Quantification of stress history in type 304L stainless steel using positron annihilation spectroscopy

Thomas W. Walters; Leon C. Walters; Marco P. Schoen; D. Subbaram Naidu; Charles Dickerson; Ben C. Perrenoud

doi:10.1016/j.matchar.2011.02.004

Quantification of stress history in type 304L stainless steel using positron annihilation spectroscopy

Thomas W. Walters, Leon C. Walters, Marco P. Schoen, D. Subbaram Naidu, Charles Dickerson, Ben C. Perrenoud

Electrical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Five Type 304L stainless steel specimens were subjected to incrementally increasing values of plastic strain. At each value of strain, the associated static stress was recorded and the specimen was subjected to positron annihilation spectroscopy (PAS) using the Doppler Broadening method. A calibration curve for the 'S' parameter as a function of stress was developed based on the five specimens. Seven different specimens (blind specimens labeled B1-B7) of 304L stainless steel were subjected to values of stress inducing plastic deformation. The values of stress ranged from 310 to 517 MPa. The seven specimens were subjected to PAS post-loading using the Doppler Broadening method, and the results were compared against the developed curve from the previous five specimens. It was found that a strong correlation exists between the 'S' parameter, stress, and strain up to a strain value of 15%, corresponding to a stress value of 500 MPa, beyond which saturation of the 'S' parameter occurs.

Original language	English (US)
Pages (from-to)	398-401
Number of pages	4
Journal	Materials Characterization
Volume	62
Issue number	4
DOIs	https://doi.org/10.1016/j.matchar.2011.02.004
State	Published - Apr 2011

Bibliographical note

Funding Information:
This submitted manuscript was authored by a contractor of the U.S. Government under DOE Contract No. DE-AC07-05ID14517. Accordingly, the U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for U.S. Government purposes.

Keywords

304L stainless steel
Bremsstrahlung
Nondestructive evaluation
Positron spectroscopy
Stress history

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title = "Quantification of stress history in type 304L stainless steel using positron annihilation spectroscopy",

abstract = "Five Type 304L stainless steel specimens were subjected to incrementally increasing values of plastic strain. At each value of strain, the associated static stress was recorded and the specimen was subjected to positron annihilation spectroscopy (PAS) using the Doppler Broadening method. A calibration curve for the 'S' parameter as a function of stress was developed based on the five specimens. Seven different specimens (blind specimens labeled B1-B7) of 304L stainless steel were subjected to values of stress inducing plastic deformation. The values of stress ranged from 310 to 517 MPa. The seven specimens were subjected to PAS post-loading using the Doppler Broadening method, and the results were compared against the developed curve from the previous five specimens. It was found that a strong correlation exists between the 'S' parameter, stress, and strain up to a strain value of 15%, corresponding to a stress value of 500 MPa, beyond which saturation of the 'S' parameter occurs.",

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AU - Dickerson, Charles

AU - Perrenoud, Ben C.

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N2 - Five Type 304L stainless steel specimens were subjected to incrementally increasing values of plastic strain. At each value of strain, the associated static stress was recorded and the specimen was subjected to positron annihilation spectroscopy (PAS) using the Doppler Broadening method. A calibration curve for the 'S' parameter as a function of stress was developed based on the five specimens. Seven different specimens (blind specimens labeled B1-B7) of 304L stainless steel were subjected to values of stress inducing plastic deformation. The values of stress ranged from 310 to 517 MPa. The seven specimens were subjected to PAS post-loading using the Doppler Broadening method, and the results were compared against the developed curve from the previous five specimens. It was found that a strong correlation exists between the 'S' parameter, stress, and strain up to a strain value of 15%, corresponding to a stress value of 500 MPa, beyond which saturation of the 'S' parameter occurs.

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Quantification of stress history in type 304L stainless steel using positron annihilation spectroscopy

Abstract

Bibliographical note

Keywords

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