Fabrication and mechanical properties of MWCNTs-reinforced aluminum composites by hot extrusion

作     者：Mortazavi Majid Majzoobi G.H. Golikand A.Noozad Reihani A. Mortazavi S.Z. Gorji M.S. 

作者机构：Department of Mechanical EngineeringFaculty of EngineeringBu-Ali Sina UniversityHamedanIran Department of Materials EngineeringMonash UniversityClaytonVictoria 3800Australia Material Research SchoolTehran P.O.Box 31485-498Iran School of Materials EngineeringNajafabad BranchIslamic Azad UniversityIsfahanIran School of Materials and Mineral Resources EngineeringUniversiti Sains MalaysiaPenangMalaysia 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2012年第31卷第4期

页      面：372-378页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

主　　题：aluminum matrix composite multi-wall carbon nanotubes(MWCNTs) ball milling mechanical properties 

摘      要：Over the past decade,the interest in aluminum composites reinforced with carbon nanotubes has grown *** have been carried out to overcome problems with uniform dispersion,interfacial bonding,void formation and carbide formation of the *** the present work,multi-wall carbon nanotubes(MWCNTs) aluminum composites were ***-energy ball milling with the aim at developing well-dispersed MWCNTs Al composites was followed by cold compaction,sintering,and hot extrusion at 500 ℃.Different amounts of stearic acid as processing control agent(PCA) is used in order to minimize cold welding of the Al particles,and to produce finer *** scanning calorimetry(DSC),scanning electron microscopy(SEM),transmission electron microscopy(TEM),and X-ray diffraction(XRD) were employed to analyze the MWCNTs,the aluminum powder,and the composites’ microstructural *** hardness and tensile properties of the composites are also *** results showed 500% increase in yield stress after the addition of 1 wt% MWCNTs in Al-MWCNTs based *** ball-milling time of 4 h is found to be sufficient as excessive milling time destroys a vast number of MWCNTs.