Some Issues in Relations between Microstructure and Indentation Measurements

2016 ◽  
Vol 258 ◽  
pp. 131-136 ◽  
Author(s):  
Petr Haušild ◽  
Aleš Materna ◽  
Lenka Kocmanová ◽  
Jiří Matějíček
Keyword(s):  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Material Properties ◽  
Metal Matrix ◽  
Depth Of Penetration ◽  
Progressive Change ◽  
Tungsten Metal ◽  
Materials Behavior ◽  
Measured Hardness

Case study on copper-tungsten metal-matrix composite was performed. The influence of presence of an interface on the distribution of measured hardness and/or modulus was incorporated by a statistical distribution taking into account a progressive change of materials behavior as a function of depth of penetration. Unbiased (intrinsic) material properties (hardness and Young’s modulus) were then successfully extracted from the experimental grid indentation data.

scholarly journals Static and Dynamic Analysis of Aircraft Wing Made by LM 25 and ALSiC Metal Matrix Composite

2019 ◽  
Vol 8 (6S3) ◽  
pp. 1319-1323
Keyword(s):  
Silicon Carbide ◽  
Composite Material ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Material Properties ◽  
Metal Matrix ◽  
Hardness Test ◽  
Casting Process ◽  
Aircraft Wing ◽  
Static And Dynamic Analysis

This paper discusses about the weight reduction in the wing structure that improves the productivity and performance of an aircraft wing. Decrease in the mass of the wings has higher significance compared all other air craft parts Aircraft wing structures are analyzed with LM25 and a metal matrix composite material which is a mix of LM25 and Silicon Carbide (SiC) where in aluminum is the base metal and silicon carbide is added in different weight proportions. By varying silicon carbide percentage in LM25 four types of samples are prepared utilizing stir casting process. The young's modulus, Poisson's ratio and thickness of every sample are determined cautiously by exposing the sample to tensile test and hardness test. By looking at the material properties acquired tentatively ideal level of silicon carbide in aluminum is found. Static basic investigation is completed in ANSYS by contributing the properties of the ideal example which are acquired tentatively. The outcomes acquired from ANSYS for pure AL25 and metal matrix composite (SiC) are compared. By looking at the outcomes it is discovered that composite material has preferred material properties and stresses over LM25.

scholarly journals Generic Framework for Conceptual Design Using Concurrent Engineering Strategy. A Case Study: Advanced Material Application Product Development of Metal Matrix Composite Component

2012 ◽  
Vol 626 ◽  
pp. 99-108 ◽  
Author(s):  
Nanang Fatchurrohman ◽  
Shamsuddin Sulaiman ◽  
S.M. Sapuan ◽  
Mohd Khairol Anuar Ariffin ◽  
B.T.H.T. Baharuddin
Keyword(s):  
Product Development ◽  
Metal Matrix Composite ◽  
Conceptual Design ◽  
Matrix Composite ◽  
Concurrent Engineering ◽  
Metal Matrix ◽  
Brake Disc ◽  
Generic Framework ◽  
Engineering Strategy

One of the keys to success for product competition in the market depends on the effectiveness of its product development. This article presents a generic framework of product development which focuses on the conceptual design. The framework is developed with concurrent engineering strategy where it takes into account the product life cycle considerations within the early phases of the conceptual design. The proposed framework starts from product investigation, product specification and conceptual design. Implementation of the framework is illustrated on a case study of metal matrix composite brake disc rotor design, where there is an avenue for conceptual research since the progress of metal matrix composite utilisation in the automotive industry is limited due to their high cost in comparison with conventional alloy. The possible outcome for product investigation, product specification and conceptual design of metal matrix composite brake disc rotor are presented as part of the selection of best conceptual design. Moreover, the proposed framework is an aid to help engineers and designers to make an effective and systematic product development through a sound conceptual design decision from possible product concept alternatives.

Experimental Verification of Mechanical Properties of SiC Reinforced Aluminium Metal Matrix Composite using Ultrasonic Technique

2019 ◽  
Vol 11 (5) ◽  
Author(s):  
R. Sathishbabu ◽  
P.K. Dash ◽  
R. Santhanakrishnan ◽  
S. Sathish
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix Composite ◽  
Ultrasonic Velocity ◽  
Matrix Composite ◽  
Material Properties ◽  
Metal Matrix ◽  
Ultrasonic Technique ◽  
Weight Percentage ◽  
Sic Particles ◽  
Aluminium Metal

In this paper, an experimental based investigation of mechanical properties of SiC particles reinforced aluminium metal matrix composite (AMMC) manufactured by liquid metallurgy process has been carried out. The ultrasonic technique has been used for characterisation of material properties by correlating the attenuation of ultrasonic velocity with the amount of particle reinforcements. The amount of SiC particle loading has influenced the ultrasonic velocity at both manufacturing stage and forging test. The material properties like tensile strength, elongation percentage, hardness, wear resistance, impact strength and strength under different forging conditions have been significantly influenced by the weight percentage of SiC particles. The failure of AMMC specimens were characterized through SEM analysis.

