Scaling up Segal's principle of Equal-Channel Angular Pressing
Scaling up Segal's principle of Equal-Channel Angular Pressing
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DOI：
10.1016/j.matdes.2016.02.067
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发表时间：
2016-05-05
影响因子：
8.4
通讯作者：
Wagner, Martin F. -X.
中科院分区：
文献类型：
--
作者：
Frint, Stephanie;Hockauf, Matthias;Wagner, Martin F. -X.
本文主要研究等通道转角挤压(ECAP)从常规的实验室规模(坯料横截面15×15 mm(2))到大尺寸(50×50 mm(2))的缩尺。我们研究了在两个相同的ECAP模具(但具有不同的截面)中由ECAP生产的纯铜坯，这两个模具已经进行了优化，以提供更低的接触摩擦。为了表征工艺参数和所得到的性能，在两种刻度上对坯料分别进行4次和8次加工。通过硬度测试和EBSD测量进行了机械和微观结构表征。不同规模生产的材料表现出非常相似的性能。略有顶部到底部的硬度梯度(
This paper focuses on scaling of Equal-Channel Angular Pressing (ECAP) from conventional, laboratory scale (billet cross section 15 x 15 mm(2)) to large scale (50 x 50 mm(2)). We study pure copper billets produced by ECAP in two identical ECAP-dies (but with different cross-sections) that have been optimized to provide reduced contact friction. In order to characterize processing parameters and the resulting properties, the billets are processed by 4 and 8 passes on both scales. Mechanical and microstructural characterization is performed by hardness testing and EBSD measurements. The materials produced in the different scales show very similar properties. A slight top to bottomhardness gradient (