Mechanical Equation of State in an Al-Li Alloy
نویسنده
چکیده
Existence of plastic equation of state has been investigated by performing a series of load relaxation tests at various temperatures using an Al-Li alloy. A plastic equation of state is first developed from a simple kinetics consideration for a mechanical activation process of a leading dislocation piled up against grain boundaries. A series of load relaxation test has been conducted at temperatures ranging from 200 to 530C to obtain the stress-strain rate curves. A plastic equation of state has been derived from a simple consideration of dislocation kinetics and confirmed by experimental results. Keywords—Plastic equation of state, Dislocation kinetics, Load relaxation test, Al-Li alloy, Microstructure.
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