The influence of rare earth cerium atom on the amount,morphology and distribution of the grain boundary phase of Fe-Cr-Ni-Nb-Ti-Al-W alloy was investigated,and the relationship between the above characteristics and the stress rupture lifes of the test alloys was discussed.

365, the high temperature ductility and stress rupture life were reduced because large MC films, dendritic flake M6C and fine M23C6 films precipitated at grain boundaries.

The stress rupture life is found to be remarkably improved with Re addition but the strengthening effect .

The endurance life and fracture behaviors of directionally solidified superalloy DZ4 after pre-deformation and heat treatment were tested and analyzed.

We select material from representational part of turbine blade in order to increase the reliability of design parameters and design method for endurance life of turbine blade,.

Durability design and service life prediction for the concrete structure;

One-parameter fatigue life prediction method at different stress ratios;

A study of the methods of controlling tool wear life prediction in FMS;

Development of corrosion life prediction system for petrochemical equipment materials;