Coarsening of the δ' phase in aluminium-lithium alloys
作者： B. Noble , S. E. Bray
DOI: 10.1080/01418619908210336
关键词: Lithium 、 Thermal diffusivity 、 Thermodynamics 、 Alloy 、 Materials science 、 Precipitation hardening 、 Phase (matter) 、 Activation energy 、 Metallurgy 、 Aluminium 、 Electrical resistivity and conductivity
摘要: Abstract Transmission electron microscopy has been used to measure the size of δ′ phase, and electrical resistivity determine lithium concentration in matrix, during coarsening phase. Application Lifshitz-Slyozov-Wagner theory particle enabled independent calculation δ′-α interface energy γ effective diffusivity D eff aluminium coarsening. For an alloy containing 7.6 at.% Li, is found be 0.045 J m−2 at a temperature T defined by equation Increasing 9.8 had little effect on activation but it reduced value pre-exponential factor.
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