| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 237492 | Powder Technology | 2011 | 6 Pages |
A modified plastic yield function is proposed to predict the consolidation behavior of nanostructured metal powders and metal-matrix nanocomposite powders under uniaxial compaction. The validity of the model is verified for nanocrystalline Al6063 (~ 100 nm) alloy reinforced without and with 0.8 vol.% Al2O3 nanoparticles (~ 25 nm). The plastic deformation propensity of these powders is analyzed by linear compaction equations. The yield stress of the powder compacts is shown to be influenced by the nano-scale grains and the reinforcement nanoparticles.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights► A new model is proposed to study the compressibility of nanostructured/nanocomposite powders. ► The model prediction is in good agreement with experiments, although it overestimates the density of coarse-grained powders at high pressures. ► The yield stress of Al6063 compacts with nanostructured features (reinforced with and without nanoparticles) is reported.
