superplastic forming diffusion bonding.pptx - superplastic forming diffusion bonding is an industrial process used for creating precise and complex

superplastic forming diffusion bonding.pptx - superplastic...

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superplastic forming diffusion bonding is an industrial process used for creating precise and complex components out of superplastic materials .
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The superplastic behavior of certain metals and alloys was described in Section 2.2.7, where tensile elongations on the order of 2000% were obtained within certain temperature ranges. Common examples of such materials are zinc- aluminum and titanium alloys, which have very fine grains-typically less than 10 to 15 /,tm (see Table 1.1). Superplastic alloys can be formed into complex shapes by superplastic forming
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a process that employs common metalworking techniques-as well as by polymer-processing techniques (such as thermoforming, vacuum forming, and blow molding, to be described in Chapter 19). The behavior of the material in superplastic forming is similar to that of bubble gum or hot glass, which, when blown, expands many times its original diameter before it bursts.
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Superplastic materials n materials science, superplasticity is a state in which solid crystalline material is deformed well beyond its usual breaking point, usually over about 600% during tensile deformation. Such a state is usually achieved at high homologous temperature.
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