engleski

Effect of heat input on residual stress

The article presents bulk residual stress distributions, as measured by neutron diffraction, for the configuration of a single pass gas tungsten are weld bead desposited on to a 10 mm thick X18N9T steel substrase. The resulting microstructures and residual stress distributions are discussed in terms of the differing thermal excursions across each weld. In regions that are austenitised during welding the transformation strain on cooling is shown to compensate in part for thermal contraction strains.

residual stress ; neutron diffraction

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