| Autor: |
Konoplenko, V., Artyukhina, L., Tubyshkin, Yu., Shulepov, V., Musienko, V. |
| Zdroj: |
Soviet Powder Metallurgy & Metal Ceramics; 1980, Vol. 19 Issue 1, p57-60, 4p |
| Abstrakt: |
At room temperature the strength of ZhS6 nickel alloy produced by the granule metallurgy method is 1.5 times higher and its plasticity 3-4 times higher than those of the same alloy produced by the standard casting process. The P/M alloy remains superior in strength to the cast alloy up to temperatures of the order of 750-800°C, above which the strength characteristics of the P/M alloy fall below the level of properties of the cast material. The deformation of the P/M alloy varies in character depending on testing temperature, and three types of specimen fracture are possible: brittle fracture without waist formation in the temperature range 20-700°C, fracture with waist formation at 700-1000°C, and plastic deformation along the whole specimen length above 1000°C. At temperatures of 1000-1150°C the P/M alloy exhibits superplasticity: At low rates of deformation its elongation attains several hundred percent when the load is about 0.1σ. The elongation of the specimen, load applied, and type of stress-strain diagram depend to a large extent on the rate of deformation: As the latter is decreased, δ sharply grows and the load diminishes. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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