超塑5083與非超塑5052鋁合金氣壓成形性比較

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超塑5083與非超塑5052鋁合金氣壓成形性比較

Superplasticity Effect Demonstrated by Gas Forming Superplastic 5083 and non-Superplastic 5052 Aluminum Alloy

翁正諴 , Masters　　Advisor：李雄　　

繁體中文

超塑成形；整流罩； superplastic forming ； Fairing Cover

Abstract │ Reference (8) │ Altmetrics

Abstract 〈TOP〉

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This thesis focuses on using superplastic forming to manufacture the aluminum "Airplane Fairing Cover" used on an actual commercial airliner. General superplastic forming usually uses flat sheet to produce symmetrical and less depth-width shape contour, however, the complicated and non-symmetrical work pieces are rarely produced by using superplastic forming. The sheet contour deform is large when flat sheet do the bending process, because fairing cover forming mold have complex shape, high aspect-ratio and the mold V-shape is deeper than middle saddle zone.
Finally, wrinkle phenomenon occur in the forming results, and it is occur inside the cutting line area (Ending Opposite Position, EOP) of the product. In order to get the best forming result (i.e. fairing cover) and solve this problem, several improvement are perform, such as: blow with different P-T curve conditions, different material and material thickness usage (AA5052 and SP5083) and reduce the depth of V-side by modify mold (by add pads to reduce the mold cost).

Reference ( 8 ) 〈TOP〉

[1] F. Yang and W. Yang, "Kinetics and size effect of grain rotations in nanocrystals with rounded triple junctions," Scripta Materialia, vol. 61, pp. 919-922, 11// 2009.
連結：
[2] C. M. Hu, C. M. Lai, P. W. Kao, N. J. Ho, and J. C. Huang, "Quantitative measurements of small scaled grain sliding in ultra-fine grained Al–Zn alloys produced by friction stir processing," Materials Characterization, vol. 61, pp. 1043-1053, 11// 2010.
連結：
[3] K. Higashi, M. Mabuchi, and T. G. Langdon, "High-Strain-Rate Superplasticity in Metallic Materials and the Potential for Ceramic Materials," ISIJ International, vol. 36, pp. 1423-1438, 1996.
連結：
[5] SKY Aluminum Co.LTD, "Superplastic 5083 alloy ALNOVI-1", pp.1-9, 1994.
連結：
[4] 張書省, 超塑性鋁合金5083快速成形研究. 國立中央大學機械工程研究所碩士論文, 2000.

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