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| The Microstructures and Textures of the Cold–rolled Ta–7.5%W Alloy Foils |
| WANG Shan, WANG Mingpu, CHEN Chang, XIA Fuzhong, YANG Qiaoran |
| School of Material Science and Engineering, Central South University, Changsha 410083 |
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Cite this article:
WANG Shan WANG Mingpu CHEN Chang XIA Fuzhong YANG Qiaoran. The Microstructures and Textures of the Cold–rolled Ta–7.5%W Alloy Foils. Chin J Mater Res, 2011, 25(5): 476-482.
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Abstract The microstructure and texture in both the annealing and cold–rolled conditions of 140 μm Ta–7.5%W alloy foils were investigated by TEM and orientation distribution function (ODF) analysis. It is found that the main texture components of the annealing and cold–rolled Ta–7.5%W alloys are {001}<110>, {113}<110>, {112}<110> and {111}<110>. In the cold–rolled Ta–7.5%W alloy foils, the dislocation cell structures were formed in both {001}<110> and {113}<110> orientations. There were a lot of equiaxed cell structures with an average size of 500 nm in the grains of {001}<110> texture. The microband structures were developed in the {111}<110> grains, which are distributed parallelly in the grains with a mean space length of 200 nm. The microbands consist of GNBs and IDBs. In the GNBs, there were a set of high density parallel dislocations with the spacing of about 5 nm.
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Received: 29 June 2011
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| Fund: Supported by National High Technology Research and Development Program of China No.2006AA03Z517 and Natural Science Foundation of Hunan Province No.05JJ30095. |
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