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Title: Short-range ordering and mechanical properties of a Ni-20%Cr alloy
Authors: Dudova, N. R.
Kaibyshev, R. O.
Keywords: technique
metal technology
mechanical properties
coarse-grained alloy
nickel-base alloys
nichrome alloys
creep resistance
Issue Date: 2010
Citation: Dudova N.R. Short-range ordering and mechanical properties of a Ni-20%Cr alloy / N.R. Dudova, R.O. Kaibyshev ; Belgorod State University // Journal of physics: conference series. - 2010. - Vol.240.-Art. 012081.
Abstract: The mechanical behavior of a coarse-grained (100 mm) nickel-base alloy nichrome (Ni-20%Cr) was studied in compression at temperatures ranging from 150 to 1000°C. It was shown that in the temperature interval of 300-600°C this alloy demonstrates the following features of mechanical behavior: i) positive temperature dependence of yield stress; ii) jerky flow associated with the Portevin-Le Chatelier (PLC) effect ; 3) very high value (115 MPa) of “threshold” stress at 650°C. These features of mechanical behavior can be related to short- range ordering (SRO). It was shown by differential scanning calorimetry that SRO takes place in this temperature range, causing PLC effect and positive temperature dependence of yield stress. In addition, SRO has persistency effect on yield stress and creep resistance
Appears in Collections:Статьи из периодических изданий и сборников (на иностранных языках) = Articles from periodicals and collections (in foreign languages)

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