Abstract

It is widely acknowledged that topologically close packed (TCP) phases are detrimental to comprehensive properties of superalloys, as TCP phases deplete strengthening elements from matrix and easily become crack initiations. In this work, the precipitation kinetics and morphology of topologically close packed m phase in FGH4097 powder metallurgy (PM) superalloy with (0~0.89%)Hf and the effect of m phase on the mechanical prop*国家国际科技合作专项资助项目2014DFR50330 收到初稿日期: 2015-07-16,收到修改稿日期: 2015-12-23 作者简介:张义文,男, 1964年生,教授级高级工程师 DOI: 10.11900/0412.1961.2015.00389 第445-454页 pp.445-454

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