Zobrazeno 1 - 10
of 12
pro vyhledávání: '"H. L. Downing"'
Autor:
H. L. Downing, John D. Verhoeven, L.S. Chumbley, L. G. Fritzemeier, L. L. Jones, W. A. Spitzig, C. L. Trybus, G. D. Schnittgrund, E. D. Gibson
Publikováno v:
Journal of Materials Engineering and Performance. 22:2847-2859
The strength, electrical conductivity, and substructure of deformation processed Cu-15vol%X alloys have been studied where X included Nb, Ta, and Cr. One alloy of Cu-15Nb was studied in which 2% Ag was added to examine solid solution strengthening of
Publikováno v:
Metallurgical Transactions A. 24:21-26
Wires have been fabricated by deformation processing of precursor billets that were prepared from alloy powders made by high-pressure gas atomization (HPGA) of a copper-20 vol pct niobium melt. The powders were classified, and a larger size fraction,
Publikováno v:
Metallurgical Transactions A. 24:7-14
A Cu-5 pct Nb alloy was deformation processed by wire drawing to very large reductions (99.9993 pct) and the strength and electrical conductivity properties compared with similarly deformation processed Cu-20 pct Nb. The results showed that the Cu-5
Publikováno v:
Materials and Manufacturing Processes. 7:1-13
It has been shown that deformation processed Cu-19% Nb alloys with good strength and electrical conductivity can be developed in sizes that are useful for engineering applications. Mot extrusion of bundled sub-elemental Cu-19% Nb wires followed by co
Effect of temperature on the strength and conductivity of a deformation processed Cu-20%Fe composite
Publikováno v:
Journal of Materials Science. 27:2005-2011
The high temperature (22–600 °C) properties were evaluated for a Cu-20%Fe composite deformation processed from a powder metallurgy compact. The ultimate tensile strengths decreased with increasing temperature but were appreciably better than those
Autor:
L. L. Jones, G. D. Schnittgrund, W. A. Spitzig, L. G. Fritzemeier, E. D. Gibson, John D. Verhoeven, C. L. Trybus, L.S. Chumbley, H. L. Downing
Publikováno v:
Journal of Materials Engineering. 12:127-139
The strength, electrical conductivity, and substructure of deformation processed Cu-15vol%X alloys have been studied where X included Nb, Ta, and Cr. One alloy of Cu-15Nb was studied in which 2% Ag was added to examine solid solution strengthening of
Publikováno v:
Journal of Applied Physics. 61:2621-2625
Cu‐Nb in‐situ alloys possess high strenght plus thermal conductivity properties and are therefore of interest in heat transfer applications. Etching the surfaces of these alloys to preferentially remove Cu places the Nb filaments in relief. Exper
Autor:
H. L. Downing, R. J. Friauf
Publikováno v:
Physical Review B. 12:5981-5989
Autor:
H. L. Downing, J. D. Verhoeven
Publikováno v:
Journal of Heat Treating. 6:21-26
An x-ray technique was employed to evaluate an average amount of texture in a series of Fe-C alloys with percentages of carbon varying from 0.1 to 1 wt%. The texture was removed by two types of cyclic heat treatments: normalizing or quenching and ann
Publikováno v:
Journal of Heat Treating. 4:253-264
It is shown that if one measures the coil current, Ic, during induction case hardening of steel a distinct break in the slope of the Ic vs. time curve is found. Experimental and theoretical results are presented which show that the break occurs at th