Abstract. In this paper, the forming process research of front opening and closing mechanism hatch for multiple units was carried out, industrial grade 5083 aluminum alloy selected as original material. The uniform rapid superplastic combined with hot stamping direct-reverse used to form body skin, cold argon arc welding were produce connection support, integral part obtained by finally, which ...

Superplastic structural ceramics (Y-TZP, A1203, Si3N4, and their composites) that can withstand biaxial stretching to large strains have been developed recently. Microstructural design of these ceramics first requires an ultrafine grain size that is stable against coarsening during sintering and deformation. A low sintering temperature is a necessary, but not a sufficient, condition for achievi...