Fracture : interactions of microstructure, mechanisms and mechanics : proceedings of the symposium sponsored by the Mechanical Metallurgy and the Structural Materials Committees of the Metallurgical Society of AIME and the Flow and Fracture Committee of the American Society for Metals, held February 27-29, 1984, at the 113th AIME Annual Meeting in Los Angeles, California / edited by Joseph M. Wells, John D. Landes.