The critical shear stress in α-brass as a function of zinc concentration and temperature

Jamison, R.E.; Sherrill, F. A.

doi:10.1016/0001-6160(56)90138-9

Cited by 33 publications

(1 citation statement)

References 6 publications

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“…The data for the critical resolved shear stress of Cu-Zn up to about 35 at. % Zn (Goler andSachs 1929, Jamison andSherrill 1956), and for Ni-Co up to 40 at. % CO (Meissner 1959) are also of this form in relation to the composition (see Flinn 1962).…”

Section: The Relations Of P M / P and Hd To The Alloy Compositionmentioning

confidence: 95%

Friction, wear and surface hardness in abrasion of binary solid-solution alloys in the copper-gold system

Lin

Wilman

1968

J. Phys. D: Appl. Phys.

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The friction coefficient μ, the mass wear rate M and the surface micro-hardness H D are measured in abrasion of Cu-Au alloys (in the fully abraded, and thus fully work-hardened, surface state), sliding on dry `smooth-cut' steel files at a load of about 1 kg and a speed of a few cm s−1. μ and M/ρ (where ρ is the density) are found to be nearly the same as for a pure cubic metal of similar H D, and vary with alloy composition in a nearly parabolic manner analogous to that found by Sachs and Weerts for the shear stress of Ag-Au alloys. The deviations Δμ and Δ(M/ρ) from a Vegard's-law type of linear dependence on composition are approximately proportional to each other and to|Δa|, the lattice dimension deviation from Vegard's law, but they vary non-linearly with ΔH D. Similar results are indicated for the Cu-Zn and Cu-Ni alloy systems. On this basis the probable μ, M/ρ and H D can be estimated for abrasion of face-centred-cubic alloys of other binary solid-solution systems. The stored energy in the abraded alloy surface regions is also estimated from μ and M.

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Section: The Relations Of P M / P and Hd To The Alloy Compositionmentioning

confidence: 95%

Friction, wear and surface hardness in abrasion of binary solid-solution alloys in the copper-gold system

Lin

Wilman

1968

J. Phys. D: Appl. Phys.

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Dislocation groups, multipoles, and friction stresses in α-CuZn alloys

Olfe

Neuhäuser

1988

Phys. Stat. Sol. (a)

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Characteristic features of the dislocation structure developed in the first stage of deformation of single-glide oriented crystals of concentrated f.c.c. alloys like a-CuZn are extended niultipoles in the primary slip planes. Their various configurations are explained by considering their formation in the case that the dislocations destroy part of the friction stress by cutting through the effective obstacles which in this alloy are assumed to be short-range ordered clusters. This obstacle destruction mechanism which should occur quite generally in concentrated alloys favours the development of extended dislocation groups. It is shown that in this case the original value of the friction strrss may well exceed the macroscopically measured critical resolved shear stress. Charakteristisches Merkmal der Versetzungsstruktur im Bereich I der Verformung von fur Einfachgleitung orientierten Einkristallen konzentrierter k.f.2.-Legierungen wie a-CuZn sind ausgedehnte Multipole auf den priniaren Gleitebenen. Ihre verschiedenen Konfigurationen lassen sich aus ihrer Bildung dann erklaren, wenn die Versetzungen einen Teil der Reibungsspannung beim Durchschneiden der effektiven Hindernisse abbauen, die in dieser Legierung als nahgeordnete Cluster vermutet werden. Dieser Mechanismus des Hindernisabbaus, der ganz allgemein in konzentrierten Legierungen auftreten sollte, begiinstigt die Bildung groRer Versetzungsgruppen. Es wird gezeigt, daR in diesem Fall der ursprungliche Reibungsspannungswert, deutlich iiber der makroskopisch gemessenen kritischen Schubspannung liegen kann.

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Time and Temperature Dependence of Plasticity Characteristics in Monocrystals

Regel¹

1962

Plasticity of Crystals

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The critical shear stress in α-brass as a function of zinc concentration and temperature

Cited by 33 publications

References 6 publications

Friction, wear and surface hardness in abrasion of binary solid-solution alloys in the copper-gold system

Friction, wear and surface hardness in abrasion of binary solid-solution alloys in the copper-gold system

Dislocation groups, multipoles, and friction stresses in α-CuZn alloys

Time and Temperature Dependence of Plasticity Characteristics in Monocrystals

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