Effect of mixing method microstructure and hardness of Cu based diamond sawing matrixes
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2015-01-01 |
| Journal | Materials Science and Engineering of Powder Metallurgy |
| Authors | Li Feng |
| Institutions | Lanzhou University of Technology |
Abstract
Section titled āAbstractāThe ultra thin sawing matrixes composites with Cu-based diamond were prepared by uniaxial die pressing and hot pressing technology for different blending methods using Cu-based single element mixed powders as raw materials. The microhardness of Cu-based matrixes, microstructure and composition of hot pressed matrixes were investigated by microhardness tester, OM, SEM and XRD. The microstructure and microhardness of hot pressed Cu-based matrixes were also studied. The results show that more Cu-Sn solid solution is obtained and the hardness of hot pressed Cu-based matrixes increases after ball milling with the same content of metallic powders, and the hardness(HV0.1) increases 19.00(Sn4%) and 21.97(Sn6%) respectively; In contrast, the hardness of hot pressed Cu-based matrixes increases only a little by milling Sn blending with Cu compared with milling all the powders. Sn attaches to Cu after milling, which fabricates more Cu-Sn solid solution. The phenomena of work hardening and a lot of deformation occur in powders, which determine the ratio of cold pressing; with the increase of Sn content from 4% to 6%, the content of Cu-Sn solid solution increases and it leads to the increase of the average hardness(HV0.1) of hot pressed Cu-based matrixes from 72.44, 90.23, 91.44 to 90.12, 109.58, 112.09, respectively.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal Sourceā- DOI: None