IOS Press, Journal of Neutron Research, 1-3(12), p. 141-145
DOI: 10.1080/10238160410001734595
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The macroscopic stress distribution across a Zircaloy-4 (Zr-4) GTAW weld was measured by time-of-flight neutron diffraction at the SMARTS diffractometer at Los Alamos National Laboratory. Time-of-flight diffraction enabled the measurement of strain for all the available reflections permitted by the rolling texture of the plate and its modification in the weld (melted) and heat-affected zones. Reference lattice spacings were measured on coupons cut from an adjacent section of the weld. A maximum longitudinal stress of [Formula: See Text] was observed along the weld centre line, compared with the plate 0.2% proof stress of 390 MPa. A maximum transverse stress of [Formula: See Text] was observed on the weld centre-line falling to zero at the edge of the plate.