Download or read book Wear and Fretting Fatigue Resistant Coatings for Titanium Alloys written by Robert K. Betts and published by . This book was released on 1974 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies were performed to identify treatments to alleviate the effects of wear on fatigue properties of Ti-6Al-4V, Ti-5Al-4Mo-4Cr-2Sn-2Zr (Ti-17) and Ti-8Al-1Mo-1V. The mechanisms of wear studied were fretting fatigue and sliding wear fatigue. Fretting fatigue tests were performed using high cycle fatigue specimens with shoes bolted across the gauge sections at 25,000 psi contact pressure. The shoes induced fretting as the result of alternating bending strain motion along the edges of the contact interface. Sliding wear fatigue tests were performed by a two-step method including first the cyclic rubbing of fatigue specimens by wear shoes for 10,000 strokes of 5 mils length under 50,000 psi contact pressure. Subsequently, the specimens were tested in low cycle or high cycle fatigue to determine the effect of wear on the endurance limit. In fretting tests of Ti-6Al-4V at room temperature, and of Ti-6Al-4V and Ti-17 at 650F, a Cu shim insert between the specimen/shoe interface inhibited fretting fatigue. In sliding wear tests of all three Ti alloys at room temperature, a plasma sprayed coating of Al-bronze containing 10% carburundum polyimide prevented loss of fatigue strength. The Al-bronze/carburundum polyimide not only protected fatigue specimens to which it was applied, but also it did not cause damage to uncoated fatigue specimens against which it was rubbed. Other coatings and surface treaments evaluated did not afford complete wear protection.
Download or read book Wear Resistant Coatings for Titanium Alloys Fretting Fatigue of Uncoated Ti 6Al 4V written by R. K. Betts and published by . This book was released on 1971 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the work was to define and establish conditions of fretting wear on uncoated, shot-peened Ti-6Al-4V under which conditions fatigue effects may be expected in aircraft gas turbine engine compressor applications. The study was divided into two tasks, each concerning a specific wear phenomenon and resulting fatigue effects. Task 1 involved classic fretting fatigue between bolted surfaces relating to aircraft compressor disc assemblies. Task 2 involved studies of wear simulating that between surfaces of dovetails, in which contact pressure and displacement are related to dynamic loads.
Download or read book Selected fretting wear resistant coatings for titanium 6 percent aluminum 4 percent vanadium alloy written by Robert C. Bill and published by . This book was released on 1976 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fretting Resistant Coatings for Titanium Alloys written by Donulus J. Padberg and published by . This book was released on 1971 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report describes a program undertaken to establish the effect of airframe design parameters upon the severity of fretting in titanium structures and to determine the ability of selected coatings to prevent fretting induced fatigue failures. A test specimen was designed to simulate a structural joint and a series of fatigue tests was performed to determine the conditions most conducive to fretting initiated failure. It was found that at low stress levels and using tapered interference fit fasteners, the number of fatigue cycles accumulated to the point that fractures originated from fretting damage. A survey was made of titanium coatings technology and testing and three coatings were selected. On the basis of their properties and minimal degradation of Ti-6Al-6V-2Sn fatigue resistance, a chemical conversion coating and a commercial anodize coating were chosen along with a dry film lubricant. Fatigue tests were made of Ti-6Al-6V-2Sn specimens protected by the coatings from Task II. The coatings essentially eliminated the fretting induced fatigue failures of Task I. Final coating performance verification tests on Ti-6Al-4V and Ti-6Al-2Sn-4Zr-6Mo specimens demonstrated the same improvement using dry film lubricant applied to a shot peened surface. (Author).
Download or read book Fretting Fatigue written by David W. Hoeppner and published by ASTM International. This book was released on 2000 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes 36 of the 40 papers presented at the symposium, and a collection of six keynote papers providing background on the subject. Topics covered include parameter effects, environmental effects, crack nucleation, material and microstructural effects, damage analysis, fracture mechanic
Download or read book Standardization of Fretting Fatigue Test Methods and Equipment written by Mahmoud Helmi Attia and published by ASTM International. This book was released on 1992 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fretting Wear and Fretting Fatigue written by Tomasz Liskiewicz and published by Elsevier. This book was released on 2022-12-07 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fretting Wear and Fretting Fatigue: Fundamental Principles and Applications takes a combined mechanics and materials approach, providing readers with a fundamental understanding of fretting phenomena, related modeling and experimentation techniques, methods for mitigation, and robust examples of practical applications across an array of engineering disciplines. Sections cover the underpinning theories of fretting wear and fretting fatigue, delve into experimentation and modeling methods, and cover a broad array of applications of fretting fatigue and fretting wear, looking at its impacts in medical implants, suspension ropes, bearings, heating exchangers, electrical connectors, and more. Covers theoretical fundamentals, modeling and experimentation techniques, and applications of fretting wear and fatigue Takes a combined mechanics and materials approach Discusses the differences and similarities between fretting wear and fretting fatigue as well as combined experimental and modeling methods Covers applications including medical implants, heat exchangers, bearings, automotive components, gas turbines, and more
Download or read book High Temperature Alloys for Gas Turbines 1982 written by R. Brunetaud and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 1060 pages. Available in PDF, EPUB and Kindle. Book excerpt: The European Collaborative Programme on Materials for Gas Turbines known as COST-50 was initiated in 1971 and has been supported since then by the Commission of European Communities. The achievements made during the first phase of COST-50 were reviewed at the Conference held in Liege, September 25-27, 1978 and published by Applied Science Publishers Ltd. Nine European Countries : Austria, Belgium, the Federal Republic of Germany, France, Italy, The Netherlands, Sweden, Switzerland, the United Kingdom, and the Joint Research Center of the Community, agreed to continue their participation in COST-50 and the results of the second phase were presented at the Conference held in Liege, October 4-6, 1982 under the following headings : - Corrosion and Coatings - Fatigue, Creep and Structural Stability - Processing The technical sessions consisted of invited papers reviewing recent progress in the development of high temperature alloys with particular emphasis on the results of the European Collaborative Programme. Furthermore, some areas were reviewed by eminent speakers from the United States of America, due to their expertise in their respective fields. In this context and as a tradition introduced in 1978, the keynote lecture "Superalloys technology : today and tomorrow" was del ivered by Dr. F. L. Versnyder. The Conference was completed with a significant Poster Session comprising about fifty contributions from Europe and elsewhere. This book comprises a total of fifty four contributions representing almost all of the papers delivered at the technical sessions and a large part of the presentations made at the Poster Session.
