Hall-Petch Relationship: Use in Characterizing Properties of Aluminum and Aluminum Alloys*
نویسنده
چکیده
The mechanical properties of aluminum are shown to be of special importance beginning from the early 20th century production of the material in single crystal and polycrystalline form. Experimental and theoretical researches of the time were concerned with particular influence of polycrystalline microstructure and the presence of crystal (grain) boundaries on both the material strength properties and on relation of those same properties to those for the full range of metal and alloy structures. Now it is well-established that a relatively low value of the microstructural stress intensity, kε, obtains for aluminum in the generalized Hall-Petch relation for the stress strain, σε ε, dependence on average grain diameter, l, with intercept (friction) stress, σ0ε, as
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تاریخ انتشار 2016