TY - GEN
T1 - Finite element modeling of superplastic forming in the presence of back pressure
AU - Nazzal, M.
AU - Khraisheh, M.
PY - 2007
Y1 - 2007
N2 - It is established that some superplastic materials undergo significant cavitation during deformation. Cavitation not only limits the superplastic ductility of the material, but also reduces the service properties and the fatigue performance of the formed parts. Experimental results have shown that an effective method to eliminate cavitation is the application of hydrostatic pressure during deformation. In this work, finite element simulations are carried out to study the effects of hydrostatic pressure on damage evolution during SPF. The analysis is conducted for the superplastic copper based alloy Coronze-638 at 550°C The results clearly demonstrate the effectiveness of the superimposition of hydrostatic pressure in reducing the amount of cavities generated during SPF and improving the integrity of the formed part.
AB - It is established that some superplastic materials undergo significant cavitation during deformation. Cavitation not only limits the superplastic ductility of the material, but also reduces the service properties and the fatigue performance of the formed parts. Experimental results have shown that an effective method to eliminate cavitation is the application of hydrostatic pressure during deformation. In this work, finite element simulations are carried out to study the effects of hydrostatic pressure on damage evolution during SPF. The analysis is conducted for the superplastic copper based alloy Coronze-638 at 550°C The results clearly demonstrate the effectiveness of the superimposition of hydrostatic pressure in reducing the amount of cavities generated during SPF and improving the integrity of the formed part.
KW - Cavitation
KW - Finite element modeling
KW - Hydrostatic pressure
KW - Superplastic forming
UR - http://www.scopus.com/inward/record.url?scp=38449091818&partnerID=8YFLogxK
U2 - 10.4028/0-87849-435-9.257
DO - 10.4028/0-87849-435-9.257
M3 - Conference contribution
AN - SCOPUS:38449091818
SN - 0878494359
SN - 9780878494354
T3 - Materials Science Forum
SP - 257
EP - 262
BT - Superplasticity in Advanced Materials - ICSAM 2006 - Proceedings of the 9th International Conference on Superplasticity in Advanced Materials
PB - Trans Tech Publications Ltd
T2 - 9th International Conference on Superplasticity in Advanced Materials, ICSAM 2006
Y2 - 23 June 2006 through 26 June 2006
ER -