Influence of Extrusion Rate on Microstructure and Mechanical Properties of Magnesium Alloy AM60 and an AM60-based Metal Matrix Nanocomposite

High-pressure torsion (HPT) is one of the major severe plastic deformation (SPD) procedures where disk metals generally achieve exceptional grain refinement at ambient temperatures. HPT has been applied for the consolidation of metallic powders and bonding of machining chips whereas very limited reports examined the application of HPT for the fabrication of nanocomposites. An investigation was initiated to evaluate the potential for the formation of a metal matrix nanocomposite (MMNC) by processing two commercial metal disks of Al-1050 and ZK60 magnesium alloy through HPT at room temperature. Evolutions in microstructure and mechanical properties including hardness and plasticity were examined in the processed disks with increasing numbers of HPT turns up to 5. This study demonstrates the promising possibility for using HPT to fabricate a wide range of hybrid MMNCs from simple metals.

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Microstructures and tensile mechanical properties of an ultrafine grained AA6063–5vol%SiC metal matrix nanocomposite synthesized by powder metallurgy

Materials Science and Engineering A ◽

10.1016/j.msea.2015.09.059 ◽

2015 ◽

Vol 648 ◽

pp. 225-234 ◽

Cited By ~ 13

Author(s):

X. Yao ◽

Y.F. Zheng ◽

J.M. Liang ◽

D.L. Zhang

Keyword(s):

Mechanical Properties ◽

Powder Metallurgy ◽

Metal Matrix ◽

Ultrafine Grained ◽

Metal Matrix Nanocomposite ◽

Matrix Nanocomposite

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Study of Structural and Mechanical Properties of Al/Nano-Al2O3 Metal Matrix Nanocomposite Fabricated by Powder Metallurgy Method

Transactions of the Indian Institute of Metals ◽

10.1007/s12666-020-01931-x ◽

2020 ◽

Vol 73 (4) ◽

pp. 1007-1013 ◽

Cited By ~ 2

Author(s):

Vilas Tiku ◽

Kumar Navin ◽

Rajnish Kurchania

Keyword(s):

Mechanical Properties ◽

Powder Metallurgy ◽

Metal Matrix ◽

Powder Metallurgy Method ◽

Metal Matrix Nanocomposite ◽

Matrix Nanocomposite

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Influence of AlN Nanoparticle Addition on Microstructure and Mechanical Properties of Extruded Pure Magnesium and an Aluminum-Free Mg-Zn-Y Alloy

Metals ◽

10.3390/met9060667 ◽

2019 ◽

Vol 9 (6) ◽

pp. 667 ◽

Cited By ~ 3

Author(s):

Danai Giannopoulou ◽

Hajo Dieringa ◽

Jan Bohlen

Keyword(s):

Mechanical Properties ◽

Metal Matrix ◽

Recrystallization Behavior ◽

Mechanical Stirring ◽

Intermetallic Particles ◽

Metal Matrix Nanocomposite ◽

Hardness Increase ◽

Cast Condition ◽

Matrix Nanocomposite ◽

Alloy Metal

A pure Mg and a ZW0303 alloy metal matrix nanocomposite reinforced with AlN nanoparticles were prepared assisted by mechanical stirring and sonication for deagglomeration of particles. The produced nanocomposites were investigated to determine the influence of the AlN nanoparticles during indirect extrusion on the microstructure and texture development, as well as the resulting hardness and mechanical properties. For pure Mg, grain refinement and hardness increase due to the addition of AlN were revealed in the as-cast and the extruded condition. For ZW0303, the same was found for the as-cast condition. However, contamination of the alloy with Al significantly changes the recrystallization behavior during extrusion. This is directly related to the removal of solute Y due to the formation of intermetallic particles. Particle and grain size effects were distinguished for this alloy.

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