Ductile fracture is the main fracture mechanism for 30CrMo, 42CrMo, and 304 steel, whereas brittle fracture is predominant for 1Cr13. There is a linear regression relationship between the strength and hardness at different temperatures. The obtained linear regression relationship can be used to predict and estimate the strength of 30CrMo, 42CrMo, 1Cr13, and 304 steels at different temperatures according to the hardness results.
format	article
author	Zhang Binqi Ju Shaodong Liu Chuangang Ma Yingwen Chen Haiyan Fan Li
author_facet	Zhang Binqi Ju Shaodong Liu Chuangang Ma Yingwen Chen Haiyan Fan Li
author_sort	Zhang Binqi
title	Research on high-temperature mechanical properties of wellhead and downhole tool steel in offshore multi-round thermal recovery
title_short	Research on high-temperature mechanical properties of wellhead and downhole tool steel in offshore multi-round thermal recovery
title_full	Research on high-temperature mechanical properties of wellhead and downhole tool steel in offshore multi-round thermal recovery
title_fullStr	Research on high-temperature mechanical properties of wellhead and downhole tool steel in offshore multi-round thermal recovery
title_full_unstemmed	Research on high-temperature mechanical properties of wellhead and downhole tool steel in offshore multi-round thermal recovery
title_sort	research on high-temperature mechanical properties of wellhead and downhole tool steel in offshore multi-round thermal recovery
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/a261061ebfb5443eb86fee3f02fd0994
work_keys_str_mv	AT zhangbinqi researchonhightemperaturemechanicalpropertiesofwellheadanddownholetoolsteelinoffshoremultiroundthermalrecovery AT jushaodong researchonhightemperaturemechanicalpropertiesofwellheadanddownholetoolsteelinoffshoremultiroundthermalrecovery AT liuchuangang researchonhightemperaturemechanicalpropertiesofwellheadanddownholetoolsteelinoffshoremultiroundthermalrecovery AT mayingwen researchonhightemperaturemechanicalpropertiesofwellheadanddownholetoolsteelinoffshoremultiroundthermalrecovery AT chenhaiyan researchonhightemperaturemechanicalpropertiesofwellheadanddownholetoolsteelinoffshoremultiroundthermalrecovery AT fanli researchonhightemperaturemechanicalpropertiesofwellheadanddownholetoolsteelinoffshoremultiroundthermalrecovery
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Research on high-temperature mechanical properties of wellhead and downhole tool steel in offshore multi-round thermal recovery

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