Lattice strains have been measured by neutron diffraction in low and high carbon steels subjected to uniaxial tensile loading. Lueders straining is accompanied in the high carbon steel by rapid transfer of load from the ferrite to the cementite phase, and in both steels by a redistribution in strain between the individual matrix grain families. The high carbon steel behaviour is interpreted in terms of matrix plasticity in the presence of a plastically hard second phase. The responses of individual hkl reflections exhibit identifiable similarities between the matrix behaviour in the high and low carbon cases. Measurements of residual strain support the conclusions drawn from the tensile loading results.
展开▼
