The microstructure and mechanical properties of AZ91–SiC nanocomposites processed by cyclic closed-die forging were investigated. The results showed that much finer grain size and more homogeneous distribution of Mg17Al12 phase and SiC nanoparticles were obtained along with significant improvement in strength and elongation after five passes. During cyclic closed-die forging processing, the agglomeration of nanoparticles disintegrated through kneading effect induced by intense matrix flow, and the nano-sized SiC particles were dispersed uniformly into the matrix. However, a few SiC clusters still existed due to the high surface energy of nanoparticles. Properties enhancement of the composites was mainly attributed to Hall–Petch effect and Orowan strengthening.
GohCSWeiJLeeLC. Properties and deformation behaviour of Mg–Y2O3 nanocomposites. Acta Mater2007; 55: 5115–5121.
2.
SaravananRASurappaMK. Fabrication and characterisation of pure magnesium-30 vol.% SiCP particle composite. Mater Sci Eng A2000; 276: 108–116.
3.
SrikanthNGuptaM. Damping characterization of Mg–SiC composites using an integrated suspended beam method and new circle-fit approach. Mater Res Bull2002; 37: 1149–1162.
HassanSFGuptaM. Development of ductile magnesium composite materials using titanium as reinforcement. J Alloys Compound2002; 345: 246–251.
6.
ViswanathanVLahaTBalaniK. Challenges and advances in nanocomposite processing techniques. Mater Sci Eng R2006; 54: 121–285.
7.
CaoGKobliskaJKonishiH. Tensile properties and microstructure of SiC nanoparticle-reinforced Mg-4Zn alloy fabricated by ultrasonic cavitation-based solidification processing. Metall Mater Trans A2008; 39A: 880–886.
8.
HassanSFGuptaM. Development of high performance magnesium nano-composites using nano-Al2O3 as reinforcement. Mater Sci Eng A2005; 392: 163–168.
9.
GuptaMParamsothyMHassanSF. Simultaneously enhanced tensile and compressive response of AZ31-NanoAl2O3-AA5052 macrocomposite. J Mater Sci2009; 44: 4860–4873.
10.
HassanSFGuptaM. Effect of different types of nano-size oxide participates on microstructural and mechanical properties of elemental Mg. J Mater Sci2006; 41: 2229–2236.
11.
GuptaMZhongXLWongWLE. Enhancing strength and ductility of magnesium by integrating it with aluminum nanoparticles. Acta Mater2007; 55: 6338–6344.
12.
Habibnejad-KorayemMMahmudiRPooleWJ. Enhanced properties of Mg-based nano-composites reinforced with Al2O3nano-particles. Mater Sci Eng A2009; 519: 198–203.
13.
NieKBWangXJHuXS. Microstructure and mechanical properties of SiC nanoparticles reinforced magnesium matrix composites fabricated by ultrasonic vibration. Mater Sci Eng A2011; 528: 5278–5282.
14.
FerkelHMordikeBL. Magnesium strengthened by SiC nanoparticles. Mater Sci Eng A2001; 298: 193–199.
15.
LiuJLSuryanarayanaCGhoshD. Synthesis of Mg-Al2O3 nanocomposites by mechanical alloying. J Alloys Compds2013; 563: 165–170.
16.
HassanSFGuptaM. Development of nano-Y2O3 containing magnesium nanocomposites using solidification processing. J Alloys Compds2007; 429: 176–183.
17.
ChoiHAlba-BaenaNNimityongskulS. Characterization of hot extruded Mg/SiC nanocomposites fabricated by casting. J Mater Sci2011; 46: 2991–2997.
18.
RezayatMAkbarzadehAOwhadiA. Fabrication of high-strength al/SiCp nanocomposite sheets by accumulative roll bonding. Metall Mater Trans A2012; 43: 2085–2093.
19.
AshidaMHoritaZ. Effects of ball milling and high-pressure torsion for improving mechanical properties of Al-Al2O3 nanocomposites. J Mater Sci2012; 47: 7821–7827.
20.
AsadiPFarajiGMasoumiA. Experimental investigation of magnesium-base nanocomposite produced by friction stir processing: effects of particle types and number of friction stir processing passes. Metall Mater Trans A2011; 42: 2820–2832.
21.
GoussousSXuWWuX. Al-C nanocomposites consolidated by back pressure equal channel angular pressing. Compos Sci Technol2009; 69: 1997–2001.
22.
GuoWWangQDYeB. Microstructure and mechanical properties of AZ31 magnesium alloy processed by cyclic closed-die forging. J Alloys Compds2013; 558: 164–171.
23.
GuoWWangQDYeB. Enhanced microstructure homogeneity and mechanical properties of AZ31-Si composite by cyclic closed-die forging. J Alloys Compds2013; 552: 409–417.
24.
FanGDZhengMYHuXS. Improved mechanical property and internal friction of pure Mg processed by ECAP. Mater Sci Eng A2012; 556: 588–594.
25.
GuoWWangQDYeB. Enhanced microstructure homogeneity and mechanical properties of AZ31 magnesium alloy by repetitive upsetting. Mater Sci Eng A2012; 540: 115–122.
26.
RadiYMahmudiR. Effect of Al2O3 nano-particles on the microstructural stability of AZ31 Mg alloy after equal channel angular pressing. Mater Sci Eng A2010; 527: 2764–2771.
27.
AsadiPFarajiGBesharatiMK. Producing of AZ91/SiC composite by friction stir processing (FSP). Int J Adv Manuf Technol2010; 51: 247–260.
28.
ChenYJWangQDRovenHJ. Network-shaped fine-grained microstructure and high ductility of magnesium alloy fabricated by cyclic extrusion compression. Scr Mater2008; 58: 311–314.
29.
NieKBDengKKWangXJ. Microstructures and mechanical properties of SiCp/AZ91 magnesium matrix nanocomposites processed by multidirectional forging. J Alloys Compds2015; 622: 1018–1026.
30.
FarajiGAsadiP. Characterization of AZ91/alumina nanocomposite produced by FSP. Mater Sci Eng A2011; 528: 2431–2440.
