DETERMINATION OF THE ENERGIES OF [001]-SYMMETRICAL TILT BOUNDARIES INCU FROM THE SHAPE OF BOUNDARY SIO2 PARTICLES

The misorientation dependence of the boundary energies of [001] symmet ric tilt boundaries in Cu has been experimentally determined by a SiO2 particle observation method. This method has no drawbacks which are i nevitable in boundary grooving and trijunction methods. In the energy- misorientation angle diagram, four deep cusps exist at Sigma = 17, (41 0), at Sigma = 5, (310), at Sigma = 5, (210) and at Sigma = 17, (530), and a shallow cusp at Sigma = 25, (430).