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Accession number;05A0348917
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| Title;Semi-continuous Casting and Semi-solid Extrusion of Al-10%Mg Alloy Billet Rheocast by Mechanical Stirring |
| Author;
UTANI YASUHIRO
(Toyama Prefectural Univ.)
SUEDA HIROYUKI
(Toyama Univ., Grad. Sch.)
TAKAGI HIDETOSHI
(Toyama Gokin)
MATSUDA KENJI
(Toyama Univ., Fac. of Eng.)
IKENO SUSUMU
(Toyama Univ., Fac. of Eng.)
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Journal Title;Journal of Japan Foundry Engineering Society
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Journal Code:G0096A
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ISSN:1342-0429
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VOL.77;NO.4;PAGE.246-252(2005)
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| Figure&Table&Reference;FIG.11, TBL.1, REF.9 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;A simple mechanical stirring treatment during semi-continuous casting produced small diameter rheocast Al-10mass%Mg alloy billets with a nondendritic globular structure. When small cylindrical specimens machined from rheocast and stirring-free billets were extruded to thin round bars at semi-solid temperatures ranging from 783 to 843 K, the bars extruded from the former specimens had sound surfaces without any cracks even at higher press ram speed of 10 mm/s, in contrast to those with surface cracks of the latter ones. However, both the strength and elongation of bars extruded soundly at higher speed were much lower than those of hot-extruded ones. In order to improve these poor tensile properties, constant quantity of forced-air was blown onto the extruded bars at different positions from the die-outlet during extrusions at 803 K. The best tensile properties equivalent to those for the hot-extruded bar could be obtained by this forced-air cooling at specific air-blowing positions. (author abst.) |
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