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首页> 外文期刊>Archives of Metallurgy and Materials >MICROSTRUCTURE AND TEXTURE DEVELOPMENT IN Ag-Cu ALLOYS SUBJECTED TO SEVERE PLASTIC DEFORMATION
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MICROSTRUCTURE AND TEXTURE DEVELOPMENT IN Ag-Cu ALLOYS SUBJECTED TO SEVERE PLASTIC DEFORMATION

机译：严重塑性变形对Ag-Cu合金的微观组织和组织发展

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摘要

In this work, modification of microstructure and texture development in Ag and Ag-Cu system alloys (Ag - 4 percent wt. Cu, Ag - 12 percent wt. Cu) subjected to Severe Plastic Deformation (SPD) was analysed. Rods of 15 mm diameter were the starting material for the experiment, they were obtained with the extrusion-torsion (ET) method. Next, the rods were subject to deformation by hydrostatic extrusion (HE) (epsilon = 3.2) and 3 times subjected to Equal Channel Angular Pressing (ECAP) - epsilon = 3.4. As a result of the tests performed, it was found out that the alloys examined, subjected to SPD, displayed a high refinement of the microstructure, which led to a significant improvement of mechanical properties. The microstructure of materials produced by SPD strongly depends on the technological parameters of deformation. In the initial state (ET deformation) all of the alloys exhibited a fibrous character of texture. A similar fibrous texture characteristic was also found after HE, whereas after the ECAP the initial texture was completely changed. In all methods of deformation, the Ag sample shows a very strong texture comparison to Ag - 4 percent wt. Cu and Ag - 12 percent wt. Cu.
机译：在这项工作中，分析了经受严重塑性变形（SPD）的Ag和Ag-Cu系合金（Ag-4％铜，Ag-12％铜）的微观结构和织构发展。直径15毫米的棒是实验的起始材料，它们是通过挤压－扭转（ET）方法获得的。接下来，通过静水挤压（HE）（ε= 3.2）使棒变形，并进行3次等通道角挤压（ECAP）-ε= 3.4。作为进行测试的结果，发现经受SPD的所检验的合金显示出微观结构的高度细化，这导致机械性能的显着改善。 SPD生产的材料的微观结构在很大程度上取决于变形的技术参数。在初始状态（ET变形）中，所有合金均表现出纤维状的织构特征。 HE后也发现了类似的纤维质地特征，而ECAP之后，初始质地被完全改变。在所有变形方法中，Ag样品都显示出与Ag相比非常强的质地-4％wt。铜和银-12％wt。铜

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