• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Engineering and Performance >A Comparison Between ECAP and Conventional Extrusion for Consolidation of Aluminum Metal Matrix Composite
【24h】

A Comparison Between ECAP and Conventional Extrusion for Consolidation of Aluminum Metal Matrix Composite

机译：ECAP与常规挤压成型的铝基金属复合材料的比较

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study, two powder consolidation techniques, equal channel angular pressing (ECAP) and extrusion, were utilized to consolidate attritioned aluminum powder and Al-5 vol.% nano-Al_2O_3 composite powder. The effect of ECAP and extrusion on consolidation behavior of composite powder and mechanical properties of subsequent compacts are presented. It is found that three passes of ECAP in tube at 200℃ is capable of consolidating the composite to 99.29% of its theoretical density whereas after hot extrusion of the composite the density reached to 98.5% of its theoretical density. Moreover, extrusion needs higher temperature and pressing load in comparison to the ECAP method. Hardness measurements show 1.7 and 1.2 times higher microhardness for the consolidated composite and pure aluminum after ECAP comparing with the extruded ones, respectively. Microstructural investigations and compression tests demonstrate stronger bonds between the particles after three passes of ECAP than the extrusion. Furthermore, the samples after three passes of ECAP show better wear resistance than the extruded ones.
机译：在这项研究中，采用了两种粉末固结技术，等通道角挤压（ECAP）和挤压，来固结磨耗的铝粉和Al-5 vol。％纳米Al_2O_3复合粉。提出了ECAP和挤压对复合粉末固结行为和后续压坯力学性能的影响。结果表明，在200℃下三遍ECAP试管能够将复合材料固结到其理论密度的99.29％，而热挤出复合材料后，其密度达到其理论密度的98.5％。此外，与ECAP方法相比，挤压需要更高的温度和压力负荷。硬度测量结果表明，经ECAP处理后，固结复合材料和纯铝的显微硬度分别比挤压复合材料高1.7和1.2倍。微观结构研究和压缩测试表明，三遍ECAP处理后，颗粒之间的结合力比挤出作用更强。此外，经过ECAP三遍测试后，样品的耐磨性比挤出样品好。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号