| 钛铝合金中正常位错的特性 |
| |
| 引用本文： | 黄伯云.钛铝合金中正常位错的特性[J].中南大学学报(自然科学版),1988(5). |
| |
| 作者姓名： | 黄伯云 |
| |
| 作者单位： | 中南矿冶学院粉末冶金研究所 |
| |
| 摘 要： | 此研究探讨了钛铝合金中在没有超位错存在时的正常位错的特性。在少量塑性变形时,正常位错就发生缠结,正常位错对塑性变形贡献很少,大量的塑性变形主要靠孪晶过程,正因为如此,钛铝合金就容易产生脆性断裂。然而,γ钛铝合金中钛铝的原子百分数比却能改变位错的许多特性。
|
| 关 键 词： | 钛基合金 铝合金 脆性断裂 位错运动 塑性变形 孪晶 压缩试验 单晶 Ti-Al合金 |
THE BEHAVIOR OF THE ORDINARY DISLOCATIONS IN TIAL |
| |
| Huang Baiyun Powder Metallurgg Research Institute.THE BEHAVIOR OF THE ORDINARY DISLOCATIONS IN TIAL[J].Journal of Central South University:Science and Technology,1988(5). |
| |
| Authors: | Huang Baiyun Powder Metallurgg Research Institute |
| |
| Institution: | Huang Baiyun Powder Metallurgg Research Institute |
| |
| Abstract: | The behavior of the ordinary dislocations in TiAl is investigated without
superdislocations.At small plastic strains the ordinary dislocations are tangled.
They can not contribute large strains to accommodate plastic deformation.Twinning
takes an important role in higher strains.Therefore brittle fracture of TiAl is
introduced.But the observed dislocation behavior varies with the TiAl ratio of the
gamma phase. |
| |
| Keywords: | titanium-base alloys aluminium alloys brittle fracture dislocation motion plastic deformation twinning compression tests single crystals TiAl alloys |
| 本文献已被 CNKI 等数据库收录！ |
