Effect of Equal-Channel Angular Pressing Process on Properties of 1050 Al Alloy
Effect of Equal-Channel Angular Pressing Process on Properties of 1050 Al Alloy
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DOI：
10.1080/10426914.2012.663150
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发表时间：
2012-05
影响因子：
4.8
通讯作者：
M. Soliman;E. El-Danaf;A. Almajid
中科院分区：
文献类型：
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作者：
M. Soliman;E. El-Danaf;A. Almajid
使用 A 和 BC 两种路线对粗晶微观结构为 600 µm 的退火 1050 铝样品进行等通道角挤压 (ECAP) 加工。使用这两种路线，将样品通过内角为 90o 的模具进行最多四次加工。电子背散射衍射 (EBSD) 技术用于研究 ECAP 加工后形成的微观结构。确定了细胞尺寸分布、定向错误和高角度边界的比例。微观结构研究是在挤压方向和剪切面上进行的。产生的微观结构取决于所使用的路线和道次数。使用 ECAP 在挤压方向生产的样品的拉伸和压缩样品进行了机械行为研究。观察到强度增强，但拉伸和压缩之间具有各向异性行为。拉伸试样断口表面韧窝的尺寸和分布受ECAP路径和道次的影响。
Annealed 1050 Al samples with coarse-grained microstructure of 600 µm were equal-channel angular pressing (ECAP) processed using two routes, A and BC. The samples were processed up to four passes through a die with an internal angle of 90o using both routes. Electron back-scattered diffraction (EBSD) technique was used to study the developed microstructure after ECAP processing. The cell size distribution, misorientation, and the fraction of high angle boundaries were determined. The microstructure study was conducted on both the extrusion direction and the shear plane. The produced microstructure depends on the used route and number of passes. A study of mechanical behavior was conducted by using tensile and compression specimens from the specimens produced by ECAP in the extrusion direction. Enhanced strength was observed but with anisotropic behavior between tension and compression. The dimple size and distribution on fractured surface of tensile specimens was affected by the ECAP route and number of passes.