Effect of Heat Treatment on Microstructure and Mechanical Properties of AZ91 and AZ91 Reinforced Carbon Nanotube

[摘要] In present work the effect of heat treatment on microstructure and mechanical properties of AZ91 and AZ91 reinforced with carbon nanotube (CNT) were tested after undergoes Sintering,T1 at 450 °C, Solution Treatment,T4 at 415°C and Ageing Treatment,T6 at 715°C. Then, all samples will be analyze their microstructure morphology, phase composition, hardness and compression strength by using Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Rockwell Hardness machine and Universal Tensile Machine (UTM). CNT were clustered homogeneously into the matrix of AZ91 due to successfully mechanical alloying using planetary mill for 20 hours. Precipitation of β-Phase (Mg17Al12) were reveal in XRD pattern usually highest intensity at 20=3O°until 40°. Meanwhile, the ageing treatment,T6 nanocomposites found increase in hardness, compare to monolithic has lower value started form 4 hours until 8 hours of ageing.

[发布机构] School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), Kompleks Pusat Pengajian, Jejawi 2, Taman Muhibbah, Jejawi, Perlis, Arau; 02600, Malaysia^1

[效力级别] 工业技术 [学科分类] 工业工程学

[关键词] Ageing treatments;Compression strength;Effect of heat treatments;Microstructure and mechanical properties;Microstructure morphologies;Rockwell hardness machines;Solution treatments;Tensile machines