ANALYSIS OF A HOT ROLLING SCHEDULE FOR COMMERCIAL ALUMINUM-1 MAGNESIUM ALLOY IN TERMS OF DYNAMIC MATERIAL MODELING CONCEPTS. PART II: DETERMINATION OF THE POWER DISSIPATION EFFICIENCY

摘要

A typical industrial hot rolling operation applied to a commercial aluminium-1 % magnesium alloy has been analyzed in terms of some concepts of dynamic materials modeling, particularly the so called power dissipation co-content and the efficiency of power dissipation through microstructural changes (η). The calculation of η for every deformation condition of the hot rolling schedule has been conducted assuming that such a parameter depends not only on mean deformation temperature and strain rate but also on the strain applied. All the analysis is conducted on the basis of the constitutive equation previously determined for this material.