Effects of the Primary NbC Elimination on the SSCC Resistance of a HSLA Steel for Oil Country Tubular Goods
Sulfide stress corrosion cracking (SSCC) has been of particular concern in high strength low alloyed (HSLA) steels used in the oil industry, and the non-metallic inclusions are usually considered as a detrimental factor to the SSCC resistance. In the present work, continuous casting (CC) and electro...
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| author | Tianyi Zeng Shuzhan Zhang Xianbo Shi Wei Wang Wei Yan Yan Tian Mingchun Zhao Ke Yang |
| author_facet | Tianyi Zeng Shuzhan Zhang Xianbo Shi Wei Wang Wei Yan Yan Tian Mingchun Zhao Ke Yang |
| author_sort | Tianyi Zeng |
| collection | DOAJ |
| description | Sulfide stress corrosion cracking (SSCC) has been of particular concern in high strength low alloyed (HSLA) steels used in the oil industry, and the non-metallic inclusions are usually considered as a detrimental factor to the SSCC resistance. In the present work, continuous casting (CC) and electroslag remelting (ESR) were adopted to fabricate a 125 ksi grade steel in order to evaluate the effect of microstructure with and without primary NbC carbides (inclusions) on the SSCC resistance in the steel. It was found that ESR could remove the primary NbC carbides, and hence, slightly increase the strength without deteriorating the SSCC resistance. The elimination of primary NbC carbides caused two opposite effects on the SSCC resistance in the studied steel. On the one hand, the elimination of primary NbC carbides increased the dislocation density and the proportion of high angle boundaries (HABs), which was not good to the SSCC resistance. On the other hand, the elimination of primary NbC carbides also induced more uniform nanosized secondary NbC carbides formed during tempering, providing many irreversible hydrogen traps. These two opposite effects on SSCC resistance due to the elimination of primary NbC carbides were assumed to be offset, and thus, the SSCC resistance was not greatly improved using ESR. |
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| id | doaj.art-01e3604507e44f3c865372aaf74f5cc2 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T07:28:36Z |
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| spelling | doaj.art-01e3604507e44f3c865372aaf74f5cc22023-11-22T14:01:51ZengMDPI AGMaterials1996-19442021-09-011418530110.3390/ma14185301Effects of the Primary NbC Elimination on the SSCC Resistance of a HSLA Steel for Oil Country Tubular GoodsTianyi Zeng0Shuzhan Zhang1Xianbo Shi2Wei Wang3Wei Yan4Yan Tian5Mingchun Zhao6Ke Yang7Shi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaShi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaSulfide stress corrosion cracking (SSCC) has been of particular concern in high strength low alloyed (HSLA) steels used in the oil industry, and the non-metallic inclusions are usually considered as a detrimental factor to the SSCC resistance. In the present work, continuous casting (CC) and electroslag remelting (ESR) were adopted to fabricate a 125 ksi grade steel in order to evaluate the effect of microstructure with and without primary NbC carbides (inclusions) on the SSCC resistance in the steel. It was found that ESR could remove the primary NbC carbides, and hence, slightly increase the strength without deteriorating the SSCC resistance. The elimination of primary NbC carbides caused two opposite effects on the SSCC resistance in the studied steel. On the one hand, the elimination of primary NbC carbides increased the dislocation density and the proportion of high angle boundaries (HABs), which was not good to the SSCC resistance. On the other hand, the elimination of primary NbC carbides also induced more uniform nanosized secondary NbC carbides formed during tempering, providing many irreversible hydrogen traps. These two opposite effects on SSCC resistance due to the elimination of primary NbC carbides were assumed to be offset, and thus, the SSCC resistance was not greatly improved using ESR.https://www.mdpi.com/1996-1944/14/18/5301SSCCHSLA steelselectroslag remeltingcontinuous castingprimary NbC carbides |
| spellingShingle | Tianyi Zeng Shuzhan Zhang Xianbo Shi Wei Wang Wei Yan Yan Tian Mingchun Zhao Ke Yang Effects of the Primary NbC Elimination on the SSCC Resistance of a HSLA Steel for Oil Country Tubular Goods Materials SSCC HSLA steels electroslag remelting continuous casting primary NbC carbides |
| title | Effects of the Primary NbC Elimination on the SSCC Resistance of a HSLA Steel for Oil Country Tubular Goods |
| title_full | Effects of the Primary NbC Elimination on the SSCC Resistance of a HSLA Steel for Oil Country Tubular Goods |
| title_fullStr | Effects of the Primary NbC Elimination on the SSCC Resistance of a HSLA Steel for Oil Country Tubular Goods |
| title_full_unstemmed | Effects of the Primary NbC Elimination on the SSCC Resistance of a HSLA Steel for Oil Country Tubular Goods |
| title_short | Effects of the Primary NbC Elimination on the SSCC Resistance of a HSLA Steel for Oil Country Tubular Goods |
| title_sort | effects of the primary nbc elimination on the sscc resistance of a hsla steel for oil country tubular goods |
| topic | SSCC HSLA steels electroslag remelting continuous casting primary NbC carbides |
| url | https://www.mdpi.com/1996-1944/14/18/5301 |
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