Assessment of mechanical properties of LM13 aluminum alloy hybrid metal matrix composites

Abstract

Aluminium LM13 alloy based hybrid particulate composites have been processed by adding boron carbide (B4C) and titanium diboride (TiB2) particles. The wt% of titanium diboride (TiB2) is varied as 0, 3, 6, 9, 12, 15 and a constant 3wt% of boron carbide is used to prepare the composites. Stir cast route is used to fabricate the composites. The microstructures of castings are examined using computer aided image analyzer. Vicker hardness, yield strength, ultimate tensile strength and energy absorbed by the composites are examined and reported. The results show that uniform dispersion of TiB2 and B4C reinforcement phases in Al LM13 alloy. Micro hardness of composites enhanced upto 36.6% when compared to Al alloy reinforced with 3wt% of B4C particles. Ultimate tensile strength of Al alloy is improved from 151 MPa to 192 MPa by reinforcing 15wt% of titanium diboride particles. LM13 aluminium alloy hybrid particulate composites offers superior vicker hardness, yield strength, utlimate tensile strength and impact strength over LM13 aluminium alloy based single particle reinforced composites.

Investigation on Mechanical Behaviour of LM6 Aluminum Alloy Hybrid Composites Processed Using Stir Casting Process

“…is may also contribute to weak strength. Rajamanickam and Uvaraja reported the assessment of mechanical properties of LM13 aluminum alloy hybrid metal matrix composites using the stir casting route and obtained the same results [25].…”

Production of LM28 Tubes by Mechanical Alloying and Using Friction Stir Extrusion

“…Comparing the effects of FSE on the LM13 s mechanical properties with the effects of other processes, Hemanth and Arasukumar [31] produced an LM13/TiC composite by the addition of 3-9 wt.% of TiC to LM13 using stir casting and successfully improved the tensile strength from 155 MPa to at most 173 MPa. Rajamanickam and Uvaraja [32] also produced LM13 aluminum alloy hybrid metal matrix composites by varying the amount of titanium diboride (TiB2) from 0-15 wt.% and adding a constant 3 wt.% of boron carbide. They improved the ultimate tensile strength of LM13 from 151 to 192 MPa by reinforcing 15 wt.% of titanium diboride along with 3 wt.% of boron carbide particles.…”

Aluminum and alumina/MoS2/cellulose derivative composite: design and performance

“…When metallic nanoparticles and non-metallic oxides, such as Al [15], Cu [13], Al 2 O 3 [16], SiO 2 [17], CuO [18], and ZnO [19], are added to the polymer, they can enhance the load capacity and anti-wear effect of the material. Various morphologies, sizes, and compositions of additives have different strengthening effects on the mechanical properties of composites, such as ZnO nanorod [20], graphene oxide [21], Y 2 O 3 [22], and TiB 2 [23]. Numerous studies show that to obtain a good anti-wear effect, the additive volume of the microparticles must reach 25-35 vol%, while only 1-5 vol% of nanoparticles is sufficient to reduce the coefficient of friction and abrasion rate [24].…”