Modifying effect of tungsten on vacuum condensates of iron

Abstract

Laws of the structure formation, as well as the strength properties and thermal stability of vacuum condensates of the Fe-W system have been studied. It has been found that the alloying of iron foils with tungsten to 1 at % makes it possible to disperse the grained structure of the condensates to nanometric dimensionality and to markedly enhance their strength properties and recrystallization temperature. Thus, the foils contain ing ~0.8% tungsten and grains of about 50 nm in size exhibit the hardness 5.5 GPa and recrystallization tem perature 800°C. These results can be used to devise compositions of the steels designed for subsequently obtaining high strength and thermostable nanostructural states.

Условия Достижения Сверхтвердого Состояния При Критической Наноразмерной Толщине Слоев В Многопериодных Вакуумно-Дуговых Нитридных Покрытиях

“…Однако вопросы, связанные с процессами и механизмами достижения высоких физико-механических характеристик в такого типа покрытиях и возможностью управлять этими хаарктеристиками, еще требуют детального анализа и объяснений. Особенно это важно в случае сильно неравновесных условий получения, когда могут формироваться различного рода пересыщенные твердые растворы [3], образовываться метастабильные фазы [4], протекать радиационно-стимулированные и самоорганизующиеся процессы и др.…”

The influence of the conditions of microplasma processing (microarc oxidation in anode­cathode regime) of aluminum alloys on their phase composition

“…Among them, there are various options for thermal processing [3], chemical-thermal treatment [4], electrochemical technology [1], coatings with electron beam [5], magnetron [6], vacuum arc [7] and other methods. These types of effect produced on materials have technological and instrumental differences, but at the same time they have much in common, which is determined by the final structural state of the material.…”

Structural Engineering of the Multilayer Vacuum Arc Nitride Coatings Based on Ti, Cr, Mo and Zr

“…In the area of production of coatings -structural engineer determines the possibility of the directional selection of physical and technological conditions of deposition and the subsequent impact on the condensate to produce the desired structure of the design that determines the achievement of the required performance properties [2 -4]. A result of using of the structural engineering can be obtained, as a new phase states [5] as well as the most effective structure [6] and the stress-strain states [7].…”