High Temperature Multiaxial Creep-Fatigue Life Prediction for YH61 Nickel-Base Single Crystal Superalloy

Abstract:

This paper discusses an evaluation method of creep-fatigue lives of YH61 single crystal superalloy under multiaxial loading at high temperature. Three types of creep-fatigue tests were performed using three types of the single crystalsuperalloy specimens at 1173K. They were push-pull tests using solid bar specimens, tension-torsion tests using hollow cylinder specimens and biaxial tension-compression tests using cruciform specimens. Anisotropic strain and Mises stress in combination with frequency modified fatigue equation were applied for evaluating the creep-fatigue lives in the three types of tests. The former parameter gave a relatively large scatter but the latter parameter a small scatter in the correlation.

• Periodical: Advanced Materials Research (Volumes 891-892)
• Pages: 1027-1032
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.891-892.1027
• Online since: March 2014
• Authors: Wen Zhu Wang, Masao Sakane*, Takamoto Itoh, Akira Yoshinari, Nobuhiro Isobe, Noriaki Matsuda
• Keywords: Creep-Fatigue, High-Temperature, Life Prediction, Multiaxial Stress, Single Crystal, Superalloy

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