In combination with the application characteristics of domestic steel materials in oil well pipes, oil and gas long transportation pipelines, petrochemical equipment and offshore platforms, this paper analyzes the application advantages of a new generation of super steel material in petroleum industry, and describes its application foreground in petroleum engineering construction.

Study of bonding of grain boundaries and fracture mode of steels using electron energy loss spectroscopy;

The development of researches of surface-nanocrysiallization on steels was described in this paper, involving the principles, preparation methods, microstructures and properties.

Application of Artificial Neural Networks in Prediction of Mechanical Properties of Iron and Steel Materials;

Structure refining treatment of iron and steel material is proved to be the optimum way that can improve strength and toughness.

Three methods of surface self-nanocrystallization for iron and steel are ultrasonic shot peening, high energy shot peening and surface mechanical attrition treatment.

Electron energy loss spectroscopy (EELS) was used to study grain boundaries in steels.

More and more efforts have been paid on the research and development of steel products,resulting in expansion of steel category and steel grade.

New Needs of Steel Materials and Development of Producing Technology;

After more than a century's research, development, production and application of steel material, we have accumulated a wealth of resources.

Liquid film solution diffusion wleding is applied to joint of iron and steel materials,and the effects of spray melt temperature that represented by liquid film state on interface microstructure and properties have been studied.