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Residual Stresses Near SCC Fracture Surfaces of AISI 4340 Steel

Published online by Cambridge University Press:  06 March 2019

Zenjiro Yajima ,
Masaaki Tsuda ,
Yukio Hirose  and
Keisuke Tanaka
Zenjiro Yajima
Affiliation:
Department of Mechanical Engineering, Kanazawa Institute of Technology, 7-1 Oogigaoka, Nonoichi, Kanazawa 921, Japan
Masaaki Tsuda
Affiliation:
Department of Materials Science, Kanazawa University 1-1 Marunouchi, Kanazawa 920, Japan
Yukio Hirose
Affiliation:
Department of Materials Science, Kanazawa University 1-1 Marunouchi, Kanazawa 920, Japan
Keisuke Tanaka
Affiliation:
Department of Engineering Science, Kyoto University Yoshida-hommachi, Sakyo-ku, Kyoto 606, Japan
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Extract

X-ray diffraction observation of the material beneath the fracture surface provides failure analysists with useful information to judge the mechanical condition of fracture.

In the present paper, stress corrosion cracking (SCC) tests were conducted by using the bluntly notched compact tension (CT) specimens of 200°C tempered AISI 4340 steel in a 3.5 NaCl solution etwixonmeat. The distribution of the residual stress beneath the fracture surface near the root of the notch was measured with the X-ray diffraction technique. The effect of the notch root radius on crack nucleation with stress corrosion was discussed on the bases of the results of X-ray observation.

Type
VII. X-Ray Stress Analysis
Information
Advances in X-Ray Analysis , Volume 32: Thirty-Seventh Annual Conference on Applications of X-ray Analysis, August 1-5, 1988 , 1988 , pp. 451 - 458
Copyright
Copyright © International Centre for Diffraction Data 1988

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References

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