The Evolution of Homogeneity during Processing of Aluminium Alloys by HPT
Disks of a commercial purity aluminium Al1050 alloy and Al-l%Mg alloy were processed by highpressure torsion (HPT) at room temperature for up to a maximum of 5 turns under a pressure of 6 GPa. Following processing, hardness measurements were recorded across the surfaces of the disks. These measurements showed low values of hardness at the center and high values near the edges of the disks and the hardness increased in both alloys with increasing numbers of turns. The evolution of homogeneity in hardness was rapid in Al-1050 compared to the Al-l%Mg alloy. After 5 turns of HPT under a pressure of 6 GPa, the hardness was fully homogeneous across the total surface of the Al-1050 disk whereas there was a region of lower hardness around the center of the Al-l%Mg disk. The results reveal the significant difference between both alloys where the higher rate of recovery in the Al-1050 alloy leads to a rapid evolution of the hardness homogeneity.
Saleh N.Alhajeri Megumi Kawasaki Nong Gao Terence G.Langdon
Materials Research Group,School of Engineering Sciences University of Southampton,Southampton SO17 1 Departments of Aerospace & Mechanical Engineering and Materials Science University of Southern Calif Materials Research Group,School of Engineering Sciences University of Southampton,Southampton SO17 1 Materials Research Group,School of Engineering Sciences University of Southampton,Southampton SO17 1
国际会议
5th International Conference on Nanomaterials by Severe Plastic Deformation(第五届剧烈塑性变形纳米材料国际会议)
南京
英文
277-282
2011-03-01（万方平台首次上网日期，不代表论文的发表时间）