Fatigue Crack Growth in Ultrafine Grained Aluminium Alloy

George Chi Ho Tang; Mark Hoffman; Jing Li Yan; Quadir M. D. Zakaria; Rimma Lapovok

doi:10.4028/www.scientific.net/msf.690.254

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JOURNAL ARTICLE

Fatigue Crack Growth in Ultrafine Grained Aluminium Alloy

George Chi Ho Tang Mark Hoffman Jing Li Yan Quadir M. D. Zakaria Rimma Lapovok

Year: 2011 Journal: Materials science forum Vol: 690 Pages: 254-257 Publisher: Trans Tech Publications

DOI: 10.4028/www.scientific.net/msf.690.254

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Abstract

The microstructure, fatigue crack growth behaviour and hardness of ultra fine grained 6061 aluminium alloy obtained by equal angle channel processing was studied. ECAP resulted in significant grain refinement down to the sub micron level and corresponding increase in hardness. Results point to a similar fatigue threshold stress intensity range and fatigue crack growth rates for 1, 2, 4 and 6 passes of ECAP.

Keywords:

Materials science Paris' law Aluminium Metallurgy Alloy Aluminium alloy Microstructure Grain size Crack closure Composite material Fracture mechanics

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Microstructure and mechanical properties

Physical Sciences → Materials Science → Materials Chemistry

Metal Forming Simulation Techniques

Physical Sciences → Engineering → Mechanical Engineering

Aluminum Alloys Composites Properties

Physical Sciences → Engineering → Mechanical Engineering

Fatigue Crack Growth in Ultrafine Grained Aluminium Alloy

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