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X-Ray Fractography on Fatigue Fracture Surfaces of Mg-9mass%Al-1mass%Zn Alloy

Published online by Cambridge University Press:  06 March 2019

Yoichi Kishi ,
Shigenobu Takahashi  and
Yukio Hirose
Yoichi Kishi
Affiliation:
Material Research and Testing Center, Nippon Institute of Technology 4-1 Gakuendai, Miyashiro-machi, Saitama 345, Japan
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X-ray diffraction observation of fracture surfaces provides fracture analysis with useful information on the mechanisms and mechanical conditions of fracturing. This method is called ” X-ray fractography “ and has been developed especially in Japan as a new engineering tool for fracture analysis.

In the present paper, X-ray fractography is applied to fatigue fracture surfaces of AZ91 magnesium alloy which are used for machine parts. The X-ray stress constant, H,was first determined. The fatigue tests were conducted by using compact tension ( CT ) specimens of AZ91 magnesium alloy. The residual stress was measured on and beneath the fatigue fracture surface. The depth of the plastic zone left on the fatigue fracture surface was evaluated from the residual stress distribution. The results are discussed on the basis of fracture mechanics.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 39: Forty-Fourth Annual Conference on Applications of X-ray Analysis, July 31 - August 4, 1995 , 1995 , pp. 491 - 498
Copyright
Copyright © International Centre for Diffraction Data 1995

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References

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