THE DETERMINATION OF THE PROFILE OF MACROSTRESS AND THERMAL MISMATCH STRESS THROUGH AN AL SICP COMPOSITE PLATE FROM THE AVERAGE RESIDUAL STRAINS MEASURED IN EACH PHASE/

Neutron diffraction has been used to measure uniquely the through-thic kness profile of the average triaxial strain in each phase of an Al/Si Cp metal-matrix composite plate which had been quenched after a soluti on treatment at 505 degrees C. The data have been interpreted by model ling the measured strains in terms of three contributions: a long-rang e residual macrostrain held, an elastic mismatch strain; and a thermal mismatch strain. These strains and the associated stresses are descri bed and discussed.