A study of hydrostatic extrusion as a consolidation process for fabricating ultrafine-grained bulk Al–Mg alloy
✍ Scribed by S. Lee; C.Y. Yoon; H.J. Park; S.S. Kim; E.J. Kim; T.H. Choi; K.Y. Rhee
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 641 KB
- Volume
- 191
- Category
- Article
- ISSN
- 0924-0136
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✦ Synopsis
This paper deals with the hydrostatic extrusion process for fabricating an ultrafine-grained bulk Al-Mg alloy. Pre-hipped Al-7.5%Mg alloy was subjected to hot hydrostatic extrusion in order to investigate the potential use of this process as a final consolidation in fabricating the ultrafinegrained material. Tensile properties of the pre-hipped and the hydrostatically extruded materials at temperature of 298-573 K were compared to study their mechanical characteristics. Fairly good ductilities were obtained after hydrostatic extrusion. These characteristics are also consistent with their microstructures in that sub-micron-sized ultrafine grains are dominant in the specimen area and some of the large grains are located and surrounded by small grains.