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Micro-indentation of aluminum processed by equal channel angular extrusion

机译:等通道角挤压加工的铝微压痕

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摘要

The near-surface deformation of equal-channel angular extruded (ECAE) pure aluminum was investigated using the micro-indentation technique. Compared with fully annealed Al samples, there is a distinguishable difference in the indentation deformation. The unloading slope of the ECAE deformed Al after a short unloading period was found to be less than that of the annealed samples due to plastic recovery. Work hardening was observed, which depended on the history of local deformation. A new relationship between the plastic energy dissipated in the indentation and the applied load was derived, which is supported by the experimental results.
机译:使用微压痕技术研究了等通道角挤压(ECAE)纯铝的近表面变形。与完全退火的铝样品相比,压痕变形存在明显区别。由于塑性恢复,发现短时间卸载后ECAE变形Al的卸载斜率小于退火样品的卸载斜率。观察到加工硬化,这取决于局部变形的历史。得出了压痕中耗散的塑性能量与施加的载荷之间的新关系,这得到了实验结果的支持。

著录项

  • 来源
    《Journal of Materials Research》 |2004年第4期|p.1243-1248|共6页
  • 作者单位

    Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

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