Fatigue Crack Growth Studies on ZE41A Cast Magnesium Alloy

Vol. 4 No. 2

Year : 2009

Issue : Nov-Jan

Title  : Fatigue Crack Growth Studies on ZE41A Cast Magnesium Alloy 

Author Name  : M. Sivapragash, P.R. Lakshminarayanan , K. Raghukandan , R. Karthikeyan , M. Hanumantha 

Synopsis  : 

In this research work, Fatigue Crack Growth (FCG) characteristics are studied using axial fatigue test on Compact Tension (CT) specimen for as cast, heat treated and welded material. The relation ship between fatigue crack growth rate and stress intensity factor range for crack growth are analyzed. How ever, the results of da/dN-?K curves for CT specimens and Paris constants are determined. The heat treated specimen shows lower growth rate compared to as cast and welded materials. The fracture surfaces of the tested specimen are observed under a scanning electron microscope to understand the type of fracture. The fracture mode is observed as quasi cleavage.