Superplastic forming and foaming process for porous aluminum plates

被引:1
|
作者
Kitazono, K. [1 ]
Kamimura, S. [2 ]
Sato, E. [2 ]
Kuribayashi, K. [2 ]
机构
[1] Tokyo Metropolitan Univ, Grad Sch Syst Design, 6-6 Asahigaoka, Hino, Tokyo 1910065, Japan
[2] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2298510, Japan
来源
SUPERPLASTICITY IN ADVANCED MATERIALS | 2007年 / 551-552卷
关键词
roll-bonding; foaming; 5083 aluminum alloy; sandwich panel; blow-forming;
D O I
10.4028/www.scientific.net/MSF.551-552.23
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
A new application of superplasticity has been developed in the field of porous metals. Porous metals manufactured through a liquid-state foaming process often include large pores and inhomogeneous pore distribution which decrease in the mechanical properties. A solid-state foaming process enables to suppress the collapse and coalescence of pores, but high porosity is not achieved due to the large flow stress. Superplastic flow during the solid-state foaming is effective to accelerate the foaming rate and to increase the porosity, Superplastic 5083 aluminum alloy sheets are used as a starting material for manufacturing of porous aluminum. A preform plate containing titanium hydride particles as a foaming agent is produced through roll-bonding processing. Porous aluminum with small pores and relatively high porosity is manufactured through superplastic foaming process. A thin sandwich panel with a porous aluminum core and porous bulge structures can be manufactured by utilizing the superplastic flow. This technique of superplastic forming and foaming (SPFF) processing has a potential for near net-shape forming as well as evaluation of the solid-state foaming of porous metals.
引用
收藏
页码:23 / +
页数:3
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