390
J. Sundaram et al.
of P/M components and are used in automotive, aerospace and non-vehicle applications. In automotive applications, ferrous P/M components predominate over all
other available P/M products [2].
High-resistance aluminium-based materials manufactured by P/M over the past
two decades have been engineered for use in high-temperature applications such
as struts and other structural components in aerospace. P/M aluminium materials
have gained popularity in critical applications of reduced weight and relatively high
resistance.
Two distinct examples of P/M materials enhanced by aluminium. One is a standardized mix of aluminium powder and “extrinsic” dispersoids such as silicon carbide
or particulates of aluminium. The other is a rapidly solidified aluminium powder with
“intrinsic” dispersoids that contain metastable phases like AlfiFe contained in Al–
Fe–X alloys, where X is another element or rare earth metal transition. The strength
of these two types of reinforced aluminium powder materials is due in the integrated
microstructure to the distribution and thermal stability of each phase [3].
Baradeswaran et al. find that Al7075 is reinforced with 5–20 wt% of B 4 C,
increased wear resistance due to the presence of hard B 4 C particle load-bearing
and preventing micro-cutting pin removal on composite surfaces. [4].
Jayavelu et al. studied the wear resistance of two composites and aluminium alloy
with dry sliding wear by powder metallurgy method. Of these, aluminium alloy with
titanium diboride provides increased wear resistance and low friction coefficient [5].
Baskaran et al. stated by Taguchi method in the dry sliding wear study of Al7075
insitu casting with TiC. In this high-temperature pin, plastic deformation occurs
due to the formation of an oxide layer called a mechanically mixed layer (MML),
which is the reason for the gentle sliding of wear parts, providing excellent wear
resistance [6].
Wear is an important parameter to be considered in engineering field due to the
replacement of parts, component and assemblies especially in the automobile filed.
Hence, wear resistance calculation will give an idea how to improve the efficiency
by reducing the materials replacing rate [7].
In this study, wear test was conducted for the AA2014 and AHMMCs at 20 N
loading conditions, sliding velocity of 1.5 m/s, distance of 1000 m and under normal
atmosphere. The results were compared.
2 Experimental Procedure
AMMC is formed using the technique of powder metallurgy. The composite hybrid
comprises aluminium AA2014 alloy, alumina (Al 2 O 3 ) of 40 nm particle size and
titanium diboride (TiB 2 ) of 20 nm particle size elements.
Initially, for the production of hybrid aluminium composite, the elemental powder
mixture of aluminium alloy AA2014, alumina and TiB 2 powder was milled for 8 h. In
this process, two specimen combinations were developed as AA2014 and Aluminium
J. Sundaram et al.
of P/M components and are used in automotive, aerospace and non-vehicle applications. In automotive applications, ferrous P/M components predominate over all
other available P/M products [2].
High-resistance aluminium-based materials manufactured by P/M over the past
two decades have been engineered for use in high-temperature applications such
as struts and other structural components in aerospace. P/M aluminium materials
have gained popularity in critical applications of reduced weight and relatively high
resistance.
Two distinct examples of P/M materials enhanced by aluminium. One is a standardized mix of aluminium powder and “extrinsic” dispersoids such as silicon carbide
or particulates of aluminium. The other is a rapidly solidified aluminium powder with
“intrinsic” dispersoids that contain metastable phases like AlfiFe contained in Al–
Fe–X alloys, where X is another element or rare earth metal transition. The strength
of these two types of reinforced aluminium powder materials is due in the integrated
microstructure to the distribution and thermal stability of each phase [3].
Baradeswaran et al. find that Al7075 is reinforced with 5–20 wt% of B 4 C,
increased wear resistance due to the presence of hard B 4 C particle load-bearing
and preventing micro-cutting pin removal on composite surfaces. [4].
Jayavelu et al. studied the wear resistance of two composites and aluminium alloy
with dry sliding wear by powder metallurgy method. Of these, aluminium alloy with
titanium diboride provides increased wear resistance and low friction coefficient [5].
Baskaran et al. stated by Taguchi method in the dry sliding wear study of Al7075
insitu casting with TiC. In this high-temperature pin, plastic deformation occurs
due to the formation of an oxide layer called a mechanically mixed layer (MML),
which is the reason for the gentle sliding of wear parts, providing excellent wear
resistance [6].
Wear is an important parameter to be considered in engineering field due to the
replacement of parts, component and assemblies especially in the automobile filed.
Hence, wear resistance calculation will give an idea how to improve the efficiency
by reducing the materials replacing rate [7].
In this study, wear test was conducted for the AA2014 and AHMMCs at 20 N
loading conditions, sliding velocity of 1.5 m/s, distance of 1000 m and under normal
atmosphere. The results were compared.
2 Experimental Procedure
AMMC is formed using the technique of powder metallurgy. The composite hybrid
comprises aluminium AA2014 alloy, alumina (Al 2 O 3 ) of 40 nm particle size and
titanium diboride (TiB 2 ) of 20 nm particle size elements.
Initially, for the production of hybrid aluminium composite, the elemental powder
mixture of aluminium alloy AA2014, alumina and TiB 2 powder was milled for 8 h. In
this process, two specimen combinations were developed as AA2014 and Aluminium