The synergistic effect of low Gd+Mn additions on the evolution of microstructure and mechanical properties of Mg−xGd−0.8Mn alloy was investigated.Gd addition shows a strong grain refinement effect on the extruded Mg−x...The synergistic effect of low Gd+Mn additions on the evolution of microstructure and mechanical properties of Mg−xGd−0.8Mn alloy was investigated.Gd addition shows a strong grain refinement effect on the extruded Mg−xGd−0.8Mn alloy,and leads to a continuous decrease in the area fraction of basal texture grains and the corresponding maximum density of texture components.However,the maximum density of the basal texture components grows abruptly as Gd content increases to 6 wt.%.When the Gd content is below 6 wt.%,the asymmetry of the tensile and compressive yield of the alloy is negatively correlated to the Gd content due to grain refinement and texture weakening effects.Besides,the contribution of grain refinement to higher alloy yield strength is more significant than that of grain orientation.Compared with the extruded Mg−xGd alloy,the extruded Mg−xGd−0.8Mn alloy shows a lower limit composition point that corresponds to solid solution strengthening and plasticizing effect(2 wt.%and 4 wt.%).Finally,the trend of basal slip and prismatic slip resistance variations of the extruded Mg−xGd−0.8Mn alloys was predicted.展开更多
The syntheses of Gd(OH)_(3)and Gd(OH)_(3)-based nanomaterials have been reported and these materials have been developed as excellent MRI contrast agents.Due to the close interrelation between their morphology and pro...The syntheses of Gd(OH)_(3)and Gd(OH)_(3)-based nanomaterials have been reported and these materials have been developed as excellent MRI contrast agents.Due to the close interrelation between their morphology and properties,it has resulted in the development of various particle sizes and shapes of Gd(OH)_(3)and Gd(OH)_(3)-based nanomaterials.This has led to the extension of the uses of the materials to photocatalysis,drug delivery,and CT image contrast agents.Accordingly,these applications have been compiled and discussed in depth in this review.The potential of these materials in the above applications has started to attract significant attention.Moreover,the compilation of in-vitro toxicity studies from the literature was also discussed to facilitate the biocompatibility of the developed Gd(OH)_(3)nanomaterials.However,despite the rapid progress of Gd(OH)_(3)and Gd(OH)_(3)-based nanomaterials,there are still knowledge gaps in certain areas.Therefore,this review provides insights into the recent development of Gd(OH)_(3)and Gd(OH)_(3)-based nanomaterials to aid in accelerating novel developments.展开更多
基金National Natural Science Foundation of China(No.U2241231)National Key Research and Development Program of China(No.2021YFB3701100)+1 种基金Scientific Research Project of Jiangxi Provincial Department of Education,China(No.GJJ211038)Doctoral Research Project of Jinggangshan University,China(No.JZB2110)。
文摘The synergistic effect of low Gd+Mn additions on the evolution of microstructure and mechanical properties of Mg−xGd−0.8Mn alloy was investigated.Gd addition shows a strong grain refinement effect on the extruded Mg−xGd−0.8Mn alloy,and leads to a continuous decrease in the area fraction of basal texture grains and the corresponding maximum density of texture components.However,the maximum density of the basal texture components grows abruptly as Gd content increases to 6 wt.%.When the Gd content is below 6 wt.%,the asymmetry of the tensile and compressive yield of the alloy is negatively correlated to the Gd content due to grain refinement and texture weakening effects.Besides,the contribution of grain refinement to higher alloy yield strength is more significant than that of grain orientation.Compared with the extruded Mg−xGd alloy,the extruded Mg−xGd−0.8Mn alloy shows a lower limit composition point that corresponds to solid solution strengthening and plasticizing effect(2 wt.%and 4 wt.%).Finally,the trend of basal slip and prismatic slip resistance variations of the extruded Mg−xGd−0.8Mn alloys was predicted.
基金the FRC grant(UBD/RSCH/1.4/FICBF(b)/2023/059)received from Universiti Brunei Darussalam,Brunei Darussalam。
文摘The syntheses of Gd(OH)_(3)and Gd(OH)_(3)-based nanomaterials have been reported and these materials have been developed as excellent MRI contrast agents.Due to the close interrelation between their morphology and properties,it has resulted in the development of various particle sizes and shapes of Gd(OH)_(3)and Gd(OH)_(3)-based nanomaterials.This has led to the extension of the uses of the materials to photocatalysis,drug delivery,and CT image contrast agents.Accordingly,these applications have been compiled and discussed in depth in this review.The potential of these materials in the above applications has started to attract significant attention.Moreover,the compilation of in-vitro toxicity studies from the literature was also discussed to facilitate the biocompatibility of the developed Gd(OH)_(3)nanomaterials.However,despite the rapid progress of Gd(OH)_(3)and Gd(OH)_(3)-based nanomaterials,there are still knowledge gaps in certain areas.Therefore,this review provides insights into the recent development of Gd(OH)_(3)and Gd(OH)_(3)-based nanomaterials to aid in accelerating novel developments.
