Non-destructive evaluation of creep damage of Ni-based superalloy using a scanning blue laser microscope

被引：1

作者：

Akahoshi, Kuniaki ^{[1
]}

Ogawa, Kazuhiro ^{[1
]}

Miura, Hideo ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Fracture & Reliabil Res Inst, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

PROGRESSES IN FRACTURE AND STRENGTH OF MATERIALS AND STRUCTURES, 1-4 | 2007年 / 353-358卷

关键词：

non-destructive evaluation; creep damage; Ni-based superalloy; scanning laser microscope;

D O I：

10.4028/www.scientific.net/KEM.353-358.2391

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to assure the reliability of advanced gas turbine systems, it is very important to evaluate the damage of high temperature materials such as Ni-based superalloys under creep and fatigue conditions quantitatively. The refractive index of the gamma-prime phase is found to be smaller than that of the gamma phase in the Ni-based superalloy, when the wavelength of an irradiated laser beam is shorter than 500 nm. Therefore, it is possible to evaluate the creep damage of this material quantitatively and non-destructively by observing the change of the micro texture in a grain (rafting) using a scanning laser microscope.

引用

页码：2391 / 2394

页数：4

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