| Issue |
EPJ Web Conf.
Volume 183, 2018
DYMAT 2018 - 12th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
|
|
|---|---|---|
| Article Number | 03006 | |
| Number of page(s) | 4 | |
| Section | Microstructural Effects | |
| DOI | https://doi.org/10.1051/epjconf/201818303006 | |
| Published online | 07 September 2018 | |
https://doi.org/10.1051/epjconf/201818303006
Static and dynamic behaviour of ECAPed copper alloy
1
Agency for Defense Development,
34186
Daejeon
305-600,
Republic of Korea
2
Weapon Systems Engineering, Korea University of Science and Technology,
34113
Daejeon,
Republic of Korea
* Corresponding author: ljpark@add.re.kr
Published online: 7 September 2018
The equal channel angular processing (ECAP) is a severe plastic deformation technique which can produce ultrafine-grained (UFG) alloy. This paper investigate the static and dynamic behaviour of ECAPed OFHC-Cu to evaluate possibility of its application to defence industries. Tensile tests were carried out at two different strain rate (10-3/s, 1/s) using digital image correlation (DIC) technique. High strain rate experiments were conducted using the split Hopkinson pressure bar (SHPB). The results were compared with forged OFHC-Cu and additional heat treated OFHC-Cu after processed by ECAP. Flow stress and strain sensitivity of ECAPed OFHC-Copper were increased compare to forged OFHC-Copper. After ECAPed copper heat treatment, the yield strength decreased with increasing of the average grain size. And numerical simulation of ECAPed copper shaped charge was performed using Autodyn hydrodynamic code.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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