Abstract:
Some alloys with fine grain size can present, under certain conditions, a very high ductility and large deformations before rupturing occurs – a condition known as superplasticity. Superplastic forming is a technique that takes advantage of this material’s behavior and consists of heating a metallic blank up to a suitable temperature and blow forming it under gas pressure into a die. There is a growing interest in this manufacturing process in many different areas, such as aeronautical, automotive and medical, due to the possibility of manufacturing complex, lightweight geometries and strong thin shell parts. In this study, analytical approach is used to predict the optimum gas pressure for forming the blank, in order to maintain a controlled strain rate, ensuring superplastic behavior. Two domes are manufactured using aluminum and titanium to test the pressure curves and to understand the phenomena related to superplastic forming.
Reference:
PEREIRA, Daniel Almeida; BATALHA, Mario H.F. CARUNCHIO, André F.; RESENDE, Hugo Borelli. An analysis of superplastic forming to manufacture aluminum and titanium alloy components. Revista IPT, Tecnologia e Inovação, v.1, n.3, p. 63-73, dez., 2016.
Access to the article on the Journal website:
http://revista.ipt.br/index.php/revistaIPT/article/view/32/17
Some alloys with fine grain size can present, under certain conditions, a very high ductility and large deformations before rupturing occurs – a condition known as superplasticity. Superplastic forming is a technique that takes advantage of this material’s behavior and consists of heating a metallic blank up to a suitable temperature and blow forming it under gas pressure into a die. There is a growing interest in this manufacturing process in many different areas, such as aeronautical, automotive and medical, due to the possibility of manufacturing complex, lightweight geometries and strong thin shell parts. In this study, analytical approach is used to predict the optimum gas pressure for forming the blank, in order to maintain a controlled strain rate, ensuring superplastic behavior. Two domes are manufactured using aluminum and titanium to test the pressure curves and to understand the phenomena related to superplastic forming.
Reference:
PEREIRA, Daniel Almeida; BATALHA, Mario H.F. CARUNCHIO, André F.; RESENDE, Hugo Borelli. An analysis of superplastic forming to manufacture aluminum and titanium alloy components. Revista IPT, Tecnologia e Inovação, v.1, n.3, p. 63-73, dez., 2016.
Access to the article on the Journal website:
http://revista.ipt.br/index.php/revistaIPT/article/view/32/17
