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In the operation of the power equipment of steam power plants the steam pipe bends can be damaged at a temperature exceeding 500°C. The presence of creep pores (especially pore chains) in the metal of a bend operating for a long time indicates that the service life of the bend has been...
The quality of the metal of rotor turbines and generators is one of the main factors determining their reliability and service life. It is important not only to choose correctly the grade of the steel but also the process of its production. The results of a study of two kinds of defect observed...
The methods of scanning electron microscopy, local electron probe analysis, and x-ray diffraction analysis are used for studying the morphology and local composition of grains in melt-textured long specimens of superconductors based of barium-yttrium cuprate and fabricated by the method of zone...
The strength and the operational properties of low-alloy thick-sheet steels is increased by heat treatment in the line of the mill with the use of the rolling or furnace heat. The present work concerns the special features of structure formation and the mechanical properties of rolled stock from...
It is important to devote maximum attention to the heat treatment of temperable high-strength weldable steels (σ 0.2 ≥700 MPa) in which the expensive alloying elements (Cr, Ni, Mo, etc.) are partially or fully replaced by microadditives (V, Ti, etc.). The present paper concerns the effect of...
The technological possbilities of directed crystalization are broad and make it possible to manufacture castings from high-temperature alloys with various sets of properties. The present work is devoted to the possibilities of intensifying directed crystallization of the Ni 3 Al intermetallic...
In many cases the plastic properties and brittle fracture strength of industrial semiproducts from high-strength steels are caused by their structural inhomogeneity. The structural inhomogeneity of such steels can be diminished and the plastic characteristics improved by conducting a preliminary...
The interest in cast tools has grown for several reasons. In particular, the casting process provides effective utilization of various kinds of waste high-speed steels. However, successful operation of cast tools is possible only if we solve the problem of the elevated brittleness of cast metal....
The results of a study of the structure of submicrocrystalline metals conducted with the help of transmission electron microscopy, Mössbauer spectroscopy, and calorimetric measurements are presented. The effect of the special features of the microstructure on the amplitude and temperature...
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