https://doi.org/10.1051/epjconf/20159401060
Effects of aspect ratio and specimen size on uniaxial failure stress of iron green bodies at high strain rates
1 Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Aichi, 466-8555, Japan
2 Luleå University of Technology, 971 87 Luleå, Sweden
a Corresponding author: k_yuki_0227@yahoo.co.jp
Published online: 7 September 2015
Powder metallurgy is used for the production of a number of mechanical parts and is an essential production method. These are great advantages such as product cost effectiveness and product uniqueness. In general, however parts created by powder metallurgy have low strength because of low density. In order to increase strength as well as density, new techniques such as high-velocity-compaction (HVC) was developed and further investigation has been conducted on improvement of techniques and optimum condition using computer simulation. In this study, the effects of aspect ratio and specimen size of iron green bodies on failure strength of uniaxial compression and failure behavior were examined using a split Hopkinson pressure Bar. The diameters of specimens were 12.5 mm and 25 mm the aspect ratios (thickness/diameter) were 0.8 and 1.2.
© Owned by the authors, published by EDP Sciences, 2015
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
