Journal of Materials Engineering and Performance

, Volume 21, Issue 7, pp 1395–1404

Influence of Elevated Temperature and Stress Ratio on the Fatigue Response of AM60B Magnesium Alloy

Article

DOI: 10.1007/s11665-011-0019-9

Cite this article as:
Nur-Hossain, M. & Taheri, F. J. of Materi Eng and Perform (2012) 21: 1395. doi:10.1007/s11665-011-0019-9

Abstract

The fatigue response of a high pressure die-cast AM60B Mg alloy is studied at room and elevated temperatures. The fatigue tests are conducted with stress ratio of R = 0.1 and frequency of 30 Hz. The main objective is to determine whether elevated temperature would affect the fatigue response of the alloy. In addition, fatigue crack growth characteristics of the alloy is investigated at room temperature. The purpose of this test is to ascertain the capability and accuracy of a finite element approach coupled with the Walker model in assessing the life cycle of the alloy, in consideration of the influence of stress ratio.

Keywords

AM60B magnesium alloy fatigue crack growth rate finite element method linear elastic fracture mechanics scanning electron microscope single edge notch tension 

Nomenclature

CP

Paris model constant

da/dN

Crack growth rate

K

Stress intensity factor

ΔK

Stress intensity factor range

ΔKeq

Effective stress intensity factor range

mp

Paris model exponent

R

Stress ratio

γ

Material parameter

σy

Yield stress

α

Ratio between crack length and width of the specimen

Copyright information

© ASM International 2011

Authors and Affiliations

  1. 1.Department of Civil and Resource EngineeringDalhousie UniversityHalifaxCanada

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