A New Co-Base Superalloy Strengthened by γ′ Phase

Chuanyong Cui; Dehai Ping; Yuefeng Gu; Hiroshi Harada

doi:10.2320/matertrans.47.2099

MATERIALS TRANSACTIONS

Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678

A New Co-Base Superalloy Strengthened by γ′ Phase

Chuanyong Cui, Dehai Ping, Yuefeng Gu, Hiroshi Harada

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Keywords: cobalt alloy, microstructure, yield strength, precipitation hardening

JOURNAL FREE ACCESS

2006 Volume 47 Issue 8 Pages 2099-2102

DOI https://doi.org/10.2320/matertrans.47.2099

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Abstract

A γ′ strengthened Co-base superalloy with enhanced high temperature properties has been newly developed and the microstructure is mainly composed of a γ⁄γ′ (fcc/L1₂) structure. The cuboidal γ′ phase is formed with a bimodal distribution and is suggested to play the role of precipitation hardening.

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