[PDF] Accelerated Cavitation Damage Of Steels In Liquid Metal Environments eBook

Author : J. R. Johnston
Publisher :
Page : 34 pages
File Size : 21,79 MB
Release : 1967
Category : Cavitation
ISBN :

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An investigation was conducted to study cavitation damage in liquid-metal environments of materials under consideration for components of liquid-metal power conversion systems. The materials investigated included AISI Types 316 and 318 stainless steels, Sicromo 9M, Inconel 600, A-286, Hastelloy X, L-605, René 41, and Stellite 6B. A magnetostrictive apparatus was used to perform accelerated cavitation damage tests with liquid sodium at 800 F and mercury at 300 F. Cavitation damage determined by volume loss and surface roughness measurements was used to rank the various materials and to compare the effects of the different fluids on the degree of damage sustained. Metallographic studies were made to determine the nature of the early stages of cavitation damage. The materials tested in both sodium and mercury ranked in the same order of resistance to cavitation damage, but the degree of damage to all materials was consistently greater when tested in mercury. The most resistant material was Stellite 6B; the least resistant material was annealed Sicromo 9M. Surface roughness measurements provided the same ranking of materials as that provided by conventional volume loss measurements. Visual observation of sodium pump impeller blades of three materials operated under cavitating conditions for 250 hr indicated the same ranking of the materials with respect to resistance to cavitation damage that was determined from the accelerated cavitation tests.

Author : Wojciech Borek
Publisher : BoD – Books on Demand
Page : 162 pages
File Size : 28,49 MB
Release : 2018-11-28
Category : Science
ISBN : 1789846528

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Cavitation erosion is one of the most popular phenomena of the destruction of engineering materials working in water conditions and various kinds of liquids. The cavitation effect is defined as a physical effect, induced by a variable field of liquid pressures, where bubbles or other voids (caverns) - containing steams of a given liquid, gas, or a steam-gas mixture - are formed, expanded, and disappear. A better understanding of all aspects related to cavitation wear will allow for more thoughtful analysis in the selection of innovative engineering materials additionally protected by various technologies or techniques in the field of surface engineering, and optimization of the design of constructional elements used in the cavitation environment. The novelty of this book is the presentation of extensive knowledge related to cavitation, erosion, and how to protect engineering materials against this phenomenon supported by the results of thorough research by the authors.

Author : SG. Young
Publisher :
Page : 36 pages
File Size : 35,91 MB
Release : 1970
Category : Cavitation
ISBN :

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Three materials with widely different mechanical properties, L-605, Stellite 6B, and AISI 316 stainless steel were subjected to accelerated cavitation damage in sodium at 800 F (427 C). L-605 was tested also at 400 F (204 C) and 1200 F (649 C). A magnetostrictive vibratory apparatus was used. Argon was introduced over the liquid sodium to maintain pressures ranging from 1 to 4 atm (1 to 4 x 105 N/m2). Cavitation damage was determined by volume loss measurements, and metallographic studies were made.