Hot deformation behavior of Al–Mg–Li-Sc-Zr alloy processed by rapid solidification
Source abstract
Abstract
The hot deformation behavior of a rapidly solidified Al-Mg-Li-Sc-Zr alloy was investigated using hot compression tests. The results demonstrated that flow stress curves obtained at lower temperatures (380-460 °C) and higher strain rates (0.1-1 s -1 ) exhibited characteristics of dynamic recrystallization. The constitutive equation derived from the dynamic materials model reliably described the hot deformation behavior of the alloy, with an activation energy of 155.15 kJ·mol -1 calculated for the process. Based on the processing maps, an optimum processing area was identified as 380-500 °C and 0.001-0.01 s -1 . Microstructural observation confirmed that dynamic recrystallization was the principal softening mechanism. A uniform grain size distribution was obtained at temperatures above 380 °C. The Al 3 (Sc, Zr) phase significantly inhibited dynamic recrystallization and grain growth while increasing the activation energy of the alloy.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · Microstructure and mechanical properties · Magnesium Alloys: Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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