Dynamic Recrystallization during Hot Extrusion in Mg-3Al-0.1Y Alloy

T. Noro; Tokuteru Uesugi; Yorinobu Takigawa; Masato Tsujikawa; Hiroshi Mabuchi; Kenji Higashi

doi:10.4028/www.scientific.net/AMR.26-28.433

Paper Titles

Extrudability and Bonding Strength of Copper Clad Aluminum Alloy Composites Produced by Indirect Extrusion Process
p.417

Effects of Microstructure on Mechanical Properties of HRS Processed SUS316L Stainless Steel
p.421

Analysis of Surface Roughness of Immersion Sn Plating Film via Micro Etch Process
p.425

Ring-Rolling Process for Manufacturing Ti-6Al-4V Plane and Profiled Ring-Products
p.429

Dynamic Recrystallization during Hot Extrusion in Mg-3Al-0.1Y Alloy
p.433

Warm Forging Characteristics of AZ31 Alloy
p.437

Low-Pressure Preheating Combustion Synthesis of Silicon Nitride
p.441

Improved Density Distribution in Powder Metallurgy Parts with Filtering Methods
p.445

Dynamic Recrystallization during Hot Extrusion in AZ31 and AZ80 Alloys
p.449

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 26-28Dynamic Recrystallization during Hot Extrusion in...

Dynamic Recrystallization during Hot Extrusion in Mg-3Al-0.1Y Alloy

Abstract:

Dynamic recrystallization behavior of Mg-3.1wt.%Al-0.1wt.%Y alloy was investigated. During extrusion, dynamic recrystallization occurred and very fine microstructure was obtained. We compared the relationship between Zener-Hollomon parameter, Z, and the dynamically recrystallized grain size, drec, and between the normalized recrystallized grain size, drec/d0, where d0 is the initial grain size, and Z for Mg-3.1wt. %Al-0.1wt.%Y with commercial Mg-3Al-0.5Zn alloy. As the result, the dynamically recrystallized grain size of Mg-3Al-0.1Y was finer than that of Mg-3Al-0.5Zn alloy under the equivalent Z, while the initial grain size of Mg-3Al-0.1Y was coarser than Mg-3Al-0.5Zn alloy. The normalized grain size for Mg-3Al-0.1Y alloy was much smaller than that of Mg-3Al-0.5Zn alloy under the equivalent Z. We conclude that small addition of Y to Mg-Al alloys is effective for grain refinement by dynamic recrystallization.