Gamma-channel stabilization mechanism in Ni-base superalloys

被引：11

作者：

Goerler, Johannes V. ^{[1
]}

Brinckmann, Steffen ^{[1
,2
]}

Shchyglo, Oleg ^{[1
]}

Steinbach, Ingo ^{[1
]}

机构：

[1] Ruhr Univ Bochum, ICAMS, D-44801 Bochum, Germany

[2] Max Planck Inst Eisenforsch GmbH, D-40237 Dusseldorf, Germany

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2015年 / 95卷 / 11期

关键词：

Ni-Al; superalloys; misfit dislocations; CREEP;

D O I：

10.1080/09500839.2015.1109716

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A mechanism is presented which opposes coalescence of gamma'-precipitates in Ni-base superalloys. The mechanism is based on the non-linear behaviour of the elastic energy in gamma-channels, caused by the misfit strain between matrix and precipitate, as a function of the channel width. Variation of the channel width causes a disjoining pressure dependent on the density of misfit dislocations.

引用

收藏

页码：519 / 525

页数：7

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