Effects of Zr on the Microstructure and Mechanical Properties of 6061 Alloys

Yu Chih Tzeng

doi:10.4028/www.scientific.net/MSF.917.202

Paper Titles

Enhanced Adsorption Properties of Ag-Loaded β-Zeolite towards Toluene
p.180

Effect of Particle Size and Chitosan Loading on Post-Combustion Carbon Dioxide Capture of Chitosan-Coated Natural Zeolite Adsorbent
p.185

Study of Photodegradation of Methylene Blue by Microbial Synthesized ZnS Material
p.190

Assessment of Corrosion Behavior in Artificial Saliva of Wires for Orthodontic Applications
p.197

Effects of Zr on the Microstructure and Mechanical Properties of 6061 Alloys
p.202

A Comparative Study of Delayed Hydride Cracking in Zr-3.5Sn-0.8Nb-0.8Mo and Zr-2.5Nb
p.207

Effects of Manganese on the Microstructures, Mechanical Properties and Deformation Characteristics of Cu-29Zn Alloy
p.212

Numerical Studies on Low-Velocity Impact Failure Response of Al 1100 under Blunt and Hemispherical Impactors
p.218

Selective Grain Growth and Grain Boundary Character Distribution Relationships in Magnetostrictive Fe-Ga Thin Sheets
p.223

HomeMaterials Science ForumMaterials Science Forum Vol. 917Effects of Zr on the Microstructure and Mechanical...

Effects of Zr on the Microstructure and Mechanical Properties of 6061 Alloys

Abstract:

This study discusses how the addition of trace amounts of Zr (0.15 wt%) affect the microstructure and change the mechanical properties of 6061 alloys. The results show that adding a trace amount of Zr can refine the grains thereby enhancing the alloy’s hardness and mechanical properties after aging heat treatment. After thermal exposure at 250°C, alloys without Zr displayed a reduction of mechanical properties because the metastable Mg₂Si strengthening phase grew into the coarse β-Mg₂Si equilibrium phase during the thermal exposure, while the alloys with Zr displayed a plentiful precipitation of the Al₃Zr phase, which effectively hindered the movement of dislocations and thus improved their mechanical properties.