| 1 | Effects of Microstructure on the Tensile, Fracture Toughness and Fatigue Behaviour of Gamma Titanium Aluminides显示文摘The effects of microstructure on the deformation and fracture behaviour of two-phase TiAl alloys were investjgated under monotonic and cyclical loading conditions, over a range of temperatu res.The tensile behaviour is analyzed for deformation temperatures between RT and 950℃, Fracture resistance behaviour and toughening mechanisms at RT and 800℃ are analyzed. and the inverse relationship botween ductility and toughness is explained using the crack initiation toughness. The preliminary results of load-controlled fatigue behaviour at 800℃ are interpreted using the tensile behaviour because deformation structure and fracture modes are similar under these two loading | Young- Won (Y-W.) Kim(UES, Inc., Materials Research Division, 4401 Dayton-Xenia Rd., Dayton, OH 45432, USA)(Paper presented at the International Workshop on OrderedIntermetallics 1992, Hangzhou, China) | 1994 | Journal of Materials Science & Technology1994，10，2： | 18 |
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