Effect of heat treatment on the properties of sintered nickel-molybdenum and nickel-chromium-molybdenum alloys

1. Tempering at 750–800°C severely embrittles the sintered Ni-30% Mo alloy and reduces its corrosion resistance. By employing the method of electrical resistivity measurement, it is possible rapidly to assess the structural state of the alloy and the extent of its losses of corrosion resistance and...

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Bibliographic Details
Published in:Powder metallurgy and metal ceramics, Vol. 10, No. 12 (1971), p. 974-977
Main Author: Solonin, M.
Other Involved Persons: Chernyshev, I. ; Fedorchenko, M.
Format: electronic Article
Language:English
ISSN:1573-9066
Item Description:Translated from Poroshkovaya Metallurgiya, No. 12 (108), pp. 44–48, December, 1971.
Physical Description:Online-Ressource
DOI:10.1007/BF00797360
Subjects:
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520 |a 1. Tempering at 750–800°C severely embrittles the sintered Ni-30% Mo alloy and reduces its corrosion resistance. By employing the method of electrical resistivity measurement, it is possible rapidly to assess the structural state of the alloy and the extent of its losses of corrosion resistance and ductility. To ensure high properties in sintered parts made of the Ni-30% Mo alloy, cooling must be performed rapidly in the range from the sintering temperature to 500°C.2. The deterioration in properties after tempering is less marked for the sintered Ni-15% Cr-15% Mo alloy than for the corresponding cast alloy of commercial purity. The reason for this appears to bethat, because of its lower impurity content, the sintered alloy is less susceptible to σ phase precipitation. 
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