Superplasticity refers to the ability of some materials pull out tensile elongations 400% or more when strain rate sensitivity is ~0.5. The first report true superplastic flow was published in 1934 experiments conducted England. However, this remarkable result attracted little interest among western scientific researchers and remained a laboratory curiosity for many years. Later, following exte...

Abstract. The difficult formability of Ti2AlNb alloy leads to the difficulty traditional manufacturing methods form complex thin-walled components, limiting wide application in aerospace. In this paper superplastic forming process Ti2AINb with structure was studied. tensile tests were carried out at varying temperature ranging from 920℃ 980℃ and strain rate 0.001s-1 0.03s-1. effect deformation-...

Abstract. Applied at elevated temperature compared with in situ-whisker reinforced titanium matrix composite(TMC) higher than alloy 50~150℃. The advantage of TMC Ti-Al intermetallic compound is lower cost, better weldable property, simple fabrication process; density super alloy. One important demand sheet for high application used speed craft lighter part fabricated by SPF/DB technology. This ...

The superplastic behavior of fine-grained metals is well described by the deformation model in which grain boundary sliding (GBS) is accommodated by slip. This slip accommodation process involves the sequential steps of glide and climb, with climb assumed to be the ratecontrolling process. The climb distance during GBS is often considered to be on the order of grain size in the conventional the...