Study of the dependence of strength characteristics, ductility, and damping capacity on electron concentration in copper-aluminum-tin alloys

1981 ◽  
Vol 13 (8) ◽  
pp. 1035-1039
Author(s):  
V. V. Matveev ◽  
G. Ya. Yaroslavskii ◽  
S. Yu. Kondrat'ev ◽  
B. S. Chaikovskii
Keyword(s):  
Electron Concentration ◽  
Strength Characteristics ◽  
Damping Capacity ◽  
Tin Alloys ◽  
Copper Aluminum

Damping capacity and mechanical properties of hardened ?-alloys in the copper-aluminum-nickel system

1984 ◽  
Vol 16 (11) ◽  
pp. 1623-1626
Author(s):  
S. Yu. Kondrat'ev ◽  
O. G. Zotov ◽  
V. Ya. Yaroslavskii ◽  
B. S. Chaikovskii
Keyword(s):  
Mechanical Properties ◽  
Damping Capacity ◽  
Copper Aluminum ◽  
Copper Aluminum Nickel

Effect of alloying with silicon on the damping capacity, physicomechanical properties, and microstructure of quenched alloys in the copper-aluminum system

1983 ◽  
Vol 15 (11) ◽  
pp. 1509-1513
Author(s):  
O. G. Zotov ◽  
S. Yu. Kondrat'ev ◽  
B. S. Chaikovskii ◽  
C. Ya. Yaroslavskii ◽  
V. V. Matveev
Keyword(s):  
Physicomechanical Properties ◽  
Damping Capacity ◽  
Copper Aluminum ◽  
Effect Of Alloying

scholarly journals Strength Characteristics of Copper/Aluminum Alloy Friction Welded Joint.

1998 ◽  
Vol 64 (624) ◽  
pp. 2197-2202 ◽  
Author(s):  
Yoshiyasu ITOH ◽  
Takahiko SHINDOH ◽  
Masahiro SAITOH ◽  
Masaru TEZUKA
Keyword(s):  
Aluminum Alloy ◽  
Welded Joint ◽  
Strength Characteristics ◽  
Copper Aluminum

Damping capacity of copper-aluminum alloys under the action of static tension

1985 ◽  
Vol 17 (5) ◽  
pp. 657-661
Author(s):  
D. E. Shpak ◽  
M. M. Grigoryuk ◽  
S. Yu. Kondrat'ev ◽  
G. Ya. Yaroslavskii
Keyword(s):  
Aluminum Alloys ◽  
Damping Capacity ◽  
Static Tension ◽  
Copper Aluminum

scholarly journals The lattice spacings of the primary solid solutions in magnesium of the metals of Group IIIB and of tin and lead

1942 ◽  
Vol 180 (980) ◽  
pp. 107-121 ◽  
Keyword(s):  
Solid Solutions ◽  
Brillouin Zone ◽  
Electron Concentration ◽  
Interatomic Distance ◽  
Lattice Spacing ◽  
Axial Ratio ◽  
Size Factor ◽  
Tin Alloys ◽  
Elementary State ◽  
Thallium Alloys

The lattice spacings of the primary solid solutions in magnesium of aluminium, gallium, thallium, tin and lead have been accurately measured. The new data confirm that the effect of increasing the valency of the solute is to tend to expand the lattice of magnesium. Thus, although the interatomic distance for tin is smaller than the corresponding distances for indium and thallium, the contraction in the ‘ a ’-spacing of magnesium - tin alloys is markedly less than in the indium and thallium alloys. Lead expands the lattice of magnesium. The ‘ a ’-spacing-composition curves for the systems studied are smooth and continuous. In contrast, the ‘ c ’-spacing curves show a change in direction at an electron concentration of approximately 2·0075, that is, at 0·75 atomic per cent of a three-valent solute and 0·375 of a four-valent solute. It is at this point that an overlap of electrons from the first Brillouin Zone for the magnesium structure occurs in the ‘ c ’ direction, in addition to the already existing overlap in the ‘ a ’ direction. For solutes of favourable 'size factor’ the variation in axial ratio with composition, after the onset of the second overlap, is proportional to the electron concentration, and is therefore twice as great per atomic per cent for a four-valent solute as for a three-valent solute. The apparent atomic diameters of the above elements in dilute solid solution in magnesium, as deduced by extrapolation of the lattice spacing-composition curves to 100 % of solute, are in agreement with the requirements of the Brillouin Zone theories of metals. The results confirm the suggestion that indium, thallium, white tin and lead are incompletely ionized in the elementary state.

About the Possibility of Increase in CGI Properties by Austempering

2018 ◽  
Vol 284 ◽  
pp. 224-228
Author(s):  
A.G. Panov ◽  
D.A. Gurtovoy ◽  
I.F. Shaekhova
Keyword(s):  
Heat Treatment ◽  
Strength Characteristics ◽  
Damping Capacity ◽  
Structure And Properties ◽  
First Results

The first results of the complex researches by NChI KFU, KAMAZ and RC Modificator of influence of heat treatment on CGI structure and properties are presented in the article. It is shown that austempering of CGI raises its strength characteristics more than twice and, thanks to good foundry properties, exclusively highs the resistance of deformation, good damping capacity and machinability, allows to expand CGI applications, in particular, instead of the alloyed SGI, including ADI.

Wear In Lubricated Journal Bearings

1978 ◽  
Vol 100 (1) ◽  
pp. 104-109 ◽  
Author(s):  
A. Begelinger ◽  
A. W. J. de Gee
Keyword(s):  
Journal Bearings ◽  
Polishing Process ◽  
Tin Alloys ◽  
Carburized Steel ◽  
Aluminium Copper ◽  
Lead Zinc ◽  
Steel Aisi ◽  
Copper Aluminum ◽  
Nonferrous Alloys ◽  
Copper Lead

If the combination of bearing material, lubricant, and journal material is well chosen, wear in lubricated journal bearings has a mildly abrasive character, the asperities of the journal surface slowly grinding away material of the inner surface of the bearing. It is shown that this process can be simulated adequately on a pin-and-ring apparatus. Experiments performed on such equipment show that the specific wear rate of bronzes, white metals, aluminum-tin alloys, copper-lead, zinc-aluminum and copper-aluminum increases linearly with increasing surface roughness of the mating component, i.e. a journal made from carburized steel AISI 5120 with a Vickers hardness of 680 · 107 N/m2. It is also shown that, when in contact under conditions of boundary lubrication with copper-tin, copper-aluminium, copper-lead, lead babbitt or tin babbitt the roughness asperities of the hard steel journal gradually disappear by a polishing process. This effect does not occur if the steel journal is in contact with either aluminium-tin or zinc-aluminium. The effect is tentatively explained in terms of an electrochemical interaction between the nonferrous alloys and the steel.

Sign in / Sign up

Export Citation Format

Share Document