Effect of Titanium and Boron Microalloying on Sulfide Stress Cracking in C110 Casing Steel

Autor:	Ming Luo, Zhong-Hua Zhang, Yao-Heng Liu, Mou-Cheng Li
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	casing steel Ti and B sulfide stress cracking prior austenite grain size hardenability Technology Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Zdroj:	Materials, Vol 13, Iss 24, p 5713 (2020)
Druh dokumentu:	article
ISSN:	1996-1944
DOI:	10.3390/ma13245713
Popis:	The effect of Ti and B microalloying on the hardenability, prior austenite grain size (PAGS), mechanical properties, and sulfide stress cracking (SSC) of C110 grade steel was studied by Jominy testing, static tensile testing, an optical microscope (OM), scanning electron microscopy (SEM) and double cantilever beam (DCB) testing. The results show that the addition of 0.015% Ti and 0.002% B into a medium-carbon Fe-Cr-Mo-Nb-V steel increased the hardenability and refined the PAGS and quenched martensite packets, and the size of carbides was reduced. It is believed that these behaviors are responsible for the improvement in the threshold stress intensity factor KISSC.
Databáze:	Directory of Open Access Journals
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