Characterization of Residual Stress as a Function of Friction Stir Welding Parameters in Oxide Dispersion Strengthened (ODS) Steel MA956

Brewer, Luke N.; Bennett, Martin S.; Baker, B. W.; Payzant, E. Andrew; Kolbus, Lindsay M.

doi:10.1016/j.msea.2015.09.020

Title: Characterization of Residual Stress as a Function of Friction Stir Welding Parameters in Oxide Dispersion Strengthened (ODS) Steel MA956

Journal Article · Tue Sep 08 00:00:00 EDT 2015 · Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing

DOI:https://doi.org/10.1016/j.msea.2015.09.020· OSTI ID:1215572

Brewer, Luke N. ^[1]; Bennett, Martin S. ^[1]; Baker, B. W. ^[1]; Payzant, E. Andrew ^[2]; Kolbus, Lindsay M. ^[2]

Naval Postgraduate School, Monterey, CA (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

This article characterizes the residual stresses generated by friction stir welding of oxide dispersion strengthened steel MA956 over a series of welding conditions. A plate of MA956 steel was friction stir welded at three conditions: 500 rpm/25 millimeters per minute (mmpm), 400 rpm/50 mmpm and 400 rpm/100 mmpm. The residual stresses across these welds were measured using both x-ray and neutron diffraction techniques. Longitudinal residual stresses up to eighty percent of the yield strength were observed for the 400 rpm/100 mmpm condition. Increasing the traverse rate while holding the rotational speed fixed increased the residual stress levels in the stir zone and at the stir zone-thermomechanically affected zone interface. The stress profiles displayed the characteristic M shape, and the asymmetry between advancing and retreating stress peaks was limited, occurring mainly on the root side of the weld. The large magnitude of the stresses was maintained throughout the thickness of the plates.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC05-00OR22725; AC52-07NA27344

OSTI ID:: 1215572

Alternate ID(s):: OSTI ID: 1250066

Journal Information:: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing, Vol. 647; ISSN 0921-5093

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 25 works

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Cited By (2)

Microstructure and Mechanical Characterization of Friction-Stir-Welded 316L Austenitic Stainless Steels Ramesh, R.; Dinaharan, I.; Kumar, Ravi Journal of Materials Engineering and Performance, Vol. 28, Issue 1 https://doi.org/10.1007/s11665-018-3802-z	journal	December 2018
Micro-magnetic analysis of friction stir welded steel plates Raja, Avinash Ravi; Khan Yusufzai, M. Z.; Vashista, M. The International Journal of Advanced Manufacturing Technology, Vol. 97, Issue 5-8 https://doi.org/10.1007/s00170-018-2094-7	journal	May 2018

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Title: Characterization of Residual Stress as a Function of Friction Stir Welding Parameters in Oxide Dispersion Strengthened (ODS) Steel MA956

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