Precipitation behavior of M23C6 type carbides in GH3230 alloy

doi:10.13251/j.issn.0254-6051.2021.02.009

Abstract

Abstract: Precipitation behavior of M₂₃C₆ type carbides in solution-treated GH3230 alloy when aged at the range of 800-1100 ℃ were studied. The results show that, the solution-treatment microstructure of the GH3230 alloy consists of γ phase, primary granular carbides of M₆C, and granular carbides of M₂₃C₆ at the grain boundary. After short time aging treatment at the range of 800-1100 ℃, the M₂₃C₆ type carbides are precipitated at the grain boundary and in the grain. The granular carbides of M₂₃C₆ at the grain boundary are prone to grow along the grain, and gradually become cellular carbides. At the same aging temperature, the amount of carbides in the grain increases with the increase of aging time, and then gradually redissolves, the beginning of which can gradually advance with the increase of aging temperature.

Key words: GH3230 alloy, solution treatment, aging treatment, microstructure, M₂₃C₆ type carbides

CLC Number:

TG132.3⁺2

Du Xinglin, Ju Quan, Ma Huiping, Du Jinhui. Precipitation behavior of M₂₃C₆ type carbides in GH3230 alloy[J]. Heat Treatment of Metals, 2021, 46(2): 50-54.

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Precipitation behavior of M₂₃C₆ type carbides in GH3230 alloy

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