Fatigue crack growth resistance in nickel-base superalloy at elevated temperatures

Norio Kawagoishi; Qiang Chen; Hironobu Nisitani; Masahiro Goto; Hideho Tanaka

doi:10.1299/kikaia.63.2298

Fatigue crack growth resistance in nickel-base superalloy at elevated temperatures

Norio Kawagoishi, Qiang Chen, Hironobu Nisitani, Masahiro Goto, Hideho Tanaka

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Rotating bending fatigue tests were carried out for Inconel 718 at room temperature and elevated temperatures of 300 °C, 500 °C and 600 °C to investigate the influence of temperature on the fatigue crack growth resistance. The crack growth rate can be expressed by the small crack growth law, dl/dN = C₁σ_aⁿl = C₂(σ_a/σ_B)ⁿl, at all the temperatures, where σ_B, σ_a and l are the tensile strength, the stress amplitude and the crack length, and C₁, C₂ and n are constants. Therefore, the resistance to crack growth was evaluated using the small crack growth law. The fatigue crack growth resistance decreased with the increase of temperature.

Original language	English
Pages (from-to)	2298-2302
Number of pages	5
Journal	Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume	63
Issue number	615
DOIs	https://doi.org/10.1299/kikaia.63.2298
Publication status	Published - 1997
Externally published	Yes

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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abstract = "Rotating bending fatigue tests were carried out for Inconel 718 at room temperature and elevated temperatures of 300 °C, 500 °C and 600 °C to investigate the influence of temperature on the fatigue crack growth resistance. The crack growth rate can be expressed by the small crack growth law, dl/dN = C1σanl = C2(σa/σB)nl, at all the temperatures, where σB, σa and l are the tensile strength, the stress amplitude and the crack length, and C1, C2 and n are constants. Therefore, the resistance to crack growth was evaluated using the small crack growth law. The fatigue crack growth resistance decreased with the increase of temperature.",

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T1 - Fatigue crack growth resistance in nickel-base superalloy at elevated temperatures

AU - Kawagoishi, Norio

AU - Chen, Qiang

AU - Nisitani, Hironobu

AU - Goto, Masahiro

AU - Tanaka, Hideho

PY - 1997

Y1 - 1997

N2 - Rotating bending fatigue tests were carried out for Inconel 718 at room temperature and elevated temperatures of 300 °C, 500 °C and 600 °C to investigate the influence of temperature on the fatigue crack growth resistance. The crack growth rate can be expressed by the small crack growth law, dl/dN = C1σanl = C2(σa/σB)nl, at all the temperatures, where σB, σa and l are the tensile strength, the stress amplitude and the crack length, and C1, C2 and n are constants. Therefore, the resistance to crack growth was evaluated using the small crack growth law. The fatigue crack growth resistance decreased with the increase of temperature.

AB - Rotating bending fatigue tests were carried out for Inconel 718 at room temperature and elevated temperatures of 300 °C, 500 °C and 600 °C to investigate the influence of temperature on the fatigue crack growth resistance. The crack growth rate can be expressed by the small crack growth law, dl/dN = C1σanl = C2(σa/σB)nl, at all the temperatures, where σB, σa and l are the tensile strength, the stress amplitude and the crack length, and C1, C2 and n are constants. Therefore, the resistance to crack growth was evaluated using the small crack growth law. The fatigue crack growth resistance decreased with the increase of temperature.

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ER -

Fatigue crack growth resistance in nickel-base superalloy at elevated temperatures

Abstract

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