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

Kuniaki Akahoshi, Kazuhiro Ogawa, Hideo Miura

研究成果: Conference article査読

1 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)2391-2394
ページ数4
ジャーナルKey Engineering Materials
353-358
PART 4
DOI
出版ステータスPublished - 2007 1 1
イベントAsian Pacific Conference for Fracture and Strength (APCFS'06) - Sanya, Hainan Island, China
継続期間: 2006 11 222006 11 25

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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