The effects of precipitation hardening on the stram rate sensitlvlty of the flow stress and the yield behaviour in an Al-Mg-Si allo) have been investigated. In samples aged for less than 4 h at 160 C measurements of Au Alti were found to decrease with increasing strain. becommg negative at a strain
The effect of strain rate on flow stress, strength and ductility of an Al-Li-Mg alloy
β Scribed by T. S. Srivatsan; T. Hoff; S. Sriram; Amit Prakash
- Publisher
- Springer
- Year
- 1990
- Tongue
- English
- Weight
- 336 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0261-8028
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Still unresolved is the question regarding the mechanism which controls the velocity of free dislocations in b.c.c. metals and is thus responsible for the strong temperature dependence of the yield and flow stress. Three mechanisms have been proposed : 1. Overcoming the Peierls-Nabarro force.(31435)