FRACTURE-MECHANISM MAPS FOR MATERIALS WHICH CLEAVE - FCC, BCC AND HCP METALS AND CERAMICS

This is the second of two papers on fracture-mechanism maps. In it, a large body of published data is combined with our own observations to construct maps for a number of polycrystalline metals and ceramics: the refractory b.c.c. metals: tungsten, molybdenum, tantalum, niobium and chromium: the h.c.p. metals and alloys: magnesium, Magnox-AL80, Magnox-ZR55, beryllium and rhenium; the high temperature ceramics: MgO, Al2O3, BeO, UO2, SiC, Si3N4; the alkali halides NaCl, KCl, LiF, CaF2; ice, H2O; and the f.c.c. metal, irridium. Certain generalisations about fracture behaviour can be drawn from comparisons of the maps. © 1979.