In order to research on correlative functions of peak stress and deformation stored energy with Zener-Hollomon parameter,the elevated temperature tensile test of 45 steel was carried out at Gleeble-1500D thermal-mechanical simulator,in the range of deformation temperature 1123-1273K and initial strain rate 0.

The model of thermal deformation and the relationship of peak stress,peak strain and Z were obtained that provide basic data for prediction and control of microstructure and properties of tested steel products.

The activation energy of deformation was calculated and the relationship among peak stress and deformation temperature and strain rate was established.

One method to decrease the peak stress at the joint of nozzle and thick cylinder was introduced in this article.

The accurate formulas for calculating the in-plane elastic moduli elastic moduli in consideration of the shear and extension deformation of cell edges and the theoretical expressions of plateau stress, densification strain and densification strain energy per unit volume of the aluminum double-walled honeycomb cores are derived.

The results showed that with fixed structural parameters,plateau stress of square metal aluminum honeycomb is proportional to the square of velocity;and with fixed velocity,plateau stress is the power law index of the ratio of thickness and edge length.