Gas forming a V-shape aluminum sheet into a trough of saddle-contour
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 2290-2294 |
Journal / Publication | Journal of Materials Engineering and Performance |
Volume | 21 |
Issue number | 11 |
Online published | 2 Mar 2012 |
Publication status | Published - Nov 2012 |
Externally published | Yes |
Link(s)
Abstract
A sheet metal trough of aluminum alloys is manufactured by gas-forming process at 500 °C. The product with slope walls is of ∼1.2 m long and ∼260 mm opening width, comprising two conical sinks at two ends. The depth of one sink apex is ∼350 mm, which results in the depth/width ratio reaching 1.4. To form such a complex shape with high aspect ratio, a pre-form of V-shape groove is prepared prior to the gas-forming work. When this double concave trough is turned upside down, the convex contour resembles the back of a twin hump camel. The formability of this configuration depends on the gas pressurization rate profile, the working temperature, material's micro-structure, as well as pre-form design. The latter point is demonstrated by comparing two aluminum alloys, AA5182 and SP5083, with nearly same compositions but very different grain sizes.
Research Area(s)
- Camel-back, Saddle-contour, SP5083, Superplastic, Twin humps, V-shape
Citation Format(s)
Gas forming a V-shape aluminum sheet into a trough of saddle-contour. / Lee, Shyong; Lan, Hsien-Chin; Lee, Jye et al.
In: Journal of Materials Engineering and Performance, Vol. 21, No. 11, 11.2012, p. 2290-2294.
In: Journal of Materials Engineering and Performance, Vol. 21, No. 11, 11.2012, p. 2290-2294.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review