scholarly journals New Technique for Conceptual Selection of Manufacturing Process and Material, Case Study: Metal Matrix Composite Component

2013 ◽  
Vol 789 ◽  
pp. 82-86 ◽  
Author(s):  
N. Fatchurrohman ◽  
S. Sulaiman ◽  
S.M. Sapuan ◽  
Mohd Khairol Anuar Ariffin ◽  
B.T.H.T. Baharuddin
Keyword(s):  
Metal Matrix Composite ◽  
Conceptual Design ◽  
Matrix Composite ◽  
Manufacturing Process ◽  
Metal Matrix ◽  
New Technique ◽  
Network Process ◽  
Design Selection ◽  
A New Technique

This article introduces a new technique involving concurrent engineering (CE) strategy and analytical network process (ANP) technique to form a ranking methodology as a part of the conceptual design selection (CS). The proposed method is referred as concurrent network (CN). The objective of this study is to simultaneously consider of all features of product elements by implementing CE strategy. Furthermore, CN enables interdependence and interrelationship analysis between product elements by application of ANP. In this study, CN is utilized for a conceptual design of metal matrix composite (MMC) component. The results show that by using CN, all important product parameters can be considered simultaneously during the CDS and the importance weights of manufacturing process parameters and material parameters which are related to MMC component performance are attained.

TEM examination of 2014-SiC metal matrix composite

1988 ◽  
Vol 46 ◽  
pp. 726-727
Author(s):  
M. G. Burke ◽  
M. N. Gungor ◽  
P. K. Liaw
Keyword(s):  
Metal Matrix Composite ◽  
Metal Matrix Composites ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Tensile Deformation ◽  
Microstructural Characterization ◽  
Thin Foil ◽  
Matrix Alloy ◽  
Matrix Composites ◽  
Ion Milling

Aluminum-based metal matrix composites offer unique combinations of high specific strength and high stiffness. The improvement in strength and stiffness is related to the particulate reinforcement and the particular matrix alloy chosen. In this way, the metal matrix composite can be tailored for specific materials applications. The microstructural characterization of metal matrix composites is thus important in the development of these materials. In this study, the structure of a p/m 2014-SiC particulate metal matrix composite has been examined after extrusion and tensile deformation.Thin-foil specimens of the 2014-20 vol.% SiCp metal matrix composite were prepared by dimpling to approximately 35 μm prior to ion-milling using a Gatan Dual Ion Mill equipped with a cold stage. These samples were then examined in a Philips 400T TEM/STEM operated at 120 kV. Two material conditions were evaluated: after extrusion (80:1); and after tensile deformation at 250°C.

An appraisal of characteristic mechanical properties and microstructure of friction stir welding for Aluminium 6061 alloy – Silicon Carbide (SiCp) metal matrix composite

2019 ◽  
Vol 13 (4) ◽  
pp. 5804-5817
Author(s):  
Ibrahim Sabry
Keyword(s):  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Welded Joint ◽  
Rotation Speed ◽  
Fusion Welding ◽  
Friction Stir ◽  
Al 6061

It is expected that the demand for Metal Matrix Composite (MMCs) will increase in these applications in the aerospace and automotive industries sectors, strengthened AMC has different advantages over monolithic aluminium alloy as it has characteristics between matrix metal and reinforcement particles.  However, adequate joining technique, which is important for structural materials, has not been established for (MMCs) yet. Conventional fusion welding is difficult because of the irregular redistribution or reinforcement particles.  Also, the reaction between reinforcement particles and aluminium matrix as weld defects such as porosity in the fusion zone make fusion welding more difficult. The aim of this work was to show friction stir welding (FSW) feasibility for entering Al 6061/5 to Al 6061/18 wt. % SiCp composites has been produced by using stir casting technique. SiCp is added as reinforcement in to Aluminium alloy (Al 6061) for preparing metal matrix composite. This method is less expensive and very effective. Different rotational speeds,1000 and 1800 rpm and traverse speed 10 mm \ min was examined. Specimen composite plates having thick 10 mm were FS welded successfully. A high-speed steel (HSS) cylindrical instrument with conical pin form was used for FSW. The outcome revealed that the ultimate tensile strength of the welded joint (Al 6061/18 wt. %) was 195 MPa at rotation speed 1800 rpm, the outcome revealed that the ultimate tensile strength of the welded joint (Al 6061/18 wt.%) was 165 MPa at rotation speed 1000 rpm, that was very near to the composite matrix as-cast strength. The research of microstructure showed the reason for increased joint strength and microhardness. The microstructural study showed the reason (4 %) for higher joint strength and microhardness.  due to Significant   of SiCp close to the boundary of the dynamically recrystallized and thermo mechanically affected zone (TMAZ) was observed through rotation speed 1800 rpm. The friction stir welded ultimate tensile strength Decreases as the volume fraction increases of SiCp (18 wt.%).

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