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Method of superplastic forming tridimensional article obtained by superplastic deformation.
Method of superplastic forming tridimensional article obtained by superplastic deformation.
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机译：通过超塑性变形获得三维制品的超塑性成形方法。
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摘要
A method of superplastically forming at least two sheets conformable material superplastically to form a three dimensional article, being the sheets joined together along diffusion bonds to form discrete cells and wherein a gas path is provided through the joints between cells, the method comprising heating the sheets to a temperature at which exhibit superplastic properties and injecting a gas between the sheets to expand the cells, allowing the gas path which the injected gas to pass from cell to cell to expand cells as it does, characterized in that the method includes locally heating the edges of each gas path through a diffusion bond to cause the metal changes its microstructure in said edges, thereby increasing the resistance to flow metal at the edges under superplastic forming conditions comp delas plow with other sheets.
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