Transactions of Nonferrous Metals Society of China
JOURNAL OF RAILWAY SCIENCE AND ENGINEERING
|Vol. 2 No. 1 February 1992|
（Central South University of Technology, Changsha 410083, China）
Abstract:The dislocation structures of arc-melted, near-equiatomic TiAI alloys containing 1.5-2.0 wt.一%manganese were analysed and compared with those of binary TiAI alloy processed in a similar fashion. It was found that the pinning effect of a / 6 [ 112] partial dislocations was eliminated by Mn addition, as a result, the movement of a and a/ 2 superdislocations and twinning and played an important role in the plastic deformation and increased the ductility of TiAI alloys. In addition, the workability of the Mn-ductilized TiAI alloy was evaluated with hot extrusion and forging.
Key words: TiAI alloys, Plastic deformation, dislocation structure