Author: Westinghouse Electric Corporation. Westinghouse Lamp Division
Publisher:
ISBN:
Category : Tungsten
Languages : en
Pages : 524

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Author: Heinz Sell (G.)
Publisher:
ISBN:
Category : Physical metallurgy
Languages : en
Pages : 116

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Author: R. H. Atkinson
Publisher:
ISBN:
Category : Tungsten
Languages : en
Pages : 233

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 109

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Tensile properties of high purity powder metallurgy tungsten and W-1% ThO2 alloy were determined at various strain rates and temperatures (800-2400 C). 1% ThO2 imparts a slight overall increase in strength properties, although above 0.5 T sub m these properties are affected by void formation. The tensile properties of pure W and W-O.35% Ta single crystals (worked, and worked and recrystallized) investigated from R.T. to 1200C are shown to be affected by C, particularly in the quenched condition. An alloy screening program was conducted with W-25% Re, and 1% ThO2 and 1% HfN additions, and with single crystals of W-3.5% Ta-C. The W-Re alloys have superior strength up to 2400C. A yield stress of 47 kpsi was found at 1600C in the quenched W-3.5% Ta-C single crystal. Reactions between ThO2 and W, C, and several carbides were investigated as was the reaction W+TaC. A phase diagram of the W-Ta-C system resulted.

Author: Westinghouse Electric Corporation. Lamp Divisions
Publisher:
ISBN:
Category :
Languages : en
Pages : 143

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Author: Heinz Sell
Publisher:
ISBN:
Category : Physical metallurgy
Languages : en
Pages : 103

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Author: HEINZ G. SELL
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ISBN:
Category :
Languages : en
Pages : 1

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UFACTURING METHODS, Microstructure, Lattices, Impurities.) Fundamental properties of high purity w produced both by powder metallurgy techniques and, as single crystals, by electron beam zone melting were studied. High temperature properties of several dispersed second-phase w base alloys were also investigated. Base line data on the metallurgical properties of pure w for temperatures above 2500 F were obtained. The mechanism of purification in w during zone melting was studied. The flow and fracture characteristics of w single crystal were investigated as functions of annealing temperature and atmosphere. Internal friction measurements were carried out at 20 to 800 C on high purity and dosed polycrystalline w wires and w single crystals. (Author).

Author: F. F. Schmidt
Publisher:
ISBN:
Category : Tungsten
Languages : en
Pages : 154

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The results of a state-of-the-art survey covering tungsten and ten of its alloys are presented. All data are given in tabular and graphical form covering some of the more important physical, mechanical, and metallurgical properties for each material. References are given at the conclusion of each material section.

Author: Union Carbide Metals Company. Metals Research Laboratories
Publisher:
ISBN:
Category : Tungsten
Languages : en
Pages : 110

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Author:
Publisher:
ISBN:
Category : Tungsten
Languages : en
Pages : 62

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