The effects of strain rate on the dislocation type and dislocation configure of TA15alloy were investigated. The experimental results show that the operating dislocation type changes from (C) type to (C) and (a) + (C) type with increasing strain rate under the deformation condition of 900 ℃, 60% strain. Under the condition of 900 ℃, 60% strain and 0.001/s strain rate, lots of orientate dislocation cellular configurations and sub-grains, many dislocations pile up before sub boundary.When the strain rate increases to 0.l/s, some dislocations exhibit curved and dislocation tangles and pile-ups can be found, suggesting more dislocations and much stronger interactions among dislocations.
参考文献
| [1] | 李兴无,沙爱学,张旺峰,储俊鹏,马济民.TA15合金及其在飞机结构中的应用前景[J].钛工业进展,2003(04):90-94. |
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