When the content of Ti in Al alloys is over 0.04%, the coarse columnar grain in pure Al is refined to equi-axed grain, and the grain size was decreased with the enhancement of titanium content.
Therefore, study the rule of ameliorating solidification structure with EMS to abtain more refined and homogeneous solidification structure, which is of great benefit to the improvement of the mechanical performance of new generation steel materials.
This paper, based on the actual situation of Dalian metallurgy industry, focuses on analyzing the foreground of main products in market. In view of the overall strategy of Dalian, this paper specifically proposes that the basic orientation of Dalian metallurgy industry is to develop refined steels, of which the representing products are excellent special steels and further processed steels.
The production process and technical parameters of making high quality refined nickel sulphate for cell industry & electroplate industry by using rough nickel sulphate as raw materials are described.
Certain hypotheses concerning optimal control are refined and the relationship between the Pontryagin maximum principle and Bellman's dynamic programming method in the context of these hypotheses is discussed.
Malyugin on linearization of arithmetical models of logical functions are interpreted and refined from the viewpoint of modern techniques of logical design of integral circuits and nearest neighbor technologies.