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age-hardening+alloy

  • 1 age-hardening alloy

    Англо-русский словарь промышленной и научной лексики > age-hardening alloy

  • 2 yaşlanma alaşımı

    age hardening alloy

    Turkish-English dictionary > yaşlanma alaşımı

  • 3 дисперсионно-твердеющий сплав

    age-hardening alloy, precipitation hardened alloy
    * * *

    Русско-английский политехнический словарь > дисперсионно-твердеющий сплав

  • 4 дисперсионно-твердеющий сплав

    age-hardening alloy, precipitation hardening alloy

    Русско-английский исловарь по машиностроению и автоматизации производства > дисперсионно-твердеющий сплав

  • 5 дисперсионно-твердеющий сплав

    Универсальный русско-английский словарь > дисперсионно-твердеющий сплав

  • 6 дисперсионно твердеющий сплав

    Electrochemistry: age-hardening alloy

    Универсальный русско-английский словарь > дисперсионно твердеющий сплав

  • 7 Merica, Paul Dyer

    SUBJECT AREA: Metallurgy
    [br]
    b. 17 March 1889 Warsaw, Indiana, USA
    d. 20 October 1957 Tarrytown, New York, USA
    [br]
    American physical metallurgist who elucidated the mechanism of the age-hardening of alloys.
    [br]
    Merica graduated from the University of Wisconsin in 1908. Before proceeding to the University of Berlin, he spent some time teaching in Wisconsin and in China. He obtained his doctorate in Berlin in 1914, and in that year he joined the US National Bureau of Standards (NBS) in Washington. During his five years there, he investigated the causes of the phenomenon of age-hardening of the important new alloy of aluminium, Duralumin.
    This phenomenon had been discovered not long before by Dr Alfred Wilm, a German research metallurgist. During the early years of the twentieth century, Wilm had been seeking a suitable light alloy for making cartridge cases for the Prussian government. In the autumn of 1909 he heated and quenched an aluminium alloy containing 3.5 per cent copper and 0.5 per cent magnesium and found its properties unremarkable. He happened to test it again some days later and was impressed to find its hardness and strength were much improved: Wilm had accidentally discovered age-hardening. He patented the alloy, but he made his rights over to Durener Metallwerke, who marketed it as Duralumin. This light and strong alloy was taken up by aircraft makers during the First World War, first for Zeppelins and then for other aircraft.
    Although age-hardened alloys found important uses, the explanation of the phenomenon eluded metallurgists until in 1919 Merica and his colleagues at the NBS gave the first rational explanation of age-hardening in light alloys. When these alloys were heated to temperatures near their melting points, the alloying constituents were taken into solution by the matrix. Quenching retained the alloying metals in supersaturated solid solution. At room temperature very small crystals of various intermetallic compounds were precipitated and, by inserting themselves in the aluminium lattice, had the effect of increasing the hardness and strength of the alloy. Merica's theory stimulated an intensive study of hardening and the mechanism that brought it about, with important consequences for the development of new alloys with special properties.
    In 1919 Merica joined the International Nickel Company as Director of Research, a post he held for thirty years and followed by a three-year period as President. He remained in association with the company until his death.
    [br]
    Bibliography
    1919, "Heat treatment and constitution of Duralumin", Sci. Papers, US Bureau of Standards, no. 37; 1932, "The age-hardening of metals", Transactions of the American Institution of Min. Metal 99:13–54 (his two most important papers).
    Further Reading
    Z.Jeffries, 1959, "Paul Dyer Merica", Biographical Memoirs of the National Academy of Science 33:226–39 (contains a list of Merica's publications and biographical details).
    LRD

