Measured Biaxial Residual Stress Maps in a Stainless Steel Weld

Journal Article · Wed Sep 16 04:00:00 UTC 2015 · Journal of Nuclear Engineering and Radiation Science

DOI: https://doi.org/10.1115/1.4029927 · OSTI ID:1329566

Olson, Mitchell D. ^[1]; Hill, Michael R. ^[1]; Patel, Vipul I. ^[2]; Muransky, Ondrej ^[2]; Sisneros, Thomas A. ^[3]

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1. Univ. of California, Davis, CA (United States). Dept. of Mechanical and Aerospace Engineering
2. Australian Nuclear Science and Technology Organisation (ANSTO), Kirrawee-Sydney, NSW (Australia). Inst. of Materials Engineering
3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Here, this paper describes a sequence of residual stress measurements made to determine a two-dimensional map of biaxial residual stress in a stainless steel weld. A long stainless steel (316L) plate with an eight-pass groove weld (308L filler) was used. The biaxial stress measurements follow a recently developed approach, comprising a combination of contour method and slitting measurements, with a computation to determine the effects of out-of-plane stress on a thin slice. The measured longitudinal stress is highly tensile in the weld- and heat-affected zone, with a maximum around 450 MPa, and compressive stress toward the transverse edges around ₋250 MPa. The total transverse stress has a banded profile in the weld with highly tensile stress at the bottom of the plate (y = 0) of 400 MPa, rapidly changing to compressive stress (at y = 5 mm) of ₋200 MPa, then tensile stress at the weld root (y = 17 mm) and in the weld around 200 MPa, followed by compressive stress at the top of the weld at around ₋150 MPa. Finally, the results of the biaxial map compare well with the results of neutron diffraction measurements and output from a computational weld simulation.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC52-06NA25396
• OSTI ID: 1329566
• Report Number(s): LA-UR-15--21095
• Journal Information: Journal of Nuclear Engineering and Radiation Science, Journal Name: Journal of Nuclear Engineering and Radiation Science Journal Issue: 4 Vol. 1; ISSN 2332-8983
• Publisher: ASMECopyright Statement
• Country of Publication: United States
• Language: English