Friction Stir Processing for Enhanced Low Temperature by Christopher B. Smith and Rajiv S. Mishra (Auth.)

By Christopher B. Smith and Rajiv S. Mishra (Auth.)

The use of friction stir processing to in the community adjust the microstructure to stronger formability has the capability to change the producing of structural shapes. there's adequate examine to place jointly a quick monograph detailing the basics and key findings. One instance of traditional production method for aluminum alloys contains fusion welding of 5XXX sequence alloys. this is often changed through friction stir welding, friction stir processing and forming. an enormous benefit of this swap is the improved homes. even though qualification of any new technique includes a sequence of exams to end up that fabric homes of curiosity within the friction stir welded or processed areas meet or exceed these of the fusion welded zone (conventional approach). This ebook will offer a case learn of Al5083 alloy with a few extra examples of excessive energy aluminum alloys.

  • Demonstrates how friction stir processing enabled forming can extend the layout house by utilizing thick sheet/plate for functions the place items are joined as a result of loss of formability
  • Opens up new procedure for production of structural shapes
  • Shows how the method has the capability to decrease the price of a accomplished constitution and increase the layout allowables

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Additional info for Friction Stir Processing for Enhanced Low Temperature Formability. A volume in the Friction Stir Welding and Processing Book Series

Sample text

During the process qualification phase, the relative sensitivity or difficulty of the GMAW process versus friction stir processing were readily evident. For example, for GMAW, the precleaning operation was critical and required extra care to ensure that hydrocarbons and other contaminants were completely removed. The plates that were welded were required to be ground, then wiped carefully with alcohol. Otherwise, porosity would develop within the weld, reducing its relative quality and its strength.

Due to the increase in difficulty for the vertical up weld, the qualification testing as noted above was repeated to ensure the process could be used and replicated for the vertical up portion of the weld. During the process qualification phase, the relative sensitivity or difficulty of the GMAW process versus friction stir processing were readily evident. For example, for GMAW, the precleaning operation was critical and required extra care to ensure that hydrocarbons and other contaminants were completely removed.

It consists of equipment that would be on typical tensile testing machines, but on a smaller scale. There is a stepper motor coupled to a crosshead whose resulting linear motion is used to pull the sample in tension. Connected to the crosshead are cooling collars (the setup can be used for high temperature testing) and subsequently one set of grips. On the stationary side, there is a second cooling collar and second set of grips, which are mounted to a load cell. The load cell is connected to a data acquisition system which records load versus strain, as is typical of standard tensile testing machines.

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