Now showing items 36-55 of 80

    • Heat Treating of Aluminum Alloys 

      Unknown author (2013-12-03)
      HEAT TREATING in its broadest sense, refers to any of the heating and cooling operations that are performed for the purpose of changing the mechanical properties, the metallurgical structure, or the residual stress state ...
    • High-Strength Aluminum Powder Metallurgy Alloys 

      J.R. Pickens (2013-12-03)
      This article describes and reviews the latter of these two areas of aluminum P/M technology where high strength and improved combinations of properties are obtained by exploiting the inherent advantages of P/M for alloy ...
    • Hydrostatic Extrusion of Metals and Alloys 

      J.J. Lewandowski and A. Awadallah (2013-12-03)
      IN HYDROSTATIC EXTRUSION, the billet is extruded through a die via the action of a liquid pressure medium instead of the direct application of the load through a ram. In cases of hydrostatic extrusion, the billet is ...
    • The Influence of Alloy Composition on Precipitates of the Al-Mg-Si System 

      C.D. Marioara; S.J. Andersen; H.W. Zandbergen; R. Holmestad (2013-12-03)
      To study how changes in solute elements affect precipitation, six Al-Mg-Si alloys aged at 175 ° C were investigated by transmission electron microscopy (TEM). In alloys with 1.3 at. pct solute, when the Si/Mg ratio exceeds ...
    • Interdiffusion in the Mg-Al System and Intrinsic Diffusion in beta-Mg2Al3 

      Brennan, Sarah; Bermudez, Katrina; Kulkarni, Nagraj S.; Sohn, Yongho (2013-05-07)
      Solid-to-solid diffusion couples were assembled and annealed to examine the diffusion between pure Mg (99.96 pct) and Al (99.999 pct). Diffusion anneals were carried out at 573 K, 623 K and 673 K (300 C, 350 C and 400 C) ...
    • Introduction 

      J. Gilbert Kaufman (2013-12-03)
      The test methods and criteria used to evaluate the fracture characteristics of aluminum alloys are reviewed, and a substantial amount of representative test data for individual lots of aluminum sheet, plate, forgings, ...
    • Machining of Al 

      Unknown author (2013-12-03)
    • Mechanical Properties Data for Selected Aluminum Alloys, 

      Alan F. Liu (2013-12-03)
      Limited mechanical properties data for several selected aluminum alloys are compiled in this appendix. Relatively new aluminum alloys included are 7033, Al-Li 8090 and 2090, rapidly solidified power metallurgy (P/M) aluminum, ...
    • Mechanical Properties p162-169 

      Unknown author (2013-12-03)
    • Metal-Matrix Composites 

      John V. Foltz; Charles M. Blackmon (2013-12-03)
      METAL-MATRIX COMPOSITES (MMCs) are a class of materials with potential for a wide variety of structural and thermal management applications. Metal-matrix composites are capable of providing higher-temperature operating ...
    • Metallurgical Considerations in Fracture Resistance 

      J. Gilbert Kaufman (2013-12-03)
      The application of toughness testing to alloy development has led to a number of high-strength aluminum alloys and special tempers of some alloys with outstanding combinations of strength and toughness. An underlying basis ...
    • Metallurgical Principles 

      Martin Bauser (2013-12-03)
      The extensive use of metals over thousands of years, but in particular during the industrial age, can be attributed to their specific properties. In addition to their good electrical conductivityãassociated with good ...
    • Metallurgy of Heat Treatment and General Principles of Precipitation 

      J E Hatch (2013-12-03)
      The heat treatable alloys contain amounts of soluble alloying elements that exceed the equilibrium solid solubility limit at room and moderately higher temperatures. The amount present may be less or more than the maximum ...
    • Metastable Phases in an Al-Mg-Si Alloy Containing Copper 

      Kenji Matsuda; Yasuhiro Uetani; Tatsuo Sato; Susumu Ikeno (2013-12-03)
      Alloy studied a lab sample with 0.5pct Cu mass content. The Q’phase in an Al-1.0 mass pct Mg2Si-0.5 mass pct Cu alloy at a peak-aged condition of 523 K was observed by a high-resolution transmission electron microscope ...
    • Mg Self-Diffusion 

      Combronde, J.; Brebec, G. (2013-08-09)
      The self-diffusion of magnesium along the c-axis and perpendicular to it has been investigated in the temperature range from 500 to 630 C.
    • Mg Self-Diffusion 

      Shewmon, P. G.; Rhines, F. N. (2013-08-09)
      The determination of the self-diffusion coefficient of magnesium has been made possible recently by discovery of a radioactive isotope, Mg-28 having a half-life of 21.3 hr, and subject to manufacture in useful quantity.
    • Mg-Al Interdiffusion and Phase Growth Kinetics 

      Kulkarni, Kaustubh N.; Luo, Alan A. (2013-05-07)
      Binary interdiffusion data as functions of composition in the Mg-Al system are essential in modeling kinetics of phase transformations in multicomponent Mg and Al alloys. Interdiffusion and phase growth kinetics were studied ...
    • Microstructural Development and Mechanical Properties of Interrupted Aged Al-Mg-Si-Cu Alloy 

      J. Buha; R.N. Lumley; A.G. Crosky (2013-12-03)
      The effects of a recently developed interrupted aging procedure on the microstructural development and mechanical properties of the commercial Al-Mg-Si-Cu alloy 6061 have been studied using transmission electron microscopy ...
    • Microstructure of Alloys 

      J E Hatch (2013-12-03)
      The examination of microstructure is one of the principal means of evaluating alloys and products to determine the effects of various fabrication and thermal treatments, evaluate the effects of new procedures, and analyze ...
    • Modeling and Simulation of the Forming of Aluminum Sheet Alloys 

      J.W. Yoon, F. Barlat (2013-12-03)
      WITH ADVANCES in computer hardware and software, it is possible to model material processing, product manufacturing, product performance in service, and failure. Although the fine-tuning of product manufacturing and ...