Showing papers in "Materials & Design in 1992"

TL;DR: In this paper, the state of the science of producing ceramic, glass, and composite materials using the new methods of chemical micromorphology, and transformation based processing, along with practical applications is examined.

TL;DR: In this article, the preparation and characterization of Sn-Si-O Gels and Raman Spectroscopy of Phosphorous-Doped Silica Gels are discussed.

TL;DR: The Symposium might very well be summarized as a Swedish friend did, ‘In 1986 I visited the symposium and i had never seen so many cracked ceramic pieces in my life, but today most components seem to be running and running in engine tests without failure’ as discussed by the authors.

TL;DR: In this article, the authors present an exposition on the embryonic field of smart materials and structures, prior to discussing how different classes of these innovative biomimetic materials will influence design practices pertaining to diverse commercial and industrial products in the machine tool, medical, aerospace, automotive and sporting goods industries.

TL;DR: In this article, the GPX range of thermal barrier coatings are compared to aircraft TBCs and diesel TBC, with particular reference to GPX's GPX-based GPXX-1.

TL;DR: In this article, an introduction to ultra-low-carbon bainitic steels and their typical microstructural details is presented, with the aim of improving bainite's hardenability and increasing its toughness.

TL;DR: In this paper, a review of the preparation and properties of cubic boron nitride thin films is presented and emphasis is placed on the relationship between properties, especially hardness and microstructures.

TL;DR: In this article, an integrated approach to the interrelated activities of product design, materials selection and cost estimation is proposed, where a wide range of engineering materials is first narrowed to a limited number of candidates using design limitations and performance requirements, and then the candidate materials are used to develop an optimum design which is then used in cost estimation.

TL;DR: The mechanical-alloying method has been used by Dour Metal S.A. as mentioned in this paper to produce a five-member family of experimental oxide-dispersion-strengthened (ODS) FeCrAl alloys that combine strength and oxidation resistance at service temperatures to 1200°C.

TL;DR: In this paper, two neural networks have been developed based on case histories of service experience with austenitic stainless steels in chloride-bearing water to predict the chloride-induced stress corrosion risk in an intelligent, automated way.

TL;DR: Avesta 654 SMO as discussed by the authors is a second generation superaustenitic stainless steel with the objective of achieving nickel alloy corrosion resistance at a moderate cost, and it is shown that it is more resistant to localized corrosion in aggressive chloride solutions and that it compares favourably with some nickel base alloys.

TL;DR: In this paper, an investigation was carried out to study the influence of austenite on the coercive force, the electrical resistivity and the hardness values of 18Ni-250, 18 Ni-300 and 18Ni -350 maraging steels.

TL;DR: In this paper, the continous-detonation spraying (CDS) process is used for high quality coatings of metallic alloys, cermets or synthetic base materials.

TL;DR: In this paper, a theory for materials optimization is presented which is used to give a mathematical definition of the merit parameter concept, and in this way, the merit parameters can be used to rank accurately candidate materials in a selection process.

TL;DR: In this paper, a method to rank materials when more than one merit parameter is involved is presented, where the materials are placed in a property space with the component section size controlling properties as coordinates.

TL;DR: A continuing need exists within the aerospace industry for improved materials and processing technologies, and Titanium aluminides, with high specific strength and stiffness, are among the most promising candidates as discussed by the authors.

TL;DR: A brief overview of surface engineering technologies that are applied to powder-metallurgy components and powder-coated components is given in this paper, where applications are discussed and areas for future research are put forward.

TL;DR: In this article, the thermomechanical and microstructural stability of Incoloy 909 during possible joining and densification treatments is investigated, and thermal expansion behaviour and joining/densification temperatures suitable for retaining the desired structure of the superalloy are presented.

TL;DR: In this article, a graphical method to determine the principal thermal conductivities of continuous fiber-reinforced composites is presented, where a good estimate for the transverse conductivity of high-quality composites may be obtained from a formula which uses a statistical parameter to describe a microstructure having a random dispersion of equi-sized cylinders.

TL;DR: The 1991 Fall Meeting of the Materials Research Society (MRS) was held in Boston, USA from 1-7 December 1991 as mentioned in this paper, and more than 4000 scientists attended to hear almost 3000 papers presented across 26 specialist symposia.

TL;DR: The great majority of all power gears are manufactured in hardened or case-carburized steel, with a smaller number manufactured from cast iron and from non-metallic materials such as thermoplastics and laminated bonded wood, fabric and paper materials.

TL;DR: The high throwing power of chemical vapour deposition (CVD) makes it an excellent method for coating substrate surfaces of random shape, such as the surfaces of multifilament fibres.

TL;DR: In this article, the quantified effect of secondary and remelted steelmaking processes and how they can be of benefit to the gear producer is reviewed in detail, including a section on remelting steels that offer further improvements in cleanness levels.

TL;DR: In this paper, the progress made in developing these concepts into reality and attempts to define what the future applications are likely to be for these emerging "multidisciplinary" materials systems.