Study of fatigue behaviour of 7475 aluminium alloy | Zendy

B B Verma | Zendy; J. D. Atkinson | Zendy; M.Mohandas Pravin kumar | Zendy

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Study of fatigue behaviour of 7475 aluminium alloy

Author(s) -

B B Verma,

J. D. Atkinson,

M.Mohandas Pravin kumar

Publication year - 2001

Publication title -

bulletin of materials science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.35

H-Index - 72

eISSN - 0973-7669

pISSN - 0250-4707

DOI - 10.1007/bf02710107

Subject(s) - materials science , alloy , aluminium , aluminium alloy , metallurgy , 6063 aluminium alloy , paris' law , fracture toughness , 5005 aluminium alloy , ultimate tensile strength , toughness , composite material , crack closure , fracture mechanics

Fatigue properties of a thermomechanically treated 7475 aluminium alloy have been studied in the present investigation. The alloy exhibited superior fatigue life compared to conventional structural aluminium alloys and comparable stage II crack growth rate. It was also noticed that the fatigue crack initiated from a surface grain and the crack extension was dominated by ductile striations. Analysis also revealed that this alloy possessed fracture toughness and tensile properties superior to that noticed with other structural aluminium alloys. Therefore the use of this alloy can safely reduce the overall weight of the aircraft.

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