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X-ray Fractography on Fatigue Fractured Surface of Austenitic Stainless Steel

Published online by Cambridge University Press:  06 March 2019

Zenjiro Yajima ,
Hideki Tokuyama ,
Yasuo Kibayashi  and
Yukio Hirose
Zenjiro Yajima
Affiliation:
Department of Mechanical Engineering, Kanazawa Institute of Technology 7-1 Oogigaoka, Nonoichi, Kanazawa 921, Japan
Hideki Tokuyama
Affiliation:
Graduate School, Kanazawa Institute of Technology 7-1 Oogigaoka, Nonoichi, Kanazawa 921, Japan
Yasuo Kibayashi
Affiliation:
Department of Materials Science, Kanazawa University Kakuma-machi, Kanazawa 920-11, Japan
Yukio Hirose
Affiliation:
Department of Materials Science, Kanazawa University Kakuma-machi, Kanazawa 920-11, Japan
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Extract

X-ray diffraction observation of the material internal structure beneath fracture surfaces provide fracture analysis with useful information to investigate the conditions and mechanisms of fracture. X-ray fractography is a generic name given to this technique.

In the present study, X-ray fractography was applied to fatigue fracture surfaces of austenitic stainless steel (AISI 304) which consisted of solution treatment. The fatigue tests were carried out on compact tension (CT) specimens. The plastic strain on the fracture surface was estimated from measuring the line broadening of X-ray diffraction profiles. The line broadening of X-ray diffraction profiles was measured on and beneath fatigue fracture surfaces. The depth of the plastic zone left on fracture surfaces was evaluated from the line broadening. The results are discussed on the basis of fracture mechanics.

Type
V. Residual Stress, Crystallite Size and rms Strain Determination by Diffraction Methods
Information
Advances in X-Ray Analysis , Volume 38: Forty-third Annual Conference on Applications of X-ray Analysis , 1994 , pp. 443 - 453
Copyright
Copyright © International Centre for Diffraction Data 1994

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References

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