Abstract
The deformation behavior of bulk nanocrystalline aluminum down to 48 nm in grain size, produced by hot extrusion of ball-milled powders, has been evaluated by compression and tension tests. Isotropic yield stress increases following the Hall-Petch relationship with decreasing grain size down to 70 nm. However, a positive deviation in the relationship is found for grain sizes below 70 nm, and aluminum with a grain size of 48 nm exhibits a superior yield stress of 500 MPa with ductile failure.
| Original language | English |
|---|---|
| Pages (from-to) | 1123-1126 |
| Number of pages | 4 |
| Journal | Scripta Materialia |
| Volume | 59 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2008 Nov |
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
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Choi, H. J., Lee, S. W., Park, J. S., & Bae, D. H. (2008). Tensile behavior of bulk nanocrystalline aluminum synthesized by hot extrusion of ball-milled powders. Scripta Materialia, 59(10), 1123-1126. https://doi.org/10.1016/j.scriptamat.2008.07.030