The Behaviour of the 2090 Alloy at Plastic Deformation Through Dynamics Cold Upsetting

<div class="htmlview paragraph">The experimental researches made to settle the behaviour at deformation of Al-Li alloys of 2090 type was realized on anneal samples through dynamics cold upsetting.</div> <div class="htmlview paragraph">The aim of this paper is to have in view the variation of degree of deformation with structure and properties of materials in different state of metallurgical processing. It was settled the maximum possible degree of cold deformation of Al-Li alloys of 2090 type until don't appear cracks.</div> <div class="htmlview paragraph">The behaviour of the 2090 alloy at plastic deformation through dynamics cold upsetting was studied through:</div> <div class="htmlview paragraph"> <ul class="list disc"> <li class="list-item"><div class="htmlview paragraph">the variation of specific mechanical work k [daN/mm²] with the degree of deformation ε [%];</div></li> <li class="list-item"><div class="htmlview paragraph">the variation of deformation resistance p [daN/mm²] with the degree of deformation ε [%];</div></li> <li class="list-item"><div class="htmlview paragraph">the variation of hardness [HRB] with the degree of deformation ε [%].</div></li> </ul> </div> <div class="htmlview paragraph">By examination of the dependence between specific mechanical work and the degree of deformation, deformation resistance work and the degree of deformation, respectively hardness and the degree of deformation, it was settled the equations which describe the behaviour of the tested alloy to cold plastic deformation through dynamics upsetting.</div>