The behavior of the 2090 alloy at plastic deformation through dynamics cold upsetting

摘要

The experimental researches made to settle the behavior at deformation of Al-Li alloys of 2090 type was realized on anneal samples through dynamics cold upsetting. 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 cracks don't appear. The behavior of the 2090 alloy at plastic deformation through dynamics cold upsetting was studied through: · the variation of specific mechanical work k [daN/mm{sup}2] with the degree of deformation ε[%]; · the variation of deformation resistance p [daN/mm{sup}2] with the degree of deformationε[%]; · the variation of hardness [HRB] with the degree of deformationε[%]. 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 behavior of the tested alloy to cold plastic deformation through dynamics upsetting.