Download or read book Surface Engineering of Light Alloys written by Hanshan Dong and published by Elsevier. This book was released on 2010-05-24 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growing use of light alloys in industries such as aerospace, sports equipment and biomedical devices is driving research into surface engineering technologies to enhance their properties for the desired end use. Surface engineering of light alloys: Aluminium, magnesium and titanium alloys provides a comprehensive review of the latest technologies for modifying the surfaces of light alloys to improve their corrosion, wear and tribological properties. Part one discusses surface degradation of light alloys with chapters on corrosion behaviour of magnesium alloys and protection techniques, wear properties of aluminium-based alloys and tribological behaviour of titanium alloys. Part two reviews surface engineering technologies for light alloys including anodising, plasma electrolytic oxidation, thermal spraying, cold spraying, physical vapour deposition, plasma assisted surface treatment, PIII/PSII treatments, laser surface modification, ceramic conversion and duplex treatments. Part three covers applications for surface engineered light alloys including sports equipment, biomedical devices and plasma electrolytic oxidation and anodised aluminium alloys for spacecraft applications. With its distinguished editor and international team of contributors, Surface engineering of light alloys: Aluminium, magnesium and titanium alloys is a standard reference for engineers, metallurgists and materials scientists looking for a comprehensive source of information on surface engineering of aluminium, magnesium and titanium alloys. Discusses surface degradation of light alloys considering corrosion behaviour and wear and tribological properties Examines surface engineering technologies and modification featuring plasma electrolytic oxidation treatments and both thermal and cold spraying Reviews applications for engineered light alloys in sports equipment, biomedical devices and spacecraft
Download or read book Medical Applications of Titanium and Its Alloys written by Jack E. Lemons and published by ASTM International. This book was released on 1996 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thirty papers presented at a 1994 symposium cover the basic materials science issues regarding the processing of titanium alloys, and the controversy regarding their use in medicine. Coverage includes orthopaedic, dental, and cardiovascular applications, with a primary focus on the orthopaedic. Info
Download or read book Titanium and Titanium Alloys written by and published by . This book was released on 1974 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Advanced Coatings as Palliatives for Avoidance of Fretting and Galling in Titanium Alloy written by and published by . This book was released on 2001 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report has been developed under a SBIR contract for Topic AF00-167. The titanium (Ti) turbine engine components such as blades and discs are susceptible to fretting related damage and therefore is a major concern for U.S. Air Force. The purpose of the Phase I work was to develop advanced multifunctional coatings as palliatives for mitigating the fretting related damage in titanium alloy and to rationalize the fretting damage with finite element analysis. Vacuum filtered arc and magnetron sputtering techniques were used to develop various coatings. The composition and structure of the developed coatings were thoroughly characterized. Fretting wear and friction behavior of the coatings deposited on Ti alloy was evaluated in a reciprocating pin-on-flat configuration with small displacement amplitude. Most of the coatings showed considerable promise in mitigating fretting wear. Limited fretting fatigue tests were also conducted on coated specimens. So far no improvement in the fatigue life of coated specimens was found. Based on finite element analysis an expression was developed which may help in selecting suitable coatings for enhanced fatigue life.
Download or read book Thermal Spray Fundamentals written by Pierre L. Fauchais and published by Springer Science & Business Media. This book was released on 2014-01-24 with total page 1587 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides readers with the fundamentals necessary for understanding thermal spray technology. Coverage includes in-depth discussions of various thermal spray processes, feedstock materials, particle-jet interactions, and associated yet very critical topics: diagnostics, current and emerging applications, surface science, and pre and post-treatment. This book will serve as an invaluable resource as a textbook for graduate courses in the field and as an exhaustive reference for professionals involved in thermal spray technology.
Download or read book Vibration and Wear in High Speed Rotating Machinery written by Júlio M. Montalvão e Silva and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Study Institute on Vibration and Wear Damage in High Speed Rotating Machinery, Tróia, Sebútal, April 10-22, 1989
Download or read book Fretting Corrosion and Fretting Fatigue of Titanium and Titanium Alloys written by Milan Kanti Dutta and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Modification Technologies written by T. S. Sudarshan and published by ASM International. This book was released on 2006-01-01 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt:
