Locally delaminating stress corrosion cracking growth of strain-hardened austenitic alloys in hydrogenated high temperature water environments

Zhanpeng Lu, He Xue, Hiroyoshi Murakami, Tetsuo Shoji

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Locally delaminating cracks, i.e. cracks that grow along the plane that is parallel to the principal applied loading direction, are observed on the fracture surfaces of heavily strain-hardened austenitic alloys after stress corrosion cracking tests in hydrogenated high temperature water environments. These delaminating cracks often occur locally on mixed intergranular- transgranular stress corrosion cracking fracture surfaces. The crack tip stress field is analyzed by finite element analysis. The physical-chemical degradation effect of stress on oxidation kinetics is formulated. The combinations of local oxidation penetration, relatively slow crack growth on the principal plane, and locally high crack tip stress are favorable for the growth of delaminating cracks. These conditions can be satisfied in stress corrosion cracking for austenitic alloys with heavily deformed microstructures and high strengths in hydrogenated high temperature water environments.

本文言語English
ホスト出版物のタイトルProceedings of the ASME Pressure Vessels and Piping Conference 2009 - Materials and Fabrication
ページ1101-1108
ページ数8
PART B
DOI
出版ステータスPublished - 2010 6月 7
イベント2009 ASME Pressure Vessels and Piping Conference - Prague, Czech Republic
継続期間: 2009 7月 262009 7月 30

出版物シリーズ

名前American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
番号PART B
6
ISSN(印刷版)0277-027X

Other

Other2009 ASME Pressure Vessels and Piping Conference
国/地域Czech Republic
CityPrague
Period09/7/2609/7/30

ASJC Scopus subject areas

  • 機械工学

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