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Muhammad Rashad,Fusheng Pan,Aitao Tang,Muhammad Asif,Shahid Hussain,Jun Gou,Jianjun Mao 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.23 No.-
The Mg–Al–graphene nanoplatelets (GNPs) nano-composites were synthesized using the powder metallurgy method. The effect of Al–GNPs hybrids addition in to pure Mg was examined through tensile and Vicker hardness tests. The GNPs content was kept constant (0.18 wt.%) and Al content was varied from 0.5 wt.% to 1.5 wt.%. The increase in Al content led to increase in 0.2%YS, UTS and failure strain (%). However for Al content exceeding over 1 wt.%, the failure strain(%) started to decrease. The best improvement was achieved with 1 wt.% Al (Mg–1.0Al–0.18GNPs). Mechanical strength of synthesized composites proved to be better than Mg–Al–CNTs and Mg–ceramic composites.
Powder metallurgy of Mg–1%Al–1%Sn alloy reinforced with low content of graphene nanoplatelets (GNPs)
Muhammad Rashad,Fusheng Pan,Muhammad Asif,Aitao Tang 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.6
The Mg–1%Al–1%Sn–0.18% graphene nanoplatelets (GNPs) composite is fabricated by semi powdermetallurgy method followed by hot extrusion. Microscopic observation revealed the uniformdistribution of GNPs in the matrix. The addition of 0.18 wt% GNPs to Mg–1wt%Al–1wt%Sn alloy leadto increase in tensile strength (i.e., from 236 to 269 MPa). The increase in strength of the composite couldbe due to high specific surface area, superior nano-filler adhesion and two-dimensional structure ofGNPs.
Influence of Li Addition on the Microstructures and Mechanical Properties of Mg–Li Alloys
Jun Zhao,Jie Fu,Bin Jiang,Aitao Tang,Haoran Sheng,Tianhao Yang,Guangsheng Huang,Dingfei Zhang,Fusheng Pan 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.6
In this study, Mg-xLi (x = 0, 1, 2, 3 and 5 wt%) alloys have been extruded to examine the role of Li content on microstructuresand tensile properties. The results revealed that Li addition increased the grain size and led to the formation of the transversedirection (TD)-split texture. These were mainly attributed to the promoted DRX process and the increased activity of prismatic⟨a⟩ slip during extrusion. Tensile tests revealed that the elongation of Mg-5Li sheet reached ~ 22.4% along the ED. Moreover, it exhibited a higher elongation of ~ 27.3%, three times than pure Mg, along the TD. During tension along the ED,with increasing Li content, more prismatic ⟨a⟩ slip and preferable intergranular strain coordination ability to accommodatethe plastic strain, leading to the enhanced room-temperature ductility. In contrast, more basal ⟨a⟩ slips and extension twinswere also activated along the TD, which further contributed to the enhanced ductility. Therefore, the ductility of Mg sheetsat room temperature gradually improved with Li addition due to the combining effects of basal ⟨a⟩ slip, prismatic ⟨a⟩ slip,extension twin and preferable intergranular strain coordination ability.
Deformation Behavior of the Mg–Zn–Ca–Ce Alloy Sheets Subjected to Uniaxial and Biaxial Tensile Tests
Guangang Wang,Guangsheng Huang,Ke Liu,Junlei Zhang,Bin Jiang,Aitao Tang,Fusheng Pan 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.11
The uniaxial tensile test and Erichsen test are performed on the different deformation behavior under different stress states. The materials used in this paper had obvious anisotropy in the rolling plane because of the bimodal textures along the transversedirection. However, the Mg alloy with the weakest texture distribution did not get the better plasticity and formability,which was related to the enhanced grain boundary cohesion by more Zn addition. The rate of dislocations storage was independentof load direction for a given Mg alloy, even if Mg alloy has large in-plane anisotropy at lower stress levels. Therewas something different from the work hardening behavior in stage III between the ZXE0500 alloy and ZXE1500 alloy inthree load directions because of the dynamic recovery. Tension twin is easier to be activated on ZXE1500 alloy rather thanZXE0500 alloy. Because the crack edge of samples used for the Erichsen test went through non-equal biaxial tensile stress,and the strain in the radial direction was much larger than that of the circumferential direction, so the texture evolution wassimilar to the uniaxial tensile stress.