| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5456139 | Materials Science and Engineering: A | 2017 | 8 Pages |
Abstract
In the present work, ultrafine-grained Al-Zn-Mg alloy produced by high energy ball milling and Spark Plasma Sintering was synthesized. The Hall-Petch strengthening due to grain refinement (about 150 nm) is preserved and the Orowan's effect attributed to the presence of the hardening phase η' is obtained in a single-step during the sintering. Maximum compression stresses as high as 736 MPa and 830 MPa were reached in quasistatic and dynamic conditions respectively. Hardness was increased from 124 HV5 for a consolidated coarse grained material to 196 HV for a consolidated ultrafine-grained (UFG) material. The mechanical properties obtained in this study were all superior to the ones of the reference AA7020-T651.
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Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
H. Queudet, S. Lemonnier, E. Barraud, J. Guyon, J. Ghanbaja, N. Allain, E. Gaffet,