Deformation behavior and phase transformation of a dual-phase Mg−8.9Li−2.7Al-0.85Si alloy under compression test at elevated temperatures

Liu, Junwei; Li, Chenhui; Lu, Huiyang; He, Yu; Wang, Ying; Wei, Guobing

doi:10.1016/j.jallcom.2022.167034

Cited by 5 publications

(1 citation statement)

References 33 publications

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“…The formation of sub-structures is related to dislocation interaction [ 38 ]. Our previous study [ 34 ] showed that in the as-extruded AXMZ5210 alloy, a large number of dislocations accumulated inside the grains due to the presence of nanoscale Al-Mn phase in the matrix, which may be related to the existence of more sub-structured grains in the extruded alloy [ 39 , 40 ]. In the subsequent RS, the further accumulation of dislocations due to the higher strain may force the sub-structure to transform to high-angle grain boundaries (HAGBs), thus refining the grain size [ 17 , 40 ].…”

Section: Resultsmentioning

confidence: 99%

Improving the Mechanical Properties of Mg-5Al-2Ca-1Mn-0.5Zn Alloy through Rotary Swaging

Chen

et al. 2023

Materials

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To meet the demand for more extensive applications of Mg alloys, a Mg-5Al-2Ca-1Mn-0.5Zn alloy without RE was prepared in this paper, and its mechanical properties were further improved by conventional hot extrusion and subsequent rotary swaging. The results show that the hardness of the alloy decreases along the radial central region after rotary swaging. The strength and hardness of the central area are lower, but the ductility is higher. The yield strength and ultimate tensile strength of the alloy in the peripheral area after rotary swaging reach 352 MPa and 386 MPa, respectively, while the elongation remains at 9.6%, exhibiting better strength–ductility synergy. The grain refinement and dislocation increase caused by rotary swaging promoted strength improvement. The activation of non-basal slips during rotary swaging is an important reason for the alloy to maintain good plasticity while improving strength.

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