Acoustic Emission during Crack Formation in Fe-25Cr-5Al Alloy

Cai Jiamin; Yin Hong

doi:10.13374/j.issn1001-053x.1996.06.019

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Cai Jiamin, Yin Hong. Acoustic Emission during Crack Formation in Fe-25Cr-5Al Alloy[J]. Chinese Journal of Engineering, 1996, 18(6): 581-584. doi: 10.13374/j.issn1001-053x.1996.06.019

Citation:

Cai Jiamin, Yin Hong. Acoustic Emission during Crack Formation in Fe-25Cr-5Al Alloy[J]. Chinese Journal of Engineering, 1996, 18(6): 581-584. doi: 10.13374/j.issn1001-053x.1996.06.019

Cai Jiamin, Yin Hong. Acoustic Emission during Crack Formation in Fe-25Cr-5Al Alloy[J]. Chinese Journal of Engineering, 1996, 18(6): 581-584. doi: 10.13374/j.issn1001-053x.1996.06.019

Citation:

Cai Jiamin, Yin Hong. Acoustic Emission during Crack Formation in Fe-25Cr-5Al Alloy[J]. Chinese Journal of Engineering, 1996, 18(6): 581-584. doi: 10.13374/j.issn1001-053x.1996.06.019

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Acoustic Emission during Crack Formation in Fe-25Cr-5Al Alloy

doi: 10.13374/j.issn1001-053x.1996.06.019

Department of Physics, USTB, Beijing 100083, PRC

Received Date: 1995-12-25
Available Online: 2021-11-13

Abstract

Abstract

The condition of crack formation in a Fe-25Cr-5Al alloy is investigated by acoustic emission and scanning electron microscopy techniques.The result shows that thermal stress induces to produce microcracks in the alloy.Because of the presence of internal stress and permeation of environmental hydrygen,the longitudinal cracks always occurred,and the failure of the alloy is a process of energy release showing by acoustic emission.
- acoustic emission,
- crack formation,
- internal stress Fe-Cr-Al alloy,