Non-equilibrium grain boundary co-segregation of nickel and tin in 2·6 NiCrMoV steel

Authors: Wang, M.Q.¹; Wang, K.¹; Deng, Q.¹

Source: Materials Science and Technology, Volume 25, Number 10, October 2009 , pp. 1238-1242(5)

Publisher: Maney Publishing

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Abstract:

The grain boundary segregation isotherms of several elements were recorded by Misra (R. D. K. Misra: Surf. Inter. Anal., 2001, 31, (7), 509-521.) at 853 and 883 K on 2·6NiCrMoV low alloy steel. It is of interest that parallel kinetics of segregation and simultaneous concentration maximum of Ni and Sn at grain boundaries were observed during isothermal process. In the present article, the phenomenon will be analysed, from which the authors conclude that non-equilibrium grain boundary cosegregation of Ni and Sn occurs in 2·6NiCrMoV steel.

Keywords: METALS AND ALLOYS; GRAIN BOUNDARY SEGREGATION; DIFFUSION; KINETICS; VACANCIES

Document Type: Research article

DOI: 10.1179/174328407X192840

Affiliations: 1: Superalloy Department, Central Iron and Steel Research Institute, Beijing, 100081, China

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