[PDF] The Solid Particle Erosion Behavior Of Steel As A Function Of Microstructure eBook

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Publisher :
Page : 19 pages
File Size : 25,50 MB
Release : 1981
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ISBN :

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In this paper, the effects of the microstructure of two ductile steels on their behavior under solid particle erosion were determined. The steels chosen allowed microstructural changes to be made without drastically changing their hardness, which is reported to be a direct function of erosion resistance. The steels used were plain carbon 1075 steel in coarse pearlite, fine pearlite and spheroidized forms and plain carbon 1020 steel in three spheroidized conditions. Single-particle and multiple-particle erosion tests were conducted using SiC particles 240?m in diameter, angles of impingement of 15°, 30° and 90° and velocities of 30.5 m s-1 (100 ft s-1) and 61 m s-1 (200 ft s-1). Both surface and subsurface analyses were conducted using scanning electron microscopy. In the room temperature erosion tests the spheroidized microstructure of the 1075 steel eroded less than did either of the two pearlitic microstructures. It was found that the pearlitic steels exhibited cracking at the eroded surface as well as beneath it and that this caused greater material removal. The spheroidized structure showed no surface cracking; however, cracking did occur at a depth of approximately 20?m below the surface. The carbide particle spacing in the 1020 spheroidized steel also had a measurable effect on the erosion rate. Finally, the hardness of the various microstructures had an inverse relation to the erosion rate.

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Publisher :
Page : 50 pages
File Size : 25,65 MB
Release : 1980
Category :
ISBN :

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The effects of the microstructure of two ductile steels on their solid particle erosion were determined. The steels chosen allowed microstructural changes to be made without drastically changing their hardness, which is reported to be a direct function of erosion resistance. The steels used were plain carbon 1075 and 1020 in the coarse pearlite, fine pearlite, and spheroidized forms for the 1075 and in three spherodized conditions for the 1020 steel. Single particle and multiple particle erosion tests were conducted using 240 {micro}m diameter SiC particles, angles of impingement of 15°, 30°, and 90° and velocities of 30.5 mps (100fps) and 61 mps (200fps). Both surface and subsurface analyses were conducted using scanning electron microscopy. In the room temperature erosion tests, the spheroidized microstructure of the 1075 steel eroded less than either of the two pearlitic microstructures. It was found that the pearlitic steels exhibited cracking at the eroded surface as well as beneath it, causing greater material removal. The spheroidized structure showed no surface cracking; however, cracking did occur at a depth of approximately 20 {micro}m below the surface. The carbide particle spacing in the 1020 spheroidized steel also had a measureable effect on the erosion rate, The hardness of the various microstructures had an inverse relation to the erosion rate,

Author : Alan V. Levy
Publisher : ASM International
Page : 240 pages
File Size : 27,94 MB
Release : 1995-01-01
Category : Technology & Engineering
ISBN : 9781615031894

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Contents include: Mechanism of Erosion - Effects of Mechanical Properties of Metals on Erosion - Effects of Erodent Particle Characteristics on the Erosion of Steel - Erosion and Erosion Corrosion of Steels at Elevated Temperatures - Erosion Corrosion of Materials in Elevated - Temperature Service and more.

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Page : pages
File Size : 43,60 MB
Release : 1978
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The effect of microstructure of two phase alloys, consisting of a softer, ductile matrix and a harder interspersed phase, on erosion behavior was determined. The stress and strain distribution in a two phase alloy where the second, hard phase is a distribution of particles in a more ductile matrix was calculated. It was determined that a spheroidized 1075 carbon steel eroded 30 percent less than a pearlitic microstructure of the same steel even though the spherodized form was 21 R/sub B/ points of hardness lower than that of the pearlitic steel. The computerized calculation of stresses and strains from the impact of eroding particles on a two phase alloy surface were used to define the ability of the particle impact to induce voids and cracks in the target material that could cause material loss. The resultant predicted voids and cracks were related to experimentally determined behavior of spherodized steel.

Author : B.D. Sartwell
Publisher : Elsevier
Page : 1129 pages
File Size : 18,13 MB
Release : 2012-12-02
Category : Technology & Engineering
ISBN : 0444601104

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Metallurgical Coatings and Thin Films 1990 presents the Proceedings of the 17th International Conference on Metallurgical Coatings and 8th International Conference on Thin Films, held in San Diego, California on April 2-6, 1990. It contains 219 papers covering a wide range of topics related to metallurgical coatings and thin films, including high temperature coatings, hard coatings, diamond films, tribology, and ion beam modification. Organized into 99 chapters, this volume begins with a discussion of a thermochemical model for diamond growth from the vapor phase and an experiment in large area diamond coating using a combustion flame torch in its traversing mode. It then explores the properties of diamond films, preparation of diamond-like carbon films using various ion-beam-assisted techniques, deposition of diamond-like films by laser ablation, and coating of cubic BN films on different substrates. The book examines surface processes and rate-determining steps in plasma-induced chemical vapor deposition, and addition of rare earths to improve scale adherence on heat-resisting alloys and coatings. The reader is introduced to high temperature wear and clearance control coatings, thermal barrier coatings, and corrosion resistant coatings. The book also discusses modification of coatings/surfaces to reduce friction; the mechanics of the tribology of thin films systems; mechanochemical interactions in the tribological behavior of materials; analysis and micromechanical testing of tribological coatings; surface modification using directed ion beams; and industrial equipment and processes. This book is a valuable resource for students and researchers interested in metallurgical coatings and thin films.

Author : & The Minerals, Metals Materials Society
Publisher : Springer
Page : 1731 pages
File Size : 42,78 MB
Release : 2019-02-26
Category : Technology & Engineering
ISBN : 3030058611

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This collection features papers presented at the 148th Annual Meeting & Exhibition of The Minerals, Metals & Materials Society.

Author : R. Viswanadham
Publisher : Springer Science & Business Media
Page : 990 pages
File Size : 50,78 MB
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 1468443194

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This volume contains the proceedings of the first International Conference on the Science of Hard Materials held in Moran, Wyoming, Aug. 23-28, 1981. The objective of the conference was to review and advance the state of knowledge of the basic physical and chemical properties of hard materials and show how these properties influence performance in a variety of applications. To this end, the 49 con tributed papers and the four keynote papers by Prof. Fischmeister and Drs. Hintermann, Exner and Almond, present an excellent overview of the state of the art in the "science" of hard materials. The contents of these proceedings also reflect the fact that hard metal technology is now well matured and several aspects of the behavior of these materials are well understood and firmly established. Structure-property relationships in this class of materials are currently well known. Pitfalls in some of the traditional test methods have been recognized and new test methods are being developed which discriminate between intrinsic material properties and flaw content and distribution. Application of fracture mechanics, al though a late corner to the hard materials area (as compared to other structural materials), is rapidly gaining acceptance and new fracture toughness test methods are being developed. Application of modern analysis and analytical techniques to these materials has begun and entirely new and unexpected information has been obtained. For a variety of reasons, "hard metals" have dominated the research and development scene of "hard materials".