2019
DOI: 10.1016/j.jmrt.2019.08.048
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Influence of extrusion temperature on dynamic deformation behaviors and mechanical properties of Mg-8Al-0.5Zn-0.2Mn-0.3Ca-0.2Y alloy

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Cited by 49 publications
(3 citation statements)
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“…The Hall–Petch relationship of increasing hardness with finer grain size has been observed [ 46 ]. In addition, a comparison can be drawn with the previously-mentioned prior study on Mg-2SiO 2 ; the grain sizes of the pure Mg and Mg-2SiO 2 TID materials in the present study are smaller than those generated without TID but with extrusion despite the grain refinement from dynamic recrystallisation [ 29 , 31 , 47 , 48 ] present in the former study.…”
Section: Discussionsupporting
confidence: 54%
“…The Hall–Petch relationship of increasing hardness with finer grain size has been observed [ 46 ]. In addition, a comparison can be drawn with the previously-mentioned prior study on Mg-2SiO 2 ; the grain sizes of the pure Mg and Mg-2SiO 2 TID materials in the present study are smaller than those generated without TID but with extrusion despite the grain refinement from dynamic recrystallisation [ 29 , 31 , 47 , 48 ] present in the former study.…”
Section: Discussionsupporting
confidence: 54%
“…Furthermore, with regards to grain size, the hot extrusion performed on the Mg materials also allows for dynamic recrystallization to occur, resulting in finer (smaller) average grain sizes [35][36][37]. Previous TID method studies on Mg materials (alloys and nanocomposites) have further reduced the grain sizes compared to conventionally-processed Mg materials undergoing the same hot extrusion process, as in Table 6 below: Comparing the findings in Figure 4 and Tables 4-6 above, the smaller grains contribute to multiple desirable outcomes such as grain hardening [38] and higher hardness.…”
Section: Tid Effect On Grain Sizementioning
confidence: 99%
“…In addition, there are still some large-sized β phases in the low revolution samples (highlighted by red dotted circles in Figure 4 b,f), but as the number of rotating revolutions increases, these remaining coarse phases also gradually break into small-sized phases ( Figure 4 g–i). In addition, it should be noted that the β phases are mostly distributed along the DRXed grain boundaries rather than inside the grain, which can effectively inhibit the grain growth, that is, creating the pinning effect [ 24 ]. Therefore, in the RBE deformation, increasing the number of revolutions can reduce the size of the second phase, thereby reducing the size of the DRXed grains, and ultimately achieving the effect of grain refinement.…”
Section: Resultsmentioning
confidence: 99%