Nanocrystallization and Dissolution of Immiscible Powder Alloys Using High Pressure Torsion

摘要：

Precompacts out of immiscible systems CuCr (75/25 wt%) and WCu (80/20 wt%), respectively, were made by pressing mixed powders and sintering. By applying different strains and hydrostatic pressures of HPT at room temperature, disc-shaped samples with a diameter of 8 mm were produced. They were investigated by Light Microscopy, Scanning-Electron Microscopy using Back-Scattered Electrons, and X-ray Line Profile Analysis. In addition, Vickers microhardness data were collected. Both systems showed the highest microhardness at a shear strain of about y=170. The density (for the case of Cu25Cr) of the consolidated material could be increased to the theoretical value. Microhardness and grain sizes were studied individually for each of the phases, too.

作者: S.Kahofer M.J.Zehetbauer H.Danninger E.Schafler M.Kerber J.Horky

作者单位: Physics of Nanostructured Materials,Faculty of Physics,University of Vienna,Boltzmanngasse 5,A-1090W Physics of Nanostructured Materials,Faculty of Physics,University of Vienna,Boltzmanngasse 5,A-1090W Vienna University of Technology,Institute of Chemical Technologies and Analytics,Getreidemarkt 9/164

会议类型: 国际会议

会议名称: 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)

会议地点: 南京

会议语种:英文

页码: 151-156

在线出版日期: 2011-03-01（万方平台首次上网日期，不代表论文的发表时间）