Nano-Refinement,Nano-Consolidation:Different Fabrication Routes of Nano-Crystalline Aluminium Alloys
The aim of the present work was to compare microstrucrures and mechanical properties of nano-Al alloys fabricated by two different methods: (i) SPD induced grain refinement, (Ⅱ) plastic consolidation of nano-powders or nano-crystalline ribbons. SPD grain refinement has been implemented by hydrostatic extrusion, HE. The ribbons were rapidly solidified using a melt spinning methods. Plastic consolidation of powder and ribbons was conducted by warm extrusion. The results of the studies show that by applying various fabrication routes for a given chemical composition, diverse nano-structures can be obtained, which differ in terms of grain size and shape, grain boundary character and dislocation density. As a result, the alloys also differ significantly in the mechanical properties. The findings are discussed in terms of the possibilities for optimizing properties of the bulk-nano-metals.
Malgorzata Lewandowska Henryk Dybiec Mariusz Kulczyk Jerzy Latuch Krzysztof J.Kurzydlowski
Warsaw University of Technology,Faculty of Materials Science and Engineering,Woloska 141,02-507 Wars AGH University of Science and Technology,Mickiewicza 30,30-059 Krakow,Poland Institute of High Pressure Physics,Polish Academy of Sciences,Sokolowska 29/37,01-142Warsaw,Poland
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
87-90
2011-03-01（万方平台首次上网日期，不代表论文的发表时间）