Current Practice and Future Opportunities for Two-Turn ECAP
Current Practice and Future Opportunities for Two-Turn ECAP
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两匝 ECAP 的当前实践和未来机遇
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
L. Olejnik
中科院分区：
文献类型：
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作者：
A. Rosochowski;L. Olejnik
等通道转角挤压（ECAP）是一种最常用的用于细化金属晶粒组织的剧烈塑性变形工艺。然而，其应用表现出生产率低和材料利用率差的固有问题。为了解决这些问题，可以使用具有两圈的ECAP通道。提供了该配置的历史示例和当前应用，包括工艺的路线BC版本。路线C版本的两个回合ECAP说明了一个按比例放大的过程，用于处理平方英寸的横截面铝坯料。为了解决另一个问题，即短坯料，建议未来的应用两转ECAP是基于增量ECAP的新工艺;它使解耦的材料和其变形的进给，从而大大降低了坯料，板材和片材的进给力。
Equal channel angular pressing (ECAP) is the most popular severe plastic deformation process used to refine grain structure of metals. However, its application exhibits inherent problems of low productivity and poor utilization of material. In order to address these problems, the ECAP channel with two-turns can be used. Historical examples and current applications of this configuration are provided including route BC version of the process. Route C version of two-turn ECAP is illustrated with a scaled-up process used for processing square inch cross section aluminium billets. To address another problem, that of short billets, it is suggested that future applications of two-turn ECAP are based on the new process of incremental ECAP; it enables decoupling feeding of the material and its deformation and thus reduces dramatically the feeding force for billets, plates and sheets.