Analysis of forming limit diagram for superplastic materials
Superplastic materials show very large tensile elongation (in excess of 5000%) even if they are lowly stressed. Superplastic forming is carried out at high temperatures and relatively low strain rates. In order to control the industrial forming processes, the difficulty in predicting the failure str...
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| Veröffentlicht in: | International journal of advanced manufacturing technology 2006-11, Vol.31 (3-4), p.244-246 |
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| container_title | International journal of advanced manufacturing technology |
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| creator | Giuliano, Gillo |
| description | Superplastic materials show very large tensile elongation (in excess of 5000%) even if they are lowly stressed. Superplastic forming is carried out at high temperatures and relatively low strain rates. In order to control the industrial forming processes, the difficulty in predicting the failure strain of superplastic materials is main problem faced by technologists. In this paper, limit strain for superplastic materials were investigated under biaxial tension using the finite element method (FEM). To validate the results biaxial tension tests have been conducted using a fine-grained Pb-Sn alloy that shows superplastic properties at room temperature. The superplastic sheet was deformed using an experimental apparatus with dies of aspect ratios of 1:1, 15:11, 5:3 and 5:2. |
| doi_str_mv | 10.1007/s00170-005-0207-6 |
| format | Article |
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Superplastic forming is carried out at high temperatures and relatively low strain rates. In order to control the industrial forming processes, the difficulty in predicting the failure strain of superplastic materials is main problem faced by technologists. In this paper, limit strain for superplastic materials were investigated under biaxial tension using the finite element method (FEM). To validate the results biaxial tension tests have been conducted using a fine-grained Pb-Sn alloy that shows superplastic properties at room temperature. The superplastic sheet was deformed using an experimental apparatus with dies of aspect ratios of 1:1, 15:11, 5:3 and 5:2.</description><identifier>ISSN: 0268-3768</identifier><identifier>EISSN: 1433-3015</identifier><identifier>DOI: 10.1007/s00170-005-0207-6</identifier><language>eng</language><publisher>Heidelberg: Springer Nature B.V</publisher><subject>Aspect ratio ; Axial stress ; Deformation ; Elongation ; Finite element method ; Forming limit diagrams ; Heat treating ; Lead ; Limit strain ; Predictive control ; Superplastic forming ; Superplasticity ; Technologists ; Tension tests ; Tin ; Tin base alloys</subject><ispartof>International journal of advanced manufacturing technology, 2006-11, Vol.31 (3-4), p.244-246</ispartof><rights>The International Journal of Advanced Manufacturing Technology is a copyright of Springer, (2005). 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| identifier | ISSN: 0268-3768 |
| ispartof | International journal of advanced manufacturing technology, 2006-11, Vol.31 (3-4), p.244-246 |
| issn | 0268-3768 1433-3015 |
| language | eng |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Aspect ratio Axial stress Deformation Elongation Finite element method Forming limit diagrams Heat treating Lead Limit strain Predictive control Superplastic forming Superplasticity Technologists Tension tests Tin Tin base alloys |
| title | Analysis of forming limit diagram for superplastic materials |
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