Development of Nanostructured Armco-Fe by Equal Channel Angular Extrusion (ECAE)
Development of Nanostructured Armco-Fe by Equal Channel Angular Extrusion (ECAE)
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DOI：
10.1080/10426914.2012.663128
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发表时间：
2012-06
影响因子：
4.8
通讯作者：
C. Luis;I. Puertas;R. Luri;J. Leon;D. Salcedo;I. Pérez
中科院分区：
文献类型：
--
作者：
C. Luis;I. Puertas;R. Luri;J. Leon;D. Salcedo;I. Pérez
等通道转角挤压或压制（ECAE/ECAP）工艺在过去几年中已经发展，以便通过剧烈塑性变形获得纳米结构材料。这些应用主要集中在轻合金上，而其在钢铁上的应用并不常见。这是由于其ECAE加工所带来的困难，因为需要更高的加工力值。在本研究中，当Armco-Fe在室温下通过ECAE处理时所实现的结果被示出。此外，在机械性能（屈服应力，极限拉伸强度和断裂伸长率）的变化的比较研究显示，当采用不同的热处理。还示出了热处理的特定组合，其导致相对于起始材料更高的伸长率和机械强度值。此外，所获得的结果进行了分析，通过光学和扫描电子显微镜技术。
The Equal Channel Angular Extrusion or Pressing (ECAE/ECAP) process has been developed over these last years in order to obtain nanostructured materials by means of severe plastic deformation. These applications have been mainly focused on light alloys while its application to iron and steel has not been so common. This is due to the difficulties that their ECAE processing implies, as much higher values for the processing force are required. In this present study, the results achieved when Armco-Fe is processed by ECAE at room temperature are shown. In addition, a comparative study on the variation in the mechanical properties (yield stress, ultimate tensile strength, and elongation at break) is shown when different thermal treatments are employed. Specific combinations are also shown of the thermal treatments which lead to a higher value of elongation and mechanical strength in relation to the starting material. Furthermore, an analysis of the obtained results is made by optical and scanning electron microscopy techniques.