Please use this identifier to cite or link to this item:
|Type:||Artigo de evento|
|Title:||Superplastic Deformation Of A Duplex Stainless Steel|
|Abstract:||Superplastic behavior of a duplex stainless steel has been studied at 1223 K (950°C) and 1253 K (980°C) for initial strain-rates ranging from 2×10-4 s-1 to 8×10-3 s-1. In the given range of temperature, it was observed that the elongation increased as the strain rate decreased. The best superplastic conditions were obtained at 1253 K where the samples presented homogeneous deformation along the gage length. Under this temperature the maximum elongation (900%) was obtained for an initial strain-rate of 4×10-4 s-1. Those results were also confirmed by determination of the strain-rate sensitivity coefficient, m, which presented the highest value at 1253 K and clearly increased with decreasing strain-rate. Microstructure studies and previous information about the amount of cavities suggest that the deformation process occurs by a superplastic grain boundary sliding mechanism.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.