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 1 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
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Tensile behavior of bulk nanocrystalline aluminum synthesized by hot extrusion of ball-milled powders. / Choi, H. J.; Lee, S. W.; Park, J. S.; Bae, DongHyun.
In: Scripta Materialia, Vol. 59, No. 10, 01.11.2008, p. 1123-1126.Research output: Contribution to journal › Article
TY - JOUR
T1 - Tensile behavior of bulk nanocrystalline aluminum synthesized by hot extrusion of ball-milled powders
AU - Choi, H. J.
AU - Lee, S. W.
AU - Park, J. S.
AU - Bae, DongHyun
PY - 2008/11/1
Y1 - 2008/11/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=51349150593&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=51349150593&partnerID=8YFLogxK
U2 - 10.1016/j.scriptamat.2008.07.030
DO - 10.1016/j.scriptamat.2008.07.030
M3 - Article
VL - 59
SP - 1123
EP - 1126
JO - Scripta Materialia
JF - Scripta Materialia
SN - 1359-6462
IS - 10
ER -