Effect of Microstructure on Small Fatigue Crack Initiation and Propagation Behavior of Ti-6Al-4V Alloy

K. Komano; Sotomi Ishihara; A.J. McEvily; H. Shibata

doi:10.4028/www.scientific.net/KEM.353-358.1215

Paper Titles

Evaluation of a Strain Energy Equivalence Principle (SEEP)-Based Continuum Damage Model
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The Fracture Mechanism of As-Cast and Extruded SiCp/AZ91 Composites Fabricated by Stir Casting
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Effect of Residual Stress Field in Front of the Slant Precrack Tip on Bent Fatigue Crack Propagation
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Estimation of the Elastic-Plastic Fracture Behavior of Fiber Reinforced MMC According to the Change of Interfacial Characteristics
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Effect of Microstructure on Small Fatigue Crack Initiation and Propagation Behavior of Ti-6Al-4V Alloy
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On Probabilistic Fatigue Crack Growth Behavior under Constant Amplitude Loads
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A Study on the Mechanism of Small Fatigue Crack Deflection Behavior in Alpha-Brass by Means of In Situ Atomic Force Microscopy and Crystallo-Graphic Orientation Analysis
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Viscoelastic Deformation of PC/ABS Alloy
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Combustion Synthesis of ZrW₂O₈ and Preparation of its Composite with Near Zero Thermal Expansion
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Effect of Microstructure on Small Fatigue Crack Initiation and Propagation Behavior of Ti-6Al-4V Alloy

Abstract:

Fatigue tests were performed in laboratory air using extruded Ti-6Al-4V to determine the effect of microstructure on S-N curve, and the crack initiation and crack propagation behavior of the alloy. A modified linear elastic fracture mechanics approach was used in the analysis of the short crack propagation behavior to predict the S-N curve and the crack propagation curve. The predictions agreed well with the experimental results.