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Relationship between local stress field and high temperature fatigue crack propagation rate of Ni-based directionally solidified superalloy

Year: 2004

Type: article

Abstract: In order to clarify the effect of the local stress distribution on the fatigue crack propagation rate of directionally solidified superalloy, elastic stress analysis was carried out with simulating grain configuration of a test specimen. Local stress along loading direction showed higher value near grain boundaries, which attained about 1.5 times as the average stress. The crack propagation rate obtained by the crack propagation test was accerelated at intermittent regions, which was coinside with the stress concentrating regions in the stress analysis. It was suggested that the local stress distribution may affect the crack propagation rate.

Source: The proceedings of the JSME annual meeting

DOI: 10.1299/jsmemecjo.2004.1.0_181

Authors: Masato YAMAMOTO, Akito NITTA, Takayuki KITAMURA

Institutions: Central Research Institute of Electric Power Industry, Kyoto University

Language: English

Topic: Fatigue and fracture mechanics

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

OpenAlex ID: W2744696196

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