8/9/10 187229 EMA Number: 199904-F1-D-0119
Aeroengine materials: past, present and future. Glover, N E ; Hicks, M A Rolls-Royce 11th International Conference on Experimental Mechanics , Oxford, UK , 24-28 Aug. 1998
Experimental Mechanics: Advances in Design, Testing and Analysis. II , p. 867-877 ISSN: 90-5809-016-7 Publication Date: Aug. 1998 Publisher: A.A. Balkema , P.O. Box 1675, Rotterdam, 3000 BR, Netherlands , 1998 1998 Country of Publication: Netherlands Journal Announcement: 9904 Document Type: Conference Paper Language: ENGLISH
Advanced materials have been a key technology throughout the history of the aeroengine. The drive for performance has demanded materials with ever greater high temperature strength whilst at the same time having the lowest possible density. Current materials are however now nearing the limits of their potential. New materials are emerging which offer a step change in capability, however, these technologies must demonstrate their value within the current cost dominated market place. This paper reviews the development of aeroengine materials drawing on examples of components for which materials, or associated manufacturing technologies have led to significant improvements in performance. Materials for the future will be discussed, including both the evolutionary development of existing systems and the so called revolutionary material classes. Not neglected are the manufacturing and modelling technologies which will underpin any increase in materials performance or reductions in development lead times. Materials include: Nickel base superalloys, titanium base alloys, intermetallics, aluminides, polymer matrix composites and ceramic matrix composites. Graphs. Descriptors: Conference Paper; Polymer matrix composites-- End uses; Ceramic matrix composites-- End uses; Aerospace-- Materials selection; Aerospace engines-- Materials selection; Engine components-- Materials selection; Thermal resistance Section Headings: F1 Engineering Components & Structures Subfile: D Composites Eng Materials Abs(R) (Dialog® File 293): (c) 2000 Cambridge Scientific Abs. All rights reserved. © 2000 The Dialog Corporation plc

12/9/1 (Item 1 from file: 32) 2070586 MA Number: 200007-43-0303
Purification of iron and steels: a continuous effort from 2000 BC to AD 2000. Le Coze, J Ecole Nationale Superieure des Mines de Saint-Etienne Japan , 2000 Materials Transactions, JIM 41, (1) , 219-232 Jan. 2000 ISSN: 0916-1821 Country of Publication: Japan Journal Announcement: 0007 Document Type: Article Language: ENGLISH Abstract:
The evolution of metal and alloys preparation has been directed, since the beginning of the history of metallurgy, towards (1) the research of better products--better properties, better reproducibility, larger production--, (2) the invention of new tools and machines for production--furnaces, blowing machines, hammers, pure oxygen, chemical analysis-- and (3) the discovery of new scientific or empiric descriptions of matter. An important point is that new tools and machines were produced by using new iron and steels, and new scientific ideas, coming from technicians and workers gave a more precise description of what is meant by "better" product. This continuous circle running from technical application to science and form scientific description to application has been effective from the beginning of metallurgy: without a new product there is no progress of science and without new scientific ideas there are no new products. Examples are taken in ancient and today metallurgy to show that the enormous effort starting 4000 years ago for iron production of more--6000 years--for copper is not finished. Today, it is as difficult as before to increase the purity of metals and alloys, because the overall purity has been increased. However, the new developments towards better alloys depend on new chemical or physical analysis methods and on the conception of new metallurgical processes, including new machines and new ideas, as in the ancient times. Numerical Data; Graphs; Phase Diagrams; Photomicrographs. 29 ref. Descriptors: Journal Article; Iron-- Refining; Steels-- Refining; Purification; Historical metallurgy; Research; New technology Section Headings: 43 (REFINING AND PURIFICATION) METADEX(R) (Dialog® File 32): (c) 2000 Cambridge Scientific Abs. All rights reserved.