Materials Letters 58 (2004) 3622 – 3629 www.elsevier.com/locate/matlet Workability of Ti–6Al–4V alloy at high temperatures and strain rates S. Bruschia‚ S. Poggiob‚ F. Quadrinib‚ M.E. Tatab‚* b Universitu di Padova‚ Padova‚ Italy ˆ Universita di Roma " Tor Vergata "‚ Dip. Ing. Meccanica‚ Via di Tor Vergata‚ 00133‚ Rome‚ Italy ` Received 21 June 2004; accepted 30 June 2004 Available online 8 August 2004 a Abstract Hot workability of Ti–6Al–4V has been investigated by means of hot compression
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that go into solid solution impose lattice strains on surrounding host atoms Lattice strain field interactions between dislocations and impurity atoms result in restriction of dislocation movement This is one of the most powerful reasons to make alloys‚ which have higher strength than pure metals. Small impurity atoms exert tensile strains (see figure below) Large impurity atoms exert compressive strains Solute atoms tend to
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[pic] Contents |PART I PLANET EARTH | |Chapter 1 Fundamentals of chemistry | | |The scientific method |1 | |Kinetic theory of matter
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metal Zinc Brasses Bronzes Aluminium Aluminium alloys Tin Amount of shrinkage (%) 2.60 1.30-1.55 1.05-2.10 1.65 1.30-1.60 2.00 In practice‚ pattern makers use a special rule or scale‚ called the “pattern maker’s contraction rule”‚ which‚ after providing with necessary allowance‚ is slightly longer than the ordinary rule of the same length. The graduations are oversized by a proportionate amount‚ for example‚ when constructing a pattern for aluminium alloys‚ the pattern maker uses a contraction rule
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Walt Disney CIS 310 Summer 2 Denise Bracken‚ Michelle Campuzano‚ Paul Jaworski Leticia Jones‚ Joshua Serrano‚ Tawni Vollmer Contents Introduction 3 Competitive Forces Model 4 IS Strategy 5 Company Issues 5 Projected Outcome 6 Telecommunications and Internet 7 Works Cited 8 Introduction Walt Disney Company began in the 1920’s and was originally named The Disney Walt Brothers Studio. Throughout the 1930’s Disney released the first colored Mickey Mouse cartoon along with a
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In this article the influence of the important resistance spot welding process parameters on the shear-tensile strength of the welded joints of Inconel alloy 625 was investigated. Experimental study using full factorial design of the welding current‚ welding time‚ and electrode force parameters was conducted. In order to identify the influence of each parameter and their interaction a general linear model and a second order model using response surface method was developed. Nonlinear correlation
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respond to Morgan Stanley’s proposal? 2. Valuing AOL Merger a. The Merger was completed on January 11‚ 2001. Was it a good idea? Did AOL stockholders receive value? Did Time Warner shareholders receive value? b. Do you believe the new company will succeed? If so‚ how will value be created short and long term? c. What could go wrong with this “mega merger”? What are the most significant threats on the horizon for AOL Time Warner? d. Do you believe the company will
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John Fairchild‚ fashion critic during the 1960’s‚ once said “Style is an expression of individualism mixed with charisma. Fashion is something that comes after a style.” Not so long during the 1960s’ the world of fashion was a colorful and creative era ‚ it was filled with many fashion icons and beautiful designs. Clothing trends‚ styles‚ magazine models‚ icons‚and glamour was every girl’s highlight everyday. Throughout the 1960’s‚ the fashion of the time was always changing for teen girls they would
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the subject can now be studied under the following headings : a) Physical metallurgy b) Extraction metallurgy c) Process metallurgy In the recent years studying the metallurgy science gave to humanity an ever growing range of useful alloys. Whilst many of these alloys are put to purposes of destruction‚ we must not forget that others have contributed to the material progress of mankind and to his domestic comfort. This understanding of the materials resources and nature enable the engineers to select
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