The Effect of the Addition of Ti Metal Fiber and Al-Mg Alloy Binder on the Mechanical Properties of Al-Si/SiCp Metal Matrix Composites Fabricated by Powder Metallurgy

Nanoparticle reinforced metal matrix possess much better mechanical properties over microparticle reinforced metal matrix composites as well as corresponding monolithic matrix materials. However, the fabrication methods of nanoparticle reinforced metal matrix composites are complex and expensive. This paper investigates and discusses the mechanisms of all the fabrication process, such as powder metallurgy, liquid metallurgy, compocasting and hybrid methods, available in the literature. This gives an insight on challenges associated with different processes and ways to improve the fabrication processes. It is found that modified traditional fabrication processes are mainly applied for these materials. The main problem is to achieve reasonably uniform distribution of nanoparticle reinforcement in the methods other than mechanical alloying when the volume or weight percent of reinforcement is higher (> 1%).

Download Full-text

Powder metallurgy of Al-based metal matrix composites reinforced with β-Al3Mg2 intermetallic particles: Analysis and modeling of mechanical properties

Acta Materialia ◽

10.1016/j.actamat.2009.06.017 ◽

2009 ◽

Vol 57 (15) ◽

pp. 4529-4538 ◽

Cited By ~ 107

Author(s):

S. Scudino ◽

G. Liu ◽

M. Sakaliyska ◽

K.B. Surreddi ◽

J. Eckert

Keyword(s):

Mechanical Properties ◽

Powder Metallurgy ◽

Metal Matrix Composites ◽

Metal Matrix ◽

Matrix Composites ◽

Intermetallic Particles

Download Full-text

Manufacturing and Characterization of AA1100 Aluminum Alloy Metal Matrix Composites Reinforced by Silicon Carbide and Alumina Processed by Powder Metallurgy

Materials Science Forum ◽

10.4028/www.scientific.net/msf.869.447 ◽

2016 ◽

Vol 869 ◽

pp. 447-451 ◽

Cited By ~ 1

Author(s):

Oscar Olimpio Araújo Filho ◽

Alexandre Douglas Araújo de Moura ◽

Everthon Rodrigues de Araújo ◽

Maurílio José dos Santos ◽

Cezar Henrique Gonzalez ◽

...

Keyword(s):

Mechanical Properties ◽

Silicon Carbide ◽

Aluminum Alloy ◽

Powder Metallurgy ◽

Aluminum Alloys ◽

Metal Matrix Composites ◽

Metal Matrix ◽

Matrix Composites ◽

New Materials ◽

Aa1100 Aluminum Alloy

Powder Metallurgy (PM) Techniques consists in a suitable technique to process composites materials. A specific PM technique of mechanical alloying developed to produce new materials in the solid state is a consolidated route to obtain aluminum alloys metal matrix composites. Aluminum alloys metal matrix composites allies the good properties of aluminum and its alloys but with poor mechanical properties and the reinforcement of ceramics phases which add better mechanical properties to these alloys. The research of this materials processing by PM techniques presented new materials with improved properties. In this work an AA1100 aluminum alloy was reinforced by particulate silicon carbide and alumina types of ceramic phases. The powders were mixed and then processed by mechanical alloying in a SPEX vibratory type mill. Then the powders obtained were compacted and vacuum sintered. The sintered composites were characterized by means of Scanning Electron Microscopy (SEM) plus Energy Dispersive Spectroscopy (EDS) and Vickers hardness (HV) tests to evaluate the mechanical behavior.

Download Full-text

Features of the Processing of AA2124 Aluminum Alloy Metal Matrix Composites Reinforced by Silicon Nitride Prepared by Powder Metallurgy Techniques

Materials Science Forum ◽

10.4028/www.scientific.net/msf.802.108 ◽

2014 ◽

Vol 802 ◽

pp. 108-113 ◽

Cited By ~ 2

Author(s):

Carlos Augusto Bezerra ◽

Alexandre Douglas Araújo de Moura ◽

Edval Gonçalves de Araújo ◽

Maurílio José dos Santos ◽

Oscar Olimpio de Araújo Filho

Keyword(s):

Mechanical Properties ◽

Aluminum Alloy ◽

Silicon Nitride ◽

Powder Metallurgy ◽

Aluminum Alloys ◽

Mechanical Alloying ◽

Metal Matrix Composites ◽

Metal Matrix ◽

Matrix Composites ◽

New Materials

Powder Metallurgy (PM) Techniques consists in a suitable technique to process composites materials. A specific PM technique of mechanical alloying developed to produce new materials in the solid state is a well known route to obtain aluminum alloys metal matrix composites. Aluminum alloys metal matrix composites allies the good properties of aluminum and its alloys but with poor mechanical properties and the reinforcement of ceramics phases which add better mechanical properties to these alloys. The research of this materials processing by PM techniques presented new materials with improved properties. In this work an AA2124 aluminum alloy was reforced by particulated silicon nitride a kind of ceramic phase. The powders were mixed and then processed by mechanical alloying in a SPEX vibratory type mill. Then the powders obtained were compacted and vacuum sintered. The sintered composites were characterized by means of Scanning Electron Microscopy (SEM) plus Energy Dispersive Spectroscopy (EDS) and Vickers hardness tests to evaluate the mechanical behavior.

Download Full-text