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pro vyhledávání: '"A.H Cottrell"'
Autor:
A.H. Cottrell
Publisher Summary This chapter presents a brief overview of work hardening. The turbulent flow of fluids is the most difficult remaining problem in classical physics. Work hardening is worse. The great complicating feature of fluid flow—the presenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a14a6e81c2b4004a55fc8b4616ae513
https://doi.org/10.1016/s1572-4859(02)80002-x
https://doi.org/10.1016/s1572-4859(02)80002-x
Autor:
A.H. Cottrell, W.M. Lomer
Publikováno v:
The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science. 46:711-719
An analysis is made of published data on the recovery of resistivity during the annealing of metals at low temperatures, after damage by irradiation, quenching, or cold work. Interpreted in terms of the migration and annihilation of point defects, th
Autor:
W.A Rachinger, A.H Cottrell
Publikováno v:
Acta Metallurgica. 4:109-113
Crystals of ordered beta brass slip along 〈111〉; those of ammonium and thallium halides slip along 〈100〉. These observations can be interpreted in terms of partial dislocations in the simple cubic lattice of the caesium chloride structure. Wh
Autor:
R. Maddin, A.H. Cottrell
Publikováno v:
The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science. 46:735-743
Summary A large increase in the critical shear stress of high-purity aluminium single crystals can be achieved by water quenching, instead of furnace cooling, after annealing at a high temperature. This quench-hardening effect is insensitive to purit
Autor:
A.H. Cottrell
Publikováno v:
The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science. 44:829-832
Substitutional solute atoms in aluminium usually diffuse too slowly to cause appreciable strain ageing at room temperature. However, if the concentration of vacancies is increased by plastic deform...
Autor:
J.R. Griffiths, A.H. Cottrell
Publikováno v:
Journal of the Mechanics and Physics of Solids. 13:135-140
N otch bend tests have been made on 3 % Si steel at 295°K and 77°K, and compared with plain tensile tests on the same material. A sensitive etching technique has been used to detect the earliest stages of plastic yielding from the observation of in
Autor:
A.H Cottrell, H.W Paxton
Publikováno v:
Acta Metallurgica. 2:3-8
The effects of plastic twisting on the tensile deformation of aluminium crystals are examined. After such a twist the tensile stress needed to continue tensile straining is sharply increased and, in some cases, this is followed by a period of increas
Publikováno v:
Acta Metallurgica. 3:331-338
When a single crystal of alpha-brass is strained in tension the conjugate slip system does not become fully active until the tensile axis has “overshot” the [100]–[111] symmetry line appreciably. Experiments on such crystals described in the pr
Autor:
A.H. Cottrell, D.E. Rimmer
Publikováno v:
Philosophical Magazine. 2:1345-1353
Estimates are made of the energies of interstitial and substitutional solutions of inert gas atoms in a simple metal. The loss of cohesion round such an atom is taken into account by regarding the atom as occupying a vacancy in the metal. Most of the
Publikováno v:
The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science. 44:1064-1067
Summary In the dilatation field of an edge dislocation in a metal the Fermi energy and ground state of the conduction electrons are both altered. To preserve a constant level of the Fermi surface everywhere, a charge shift occurs by a redistribution