    Biographical history of technology > Merica, Paul Dyer

  • 8 Stanley, Robert Crooks

    [br]
    b. 1 August 1876 Little Falls, New Jersey, USA
    d. 12 February 1951 USA
    [br]
    American mining engineer and metallurgist, originator of Monel Metal
    [br]
    Robert, the son of Thomas and Ada (Crooks) Stanley, helped to finance his early training at the Stevens Institute of Technology, Hoboken, New Jersey, by working as a manual training instructor at Montclair High School. After graduating in mechanical engineering from Stevens in 1899, and as a mining engineer from the Columbia School of Mines in 1901, he accepted a two-year assignment from the S.S.White Dental Company to investigate platinum-bearing alluvial deposits in British Columbia. This introduced him to the International Nickel Company (Inco), which had been established on 29 March 1902 to amalgamate the major mining companies working the newly discovered cupro-nickel deposits at Sudbury, Ontario. Ambrose Monell, President of Inco, appointed Stanley as Assistant Superintendent of its American Nickel Works at Camden, near Philadelphia, in 1903. At the beginning of 1904 Stanley was General Superintendent of the Orford Refinery at Bayonne, New Jersey, where most of the output of the Sudbury mines was treated.
    Copper and nickel were separated there from the bessemerized matte by the celebrated "tops and bottoms" process introduced thirteen years previously by R.M.Thompson. It soon occurred to Stanley that such a separation was not invariably required and that, by reducing directly the mixed matte, he could obtain a natural cupronickel alloy which would be ductile, corrosion resistant, and no more expensive to produce than pure copper or nickel. His first experiment, on 30 December 1904, was completely successful. A railway wagon full of bessemerized matte, low in iron, was calcined to oxide, reduced to metal with carbon, and finally desulphurized with magnesium. Ingots cast from this alloy were successfully forged to bars which contained 68 per cent nickel, 23 per cent copper and about 1 per cent iron. The new alloy, originally named after Ambrose Monell, was soon renamed Monel to satisfy trademark requirements. A total of 300,000 ft2 (27,870 m2) of this white, corrosion-resistant alloy was used to roof the Pennsylvania Railway Station in New York, and it also found extensive applications in marine work and chemical plant. Stanley greatly increased the output of the Orford Refinery during the First World War, and shortly after becoming President of the company in 1922, he established a new Research and Development Division headed initially by A.J.Wadham and then by Paul D. Merica, who at the US Bureau of Standards had first elucidated the mechanism of age-hardening in alloys. In the mid- 1920s a nickel-ore body of unprecedented size was identified at levels between 2,000 and 3,000 ft (600 and 900 m) below the Frood Mine in Ontario. This property was owned partially by Inco and partially by the Mond Nickel Company. Efficient exploitation required the combined economic resources of both companies. They merged on 1 January 1929, when Mond became part of International Nickel. Stanley remained President of the new company until February 1949 and was Chairman from 1937 until his death.
    [br]
    Principal Honours and Distinctions
    American Society for Metals Gold Medal. Institute of Metals Platinum Medal 1948.
    Further Reading
    F.B.Howard-White, 1963, Nickel, London: Methuen (a historical review).
    ASD

    Biographical history of technology > Stanley, Robert Crooks

  • 9 aes

    aes, aeris (often used in plur. nom. and acc.; abl. aeribus, Cato ap. Paul. ex Fest. p. 27 Müll., and Lucr. 2, 636; gen. AERVM, Inscr. Orell. 3551), n. [cf. Germ. Eisen = iron, Erz = copper; Goth. aiz = copper, gold; Angl.Sax. ar, ær = ore, copper, brass; Eng. iron, ore; Lat. aurum; with the com. notion of brightness; cf. aurora, etc.].
    I.
    Any crude metal dug out of the earth, except gold and silver; esp.,
    a.
    Aes Cyprium, whence cuprum, copper: scoria aeris, copper dross or scoria, Plin. 34, 11, 24, § 107:

    aeris flos,

    flowers of copper, id. 34, 11, 24, § 107:

    squama aeris,

    scales of copper, Cels. 2, 12 init.:

    aes fundere,

    Plin. 33, 5, 30, § 94:

    conflare et temperare,

    id. 7, 56, 57, § 197:

    India neque aes neque plumbum habet,

    id. 34, 17, 48, § 163:

    aurum et argentum et aes,

    Vulg. Ex. 25, 3.—
    b.
    An alloy, for the most part of copper and tin, bronze (brass, an alloy of copper and zinc, was hardly known to the ancients. For their bronze coins the Greeks adhered to copper and tin till B.C. 400, after which they added lead. Silver is rare in Greek bronze coins. The Romans admitted lead into their bronze coins, but gradually reduced the quantity, and, under Calig., Nero, Vesp., and Domit., issued pure copper coins, and then reverted to the mixture of lead. In the bronze mirrors now existing, which are nearly all Etruscan, silver predominated to give a highly reflecting surface. The antique bronze had about 87 parts of copper to 13 of tin. An analysis of several objects has given the following centesimal parts: statua ex aere, Cic. Phil. 9, 6:

    simulacrum ex aere factum,

    Plin. 34, 4, 9, § 15:

    valvas ex aere factitavere,

    id. 34, 3, 7, § 13.—Hence:

    ducere aliquem ex aere,

    to cast one's image in bronze, id. 7, 37, 38, § 125; and in the same sense poet.:

    ducere aera,

    Hor. Ep. 2, 1, 240:

    aes Corinthium,

    Plin. 34, 2, 3, §§ 5-8; v. Corinthius.—
    II.
    Meton.
    A.
    (Esp. in the poets.) For everything made or prepared from copper, bronze, etc. ( statues, tables of laws, money), and (as the ancients had the art of hardening and tempering copper and bronze) weapons, armor, utensils of husbandry: aes sonit, franguntur hastae, the trumpet sounds, Enn. ap. Non. 504, 32 (Trag. v. 213 Vahl.):

    Et prior aeris erat quam ferri cognitus usus: Aere solum terrae tractabant, aereque belli Miscebant fluctus et vulnera vasta serebant, etc.,

