Thermodynamic Calculation on Calcium Treatment for 26CrMo4S/2 Steel

Sun, Guodong; Sui, Ya-fei; Wang, Canguo; Guo, Min; Zhang, Mei

doi:10.1016/s1006-706x(14)60122-9

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…To facilitate the understanding of the following analyses, the second-phase particles and solution temperature ranges of the four steels were calculated using Thermo-Calc thermodynamic software [22]. Specifically, the temperature ranges for MnS, TiN, V(CN), and CuS were 1350-1450°C, 1250-1450°C , 850-700°C, and 700-650°C, respectively.…”

Section: Methodsmentioning

confidence: 99%

Effect of inclusions on toughness and microstructures in simulated coarse-grain heat-affected zones of Al/Ti deoxidised and Nb/V microalloyed steels

Zou

Yinxiao

2018

Ironmaking & Steelmaking

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To explore the effect of inclusions in the coarse-grain heat-affected zone (CGHAZ), four groups were designed using the 'Al/Ti deoxidised + Nb/V microalloyed' technical route. The toughness of the CGHAZ of Al-Ti-V-N steel was greatly promoted by the presence of polygonal ferrite (PF) after high heat input rather than the traditionally used acicular ferrite (AF). Furthermore, micron-sized inclusions in AF or PF were analysed, and the results indicated that the TiN and V (CN) particles attached on the Ti/Al oxide inclusions induced the nucleation of AF and PF. That can be concluded that the nucleation mechanism of PF is similar to that of AF. In addition, smaller micron-and nanoscale-size inclusions observed by transmission electron microscopy could not induce the nucleation of AF and PF because of the low heterogeneous nucleation energy. Nevertheless, these inclusions can have a drag effect on grain boundary migration.

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Section: Methodsmentioning

confidence: 99%