Formability
Formability is the property of a material to be permanently formed through external stress .
Workpieces are permanently changed in their shape through rolling , forging , driving and other forming processes . One speaks here of plastic deformation . The suitability of a material for this process is called its formability. Materials that are easily deformable are therefore easily plastically deformable.
The formability is u. a. defined by the position of two limits:
- The yield point : A tensile test shows that there is a lower limit for plastic deformation: below this limit, the material can only be deformed elastically, i.e. it will return to its original shape after the tensile forces have ceased.
- The breaking limit : the material cannot be plastically deformed indefinitely: if the breaking limit is exceeded, the material breaks.
See also
- Machinability - suitability of materials for machining
- Castability - suitability of materials for casting
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Weldability - suitability of workpieces for welding
- Weldability - suitability of materials for welding
literature
- Serope Kalpakjian, Steven R. Schmid, Ewald Werner: Material technology. 5th edition, Pearson Education GmbH, Munich 2011, ISBN 978-3-86894-006-0 .
Web links
- Manufacture and evaluation of the formability of friction stir welded tailored blanks made of aluminum alloys (accessed April 1, 2016)
- Formability of laser induction welded structures made of high-strength sheet steel (accessed April 1, 2016)
- Forming basics (accessed April 1, 2016)