Microstructure of Mo 鈥?47%Re 鈥?0.4%Zr alloys after rolling at room temperature. II. Peculiarities of mechanical twinning and formation of high-angle boundaries between microbands
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- 作者：I. A. Ditenberg (12)
A. N. Tyumentsev (123) tyuments@phys.tsu.ru
Ya. V. Shuba (2) - 关键词：electron microscopy – ; large plastic deformations – ; nanostructured states – ; evaluation of microstructure – ; plastic deformation mechanism – ; submicrocrystalline materials – ; twinning – ; crystal lattice curvature –
- 刊名：Russian Physics Journal
- 出版时间：January 2011
- 出版年：2011
- 期刊代码：99_1064-8887
- 类别：ph
- 卷：53
- 期：8
- 页码：809-817
- 数据来源：sp
摘要
It is shown that the Mo – 47%Re – 0.4%Zr alloy after rolling deformation (ε ≈ 90%) at room temperature exhibits certain characteristic features, such as increased density of deformation defects with considerably faceted noncoherent boundaries and reorientation microbands with a specific range of high-angle disorientations around the direction of the 〈110〉 type. Using the concepts on direct-plus-reverse (along alternative systems) martensitic transformations as the mechanisms of plastic deformation and crystal-lattice reorientation, an analysis of possible mechanisms for formation of these states is made.