Deformation Behaviour of Asymmetrically Fatigue Cycled Metallic Materials

Krishna Dutta; Kalyan Kumar Ray

doi:10.4028/www.scientific.net/KEM.592-593.741

Paper Titles

Nanoindentation and Microstructural Study of Cu-Co Alloys after Severe Plastic Deformation
p.720

Mechanical Aspects of Plastic Deformation of Nickel Based Superalloy
p.724

Relations between Microstructure and Mechanical Properties in Laminated Ti-Intermetallic Composites Synthesized Using Ti and Al Foils
p.728

Fatigue Cracking and Acoustic Emission Regularities in Metals: Crack Origination and Growth
p.735

Deformation Behaviour of Asymmetrically Fatigue Cycled Metallic Materials
p.741

An Effect of the First Non-Singular Term of the Williams Asymptotic Expansion to the Stability of the Bi-Material Orthotropic Notch
p.745

Fatigue Crack Growth of Thin Wall Magnesium AZ91 Alloy Cast
p.749

Short Crack Growth Behavior in Ferrite-Bainite Dual Phase Steels
p.753

A Discrete Model for Diffusion-Induced Grain Boundary Deterioration
p.757

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Deformation Behaviour of Asymmetrically Fatigue Cycled Metallic Materials

Abstract:

This investigation aims to examine the influence of asymmetric fatigue cycling on the nature of strain accumulation and its influence on post fatigue tensile properties of three materials namely 6063 aluminum alloy, interstitial free steel and α-brass. The results highlight that strain accumulation provides improvement in yield and tensile strength of the investigated materials, with associated reduction in their %uniform elongation. However, %total elongation is found to be strong function of post-necking elongation which is governed by substructural features of the ratcheted material. Increase in strength values has been correlated with increased cyclic damage of the materials.