EPJ Web of Conferences
Volume 94, 2015DYMAT 2015 - 11th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
|Number of page(s)||4|
|Published online||07 September 2015|
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: email@example.com
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
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