V. V. Bukhanovskii

High-temperature strength of refractory metals, alloys and composite materials based on them. Part 1. tungsten, its alloys, and composites

The results of investigations of the mechanical characteristics of tungsten, alloys and composite materials based on it, which are used in space-rocket hardware, have been generalized. The investigations were carried out under short-time, sustained static and low-cycle loading conditions on small time bases in a temperature range of 290–3020 K.

High-temperature strength of refractory metals, alloys and composite materials based on them. Part 2. Molybdenum and niobium alloys

The results of investigations of the mechanical characteristics of molybdenum and niobium alloys and their welded joints, which are used in space-rocket hardware, have been generalized. The investigations were carried out under short-time, sustained static and low-cycle loading conditions on small time bases in a temperature range of 290–2270 K.

Effect of heat treatment and welding on the fatigue resistance of molybdenum alloys of the Mo−Zr−B and Mo−Al−B systems

Low-alloy molybdenum alloys are widely used in high-duty welded structural parts and power units that operate under conditions of extremely high temperatures and loads in aggressive gas media. In some cases, in particular in storing and transporting the parts, they are subjected to cyclic and vibration loads, which may cause their fatigue and premature failure. The present paper gives the results of a study of the fatigue resistance of thin rolled sheets and welded joints of molybdenum alloys TsM-6 and TsM-10 with allowance for the structural state of the material and the factors of the manufacturing process, particularly the heat treatment regime.

Effect of Silicide Ceramic Coatings on the High-Temperature Strength and Ductility of Niobium Alloy of the Nb – W – Mo – Zr System

The characteristics of short-term strength and ductility of niobium alloy 5VMTs of the Nb – W – Mo – Zr system and a composite from alloy 5VMTs with a silicide ceramic coating are studied in vacuum, in an inert medium, and in air within a temperature range of 290 – 2070 K. The kinetics of the nucleation and evolution of damage in the protective coating and in the matrix is investigated. The values of ultimate plastic strain at which the composite preserves the bearing capacity in high-temperature aggressive and oxidizing gas media are determined.

Effect of heat treatment and welding on mechanical properties of low-alloy molybdenum alloys in a wide temperature range

The short-term strength and ductility of rolled thin sheets from low-alloy molybdenum alloys TsM-10, TsM-6, TsM-12, and MI-5 in deformed, polygonized, recrystallized, and cast states is studied in the temperature range 20–2000°C. It is shown that the high-temperature strength of these alloys can be increased by a factor of 1.1–1.6 by annealing at 1150–1500°C for 1 h. Welded joints of molybdenum alloys are shown to have a lower strength than the base metal at 20–1500°C but commonly have a comparable strength in the high-temperature region.