Investigation on Stress and Strain of Ni-Based Single Crystal Super-Alloy Specimen with Single Hole Based on Abacus

Abstract:

The Miss stress, Max.principal strain and Magnitude displacement have important influence on the fatigue life of the Ni-based single crystal super-alloy turbine blades. This work investigated The Miss stress, Max.principal strain and Magnitude displacement of Ni-based single crystal super-alloy specimen with single hole along dangerous path under different working conditions by Abacus. The results show that the initial crack length and loading stresses are larger, the crack growth on the specimen is faster, and then, the fatigue life is the shorter. Moreover, for the different stress ratios, smaller stress ratio can lead to lower fatigue life. The result is significant to design turbine of Ni-based single crystal super-alloy of high accuracy, high reliability and high strength.

• Periodical: Key Engineering Materials (Volume 891)
• Pages: 17-22
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.891.17
• Online since: July 2021
• Authors: Xiang Zhen Xue*, Zhi Xun Wen, Wen Xian Li
• Keywords: Finite Element, Magnitude Displacement, Max.Principal Strain, Miss Stress, Ni-Based Single Crystal Super-Alloy

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