    Lucr. 5, 1287:

    quae ille in aes incidit, in quo populi jussa perpetuasque leges esse voluit,

    Cic. Phil. 1, 17; cf. id. Fam. 12, 1; Tac. A. 11, 14; 12, 53; id. H. 4, 40: aere ( with the trumpet, horn) ciere viros, Verg. A. 6, 165:

    non tuba directi, non aeris cornua flexi,

    Ov. M. 1, 98 (hence also rectum aes, the tuba, in contr. with the crooked buccina, Juv. 2, 118); a brazen prow, Verg. A. 1, 35; the brazen age, Hor. Epod. 16, 64.—In plur.: aera, Cato ap. Paul. ex Fest. p. 27 Müll.; Verg. A. 2, 734; Hor. C. 4, 8, 2 al.—
    B.
    Money: the first Roman money consisted of small rude masses of copper, called aes rude, Plin. 33, 3, 13, § 43; afterwards as coined:

    aes signatum,

    Cic. Leg. 3, 3; Plin. 33, 3, 13, § 43;

    so aes alone: si aes habent, dant mercem,

    Plaut. As. 1, 3, 49:

    ancilla aere suo empta,

    Ter. Phorm. 3, 2, 26: aes circumforaneum. borrowed from the brokers in the forum, Cic. Att. 2, 1: Hic meret aera liber Sosiis, earns them money, Hor. A. P. [p. 61] 345:

    gravis aere dextra,

    Verg. E. 1, 36:

    effusum est aes tuum,

    Vulg. Ez. 16, 36:

    neque in zona aes (tollerent),

    ib. Maarc. 6, 8:

    etiam aureos nummos aes dicimus,

    Dig. 50, 16, 159.—Hence,
    1.
    Aes alienum, lit. the money of another; hence, in reference to him who has it, the sum owed, a debt, Plaut. Curc. 3, 1, 2:

    habere aes alienum,

    Cic. Fam. 5, 6:

    aes alienum amicorum suscipere,

    to take upon one's self, id. Off. 2, 16:

    contrahere,

    to run up, id. Q. Fr. 1, 1, 8:

    facere,

    id. Att. 13, 46:

    conflare,

    Sall. C. 14, 2; 24, 3:

    in aes alienum incidere,

    to fall into debt, Cic. Cat. 2, 9:

    in aere alieno esse,

    to be in debt, id. Verr. 2, 2, 4, § 6; so,

    aere alieno oppressum esse,

    id. Font. 1; so Vulg. 1 Reg. 22, 2:

    laborare ex aere alieno,

    Caes. B. C. 3, 22:

    liberare se aere alieno,

    to get quit of, Cic. Att. 6, 2; so,

    aes alienum dissolvere,

    id. Sull. 56:

    aere alieno exire,

    to get out of, id. Phil. 11, 6.—
    2.
    In aere meo est, trop., he is, as it were, among my effects, he is my friend (only in the language of common conversation):

    in animo habui te in aere meo esse propter Lamiae nostri conjunctionem,

    Cic. Fam. 13, 62; 15, 14.—
    * 3.
    Alicujus aeris esse, to be of some value, Gell. 18, 5.—
    * 4.
    In aere suo censeri, to be esteemed according to its own worth, Sen. Ep. 87.—
    C.
    Sometimes = as, the unit of the standard of money (cf. as); hence, aes grave, the old heary money (as weighed, not counted out):

    denis milibus aeris gravis reos condemnavit,

    Liv. 5, 12:

    indicibus dena milia aeris gravis, quae tum divitiae habebantur, data,

    id. 4, 60; so, aes alone and in the gen. sing., instead of assium:

    aeris miliens, triciens,

    a hundred millions, three millions, Cic. Rep. 3, 10:

    qui milibus aeris quinquaginta census fuisset,

    Liv. 24, 11.—Also for coins that are smaller than an as (quadrans, triens, etc.):

    nec pueri credunt, nisi qui nondum aere, i. e. quadrante, lavantur (those who bathed paid each a quadrans),

    Juv. 2, 152 (cf.:

    dum tu quadrante lavatum Rex ibis,

    Hor. S. 1, 3, 137).—
    D.
    Wages, pay.
    1.
    A soldier's pay = stipendium:

    negabant danda esse aera militibus,

    Liv. 5, 4. And soon after: annua aera habes: annuam operam ede.— Hence in plur., = stipendia, Cic. Verr. 2, 5, 13, § 33.—
    2.
    Reward, payment, in gen., Juv. 6, 125: nullum in bonis numero, quod ad aes exit, that has in view or aims at pay, reward, Sen. Ep. 88.—
    E.
    In plur.: aera, counters; hence also the items of a computed sum (for which, later, a sing. form aera, ae (q. v.), came into use): si aera singula probāsti, summam, quae ex his confecta sit, non probare? Cic. ap. Non. 3, 18.

    Lewis & Short latin dictionary > aes

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