Effects of Quenching Rate on the Microstructures and Mechanical Properties of the Heat Treatable Mg-4.2Y-2.3Nd-1.0Gd-0.6Zr Magnesium Alloy

Y.H. Kang; D. Wu; Rongshi Chen; En-Hou Han

doi:10.4028/www.scientific.net/MSF.816.356

Paper Titles

Effect of Yttrium Content on the Ultra-High Cycle Fatigue Behavior of Mg-Zn-Y-Zr Alloys
p.333

Effect of Al-5Zr-1.1B Grain Refiner on Microstructure and Mechanical Properties of AZ91D Magnesium Alloy
p.337

The Effect of Casting Speed on Physical Fields of AZ80 Magnesium Alloy during DC Casting
p.343

Microstructure and Properties of Friction Stir Welded Mg-1Al-xSn-0.3Mn Magnesium Alloys
p.349

Effects of Quenching Rate on the Microstructures and Mechanical Properties of the Heat Treatable Mg-4.2Y-2.3Nd-1.0Gd-0.6Zr Magnesium Alloy
p.356

Tensile Behavior of Mg-Nd-Zn-Zr Alloy at Medium and High Temperature
p.362

Grain Refining Behavior of Zr, Al₂Y and Al₄C₃ Particles in Magnesium Alloys by the First-Principles Calculations
p.370

Microstructure and Phase Transformation of Super-High Pressure Mg-Li Alloy
p.375

Influences of Tensile Temperature on the Mechanical Properties of Rolled Mg-Zn-Gd Sheets with Non-Basal Texture
p.381

HomeMaterials Science ForumMaterials Science Forum Vol. 816Effects of Quenching Rate on the Microstructures...

Effects of Quenching Rate on the Microstructures and Mechanical Properties of the Heat Treatable Mg-4.2Y-2.3Nd-1.0Gd-0.6Zr Magnesium Alloy

Abstract:

The effects of quenching rate on the microstructures and mechanical properties of the heat treatable Mg-4.2Y-2.3Nd-1.0Gd-0.6Zr (wt.%) (WE43) sand-cast alloy have been studied using a combination of mechanical testing, Vickers hardness testing, optical microscopy (OM) and scanning electron microscope (SEM). Two quenching conditions, either air quenching or 60°C water quenching, were employed. The results indicate that some precipitates have formed in the matrix and grain boundaries in the air-quenched solutionized alloy. And the Vickers hardness and yield strength (YS) is HV77 and 155 MPa, respectively, which is slightly more than the 60°C water-quenched solutionized alloy. However, the ultimate tensile strength (UTS) and yield strength (YS) of the peak-aged at 250°C (T6) of the two quenching conditions are both 273 MPa and 212 MPa, respectively. And they have similar age hardening curves at 250°C and the T6 microstructure. So the results indicate that in this work of quenching rate range WE43 alloy has few quench sensitivity effect.