Download or read book Characterization of Casting Defects in Typical Castings of a Directionally Solidified Superalloy written by and published by . This book was released on 1979 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: A program was conducted to assess the effects of casting defects in directionally solidified (DS) material. The technical approach involved two tasks, the first including the characterization of typical casting defects in F- 100 1st and 2nd stage PWA-1422 production turbine blades and the second including the evaluation of thin sheet test specimens cast deliberately to contain defects. The defects included microshrinkage, inclusions and grain misorientation and represented a range of severity levels including conditions exceeding current production acceptance criteria. The analysis of production castings indicated that substantial decreases in the rejection rate could be achieved with only minor relaxation of the acceptability criteria. In addition, dross inclusions were found to be the single most frequent cause for casting rejections.
Download or read book The Characterization of Freckle Casting Defects in Directionally Solidified Nickel base Superalloy Turbine Blades written by Erik M. Mueller and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Several morphologies of gamma-prime were observed, including grain boundary gamma-prime, gamma-prime adjacent to grain boundaries, and eutectic gamma-prime. It will be shown that these eutectic colonies do not form by eutectic growth, but rather by cellular solidification. Further, there appears to be no preferred orientations of the freckle grains relative to the casting. Although not exclusive to freckle regions, the surface of the casting has an external alumina layer that is likely the result from a reaction between the ceramic mold and the Al in the liquid metal. Further, there are an unusually large number of MC carbides immediately underneath the alumina layer. These reactions, the freckle characteristics, and the microstructural evolution during single crystal growth will be described in some detail.
Download or read book Analysis of Casting Defects written by American Foundrymen's Society and published by . This book was released on 1974 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book helps foundrymen eliminate or minimize inherent casting problems, imrpove casting quality and reduce cleaning and finishing costs.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Advances in the Science and Engineering of Casting Solidification written by Laurentiu Nastac and published by Springer. This book was released on 2016-12-16 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection encompasses the following four areas: (1) Solidification processing: theoretical and experimental investigations of solidification processes including castings solidification, directional solidification of alloys, electromagnetic stirring, ultrasonic cavitation, mechanical vibration, active cooling and heating, powder bed-electron beam melting additive manufacturing, etc. for processing of metals, polymers and composite materials; (2) Microstructure Evolution: theoretical and experimental studies related to microstructure evolution of materials including prediction of solidification-related defects and particle pushing/engulfment aspects; (3) Novel Casting and Molding Processes: modeling and experimental aspects including high pressure die casting, permanent casting, centrifugal casting, low pressure casting, 3D silica sand mold printing, etc.; and (4) Cast Iron: all aspects related to cast iron characterization, computational and analytical modeling, and processing.
Download or read book Analysis of Casting Defects written by American Foundrymen's Society. Analysis of Casting Defects Committee and published by . This book was released on 1947 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1980 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Foundry Processes written by Seymour Katz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: For a number of years it has been a General Motors Research Laboratories custom to hold a symposium on a subject which is new and emerging, and to invite the best people in the world in that subject to come together to talk to each other. Initially, I had some difficulty in regarding foundry processes as a new and emerging subject. Copper alloys have been in foundry practice for about six thousand years. Foundrymen working with those alloys have been recognized, as such, for nearly all that time. Iron has a much shorter history, probably only three or four thousand years. So what's new? What is new is that a subject which has always been so complex and so difficult that it could only be a craft skill, with bits and pieces of knowledge and bits and pieces of insight, has begun to yield to new abilities to solve very complex problems. We do this now because we can handle great amounts of data by computational means, using new and more complicated theoretical treatments than we could deal with before. In fact, we have a new technology with which we can attack these terribly difficult problems. Thus, foundry processing is becoming a new subject because new things can be done with it.
Download or read book Proceedings of the Seventh International Conference on Vacuum Metallurgy November 26 30 1982 Keidanren Kaikan Tokyo Japan written by and published by . This book was released on 1982 with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Casting Defects written by and published by . This book was released on 1974 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atlas of Defects in Castings written by Institute of British Foundrymen and published by . This book was released on 1961 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Precision Forming Technology of Large Superalloy Castings for Aircraft Engines written by Baode Sun and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes systematically the theory and technology of the precision forming of large, complex and thin-walled superalloy castings for aircraft engines, covering all the important basic aspects of the manufacturing process, including process design, wax pattern, ceramic molds, casting and solidification, heat treatment, repair casting and dimension precision control. The correlation of casting defects, structural characteristics and performance of castings is revealed through a range of tests. It also discusses the latest technologies and advances in this field - such as imaging the solidification process by means of synchrotron radiography, 3D computerized tomography and reconstruction of microporosity defects, analysis and diagnosis of error sources for dimension over-tolerance and adjusted pressure casting technology - which are of particular interest. Providing essential insights, the book offers a valuable guide to the design and manufacture of superalloy casting parts for aircraft engines.
Download or read book Advanced Casting Technology written by Jay Easwaran and published by . This book was released on 1987 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Casting Defects Handbook written by American Foundrymen's Society and published by . This book was released on 1984 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Casting Design and Performance written by and published by ASM International. This book was released on 2009 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by and published by . This book was released on 1988 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Casting Defects written by and published by . This book was released on 1947 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
