Conclusions
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1.
A study was made of the ductility of semifinished products in 6–15% alumina SAP materials at temperatures of 20–550°C. The elongation of SAP was found to vary anomalously as a function of temperature. It was established that the elongation anomalies are not linked with the initial condition of the material (type of semifinished product) and loading conditions.
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2.
In the light of the information obtained, it is impossible to conclude that the level of ductility of the material is determined by the character of the interaction between the oxide and aluminum particles during deformation. Generally, the character of this interaction depends on the level of stress in the matrix, and controls the character of stress distribution in the blank.
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3.
The necessary level of stress in the working of SAP material can be reached by lowering the initial hot-working temperature to 350–400°C or increasing the rate of deformation, the former being preferable in the production of large-sized blanks under industrial conditions.
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The work was carried out under the supervision of Professor I. N. Fridlyander.
Translated from Poroshkovaya Metallurgiya, No. 5 (149), pp. 26–29, May, 1975.
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Kursikov, Y.N., Sitnikova, M.A., Fedorova, A.V. et al. Variation of the ductility of SAP material over the temperature range 20–550°C. Powder Metall Met Ceram 14, 367–369 (1975). https://doi.org/10.1007/BF00807805
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DOI: https://doi.org/10.1007/BF00807805