Dispersoids effects

Ternary Alloys. Almost ah commercial ahoys are of ternary or higher complexity. Ahoy type is defined by the nature of the principal ahoying additions, and phase reactions in several classes of ahoys can be described by reference to ternary phase diagrams. Minor ahoying additions may have a powerflil influence on properties of the product because of the influence on the morphology and distribution of constituents, dispersoids, and precipitates. Phase diagrams, which represent equhibrium, may not be indicative of these effects. 

Chromium compounds Cr203 surface scale Nickel- chromium—iron alloys Nickel-chromium— molybdenum (tungsten) alloys Ni-Cr alloys analytical methods, 6 502-514 composition of metal compared to chromium ferroalloys, 6 501t dispersoid former, 2 325, 327 disposal, 6 519-521 economic aspects, 6 496—500 effect on cobalt alloys, 7 220 effect on stainless steel corrosion resistance, 7 809... 

The effect of dispersoids on the mechanical properties of metals has already been described in Section 5.1.2.2. In effect, these materials are composites, since the dispersoids are a second phase relative to the primary, metallic matrix. There are, however, many other types of composite materials, as outlined in Section 1.4, including laminates, random-fiber composites, and oriented fiber composites. Since the chemical nature of the matrix and reinforcement phases, as well as the way in which the two are brought together (e.g., random versus oriented), vary tremendously, we shall deal with specific types of composites separately. We will not attempt to deal with all possible matrix-reinforcement combinations, but rather focus on the most common and industrially important composites from a mechanical design point of view. 

Whiskers provide a better reinforcement than particles from the point of view of the effect of dispersoid shape on toughness based on theoretical predictions (Shalek et al., 1986). The most commonly used whisker... 

A. Kawai, K. Uchida, F. Ikazaki, Effects of shape and size of dispersoid on electrorheology. In Proceedings of 8th International Conference, Electrorheological Fluids and Magnetorheological Suspensions. Edited by G. Bossis Singapore, World Scientific 2002, 626-632. 

Two types of solids dispersoids causing problems in diverse processes have been recognized dust consisting on particles larger than 1 pm, and fume formed by particles smaller than 1 pm. Fumes are also defined as particles that, once settled, do not normally return to an airstream, while dusts can be considered particles that even after settling may become airborne again as an effect of an air draff or blast. 

Sut86] Sutuff, JA and Rowe, R.G., Rare Earth Oxide Dispersoid Stability and Microstructural Effects in Rapidly Solidified TisAl and TiaAl-Nb, in Rapidly Solidified Alloys and Their Mechanical and Magnetic Properties, B.C. Giessen, D.E. Polk, and A.I. Tbub, Ed.,... 

Effect of the form of corpuscles of a dispersoid on efficiency of clearing of gas emissions is poorly studied. This point in question has basic value for separation of nonuniform systems with not isometric or astable-dispersoid. 

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