| Autor: |
Kruglov, V. N., Gurevich, B. D., Groshev, V. I., Nezhevenko, L. B., Pritchin, S. A. |
| Zdroj: |
Powder Metallurgy and Metal Ceramics; January 1979, Vol. 18 Issue: 1 p47-51, 5p |
| Abstrakt: |
1.It is demonstrated that in the surface layers of ZrC0.91 specimens produced by extrusion and sintering there are local residual stresses whose magnitude grows from 13 to 38 kgf/mm2 when the grain size is increased from 8 to 60µ.2.It has been confirmed by experiment that increasing the grain size from 8 to 60µ decreases the strength of specimens from 46 to 18 kgf/mm2.3.A new expression,s=K(1/L-10)1/2, where L0 is a critical grain size determined by the scale factor and the stressed state of the specimen, is proposed for the grain size dependence of strength. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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