Enhanced ductility of Mg–3Al–1Zn alloy reinforced with short length multiwalled carbon nanotubes using a powder metallurgy method  

作　　者：Muhammad Rashad Fusheng Pan Muhammad Asif Li Li 

机构地区：[1]College of Materials Science and Engineering, Chongqing University [2]National Engineering Research Center for Magnesium Alloys, Chongqing University [3]Chongqing Academy of Science and Technology [4]School of Materials Science and Engineering, Dalian University of Technology

出　　处：《Progress in Natural Science:Materials International》2015年第4期276-281,共6页自然科学进展·国际材料（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 50725413);the Ministry of Science and Technology of China (MOST) (Nos. 2010DFR50010 and 2011FU125Z07);Chongqing Science and Technology Commission (CSTC2013JCYJC60001)

摘　　要：Mg–3Al–1Zn–CNTs composites, with different weight fractions(0.25–1.0 wt%) of carbon nanotubes(CNTs) were successfully fabricated via a powder metallurgy method. The processing parameters were adopted in such a way to have uniform dispersion of short length CNTs without any damage, as well as re fi ned and dissolved β phases structures throughout the composite matrix. The composite exhibited impressive increase in microhardness(about+23%) and tensile failure strain value(about+98%) without signi fi cant compromise in tensile strength, compared to the un-reinforced Mg–3Al–1Zn alloy. The synthesized composites can be used in automotive and aerospace industries due to their low density and high speci fic strength.Mg–3Al–1Zn–CNTs composites, with different weight fractions(0.25–1.0 wt%) of carbon nanotubes(CNTs) were successfully fabricated via a powder metallurgy method. The processing parameters were adopted in such a way to have uniform dispersion of short length CNTs without any damage, as well as re fi ned and dissolved β phases structures throughout the composite matrix. The composite exhibited impressive increase in microhardness(about+23%) and tensile failure strain value(about+98%) without signi fi cant compromise in tensile strength, compared to the un-reinforced Mg–3Al–1Zn alloy. The synthesized composites can be used in automotive and aerospace industries due to their low density and high speci fic strength.

关 键 词：Metal matrix composites Mechanical properties Powd 

分 类 号：TF125[冶金工程—粉末冶金] TB33[冶金工程—冶金物理化学]