Hot Compression Behavior and Workability of Mg-5Gd-3Y-2Zn-0.5Zr Alloy with Long-Period Stacking Ordered Phases
Source abstract
Abstract
The compression behavior and workability of the Mg-5Gd-3Y-2Zn-0.5Zr (designated as 2#) alloy with long-period stacking ordered (LPSO) phases were investigated and compared with those of the Mg-5Gd-3Y-1Zn-0.5Zr (designated as 1#) one. The results reveal that the increased volume fraction of interdendritic LPSO phases and the formation of thermostable intragranular lamellar LPSO phases can be induced by the increase in Zn content. The lamellar LPSO phases appear after homogenization and keep undissolved during compression, which strongly inhibit the dynamic recrystallization. The 2# alloy exhibits the deteriorated workability which is embodied in the larger deformation activation energy (Q, ~ 336 kJ/mol), lower DRX ratios, broader improper processing domains, and higher frequency of macrocracks. Moreover, the increased Zn content leads to the higher grain size exponent (m, ~ 5.4) due to the combined effects of increased interdendritic and intragranular LPSO phases for the 2# alloy. This work aims to provide useful information for the industrial production of Mg alloys which contain LPSO phases.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Aluminum Alloys Composites Properties · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (44)
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