Residual Stress Characterization of Welded Specimens by Non-Destructive Activation Technique

Authors

Ajit K. Roy, University of Nevada, Las VegasFollow
S. Chanda, University of Nevada, Las VegasFollow
Douglas P. Wells, Idaho State UniversityFollow
A. Ghosh, University of Nevada, Las VegasFollow
Chandan K. Mukhopadhyay, Indira Gandhi Center for Atomic ResearchFollow

Document Type

Article

Publication Date

8-25-2007

Publication Title

Materials Science and Engineering A

Volume

464

Issue

1

First page number:

281

Last page number:

287

Abstract

Welded specimens consisting of Type 304L stainless steel and/or Alloy EP-823 were tested for evaluations of the extent and nature of resultant residual stress in terms of line-shape parameters based on the activation technique associated with positron annihilation spectroscopy. A maximum residual stress was estimated near the welded region of specimens of similar and dissimilar materials. It is suggested that the compressive residual stress in the vicinity of the fusion line of Alloy EP-823 side of the welded specimen may be attributed to the volume increase and plastic strain developed during its rapid cooling and solidification.

Keywords

Activation method; Austenitic and martensitic alloys; Positron annihilation spectroscopy; Welding residual stress

Disciplines

Materials Science and Engineering | Mechanics of Materials | Metallurgy

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Repository Citation

Roy, A. K., Chanda, S., Wells, D. P., Ghosh, A., Mukhopadhyay, C. K. (2007). Residual Stress Characterization of Welded Specimens by Non-Destructive Activation Technique. Materials Science and Engineering A, 464(1), 281-287.