The Effect of Heat Treatment and Aging Process on Microstructure and Mechanical Properties of A356 Aluminium Alloy Sections in Casting

Akhil, K.T.; Arul, Sanjivi

doi:10.1016/j.proeng.2014.12.318

Cited by 24 publications

(10 citation statements)

References 9 publications

(11 reference statements)

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“…Due to the modification and refining of the microstructure, tensile strength can be improved until 338 MPa by 0.6 wt.% of scandium which shows the highest tensile strength among the samples. The tensile strain developed during tensile test causes inhomogeneous deformation in the microstructure and so induces internal stresses between the intermetallic particles [11]. Higher value of tensile strength implies higher attraction between the particles.…”

Section: Tensile Test Evaluationmentioning

confidence: 99%

Effect of heat treatment on gravity die-cast Sc-A356 aluminium alloy

2017

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The effects of scandium addition (0.00 wt.%, 0.2 wt.%, 0.4 wt.% and 0.6 wt.%) and T6 heat treatment on the microstructure and mechanical properties of A356 aluminium alloy have been investigated in the research reported in this paper. The Sc inoculated specimens were prepared by gravity die-casting, according to ASTM B557-06 standard. The cast samples were then subjected to heat treatment at solutionizing temperature of 540°C for 8 h followed by water quenching and artificial aging at 160°C for 6 h. The microstructure, microhardness and tensile strength of the heat-treated samples were examined with use of scanning electron microscope (SEM), optical microscope, Vicker's hardness tester, and Instron static machine respectively. Heat treatment was found to be able to effectively reduce grain size down to 16 lm (0.6 wt.% Sc), from 40 lm (original A356). The tensile strength was significantly improved, up to 338 MPa for heat treated 0.6 wt.% Sc-A356 having been achieved. The microhardness of 118 HV has been obtained for heat treated 0.6 wt.%Sc-A356.

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Section: Tensile Test Evaluationmentioning

confidence: 99%

Effect of heat treatment on gravity die-cast Sc-A356 aluminium alloy

2017

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“…Aluminium and its alloys are extensively used in many industrial applications mainly because of their light weight construction. Usually, the strength of aluminium alloys can be improved in many ways, comprising of, (i) adding insoluble reinforcement to form Metal Matrix composites [1,2] (ii) by precipitation hardening [3], (iii) by cryogenic treatments [4], (iv) by surface coatings etc. Among the above processes, metal matrix composites have gained much attention in enhancing the mechanical and tribological properties of aluminium.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and tribological behaviours of aluminium hybrid composites reinforced by CDA-B₄C

Manikandan

2020

Mater. Res. Express

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This study focuses on fabricating aluminium hybrid metal matrix composites reinforced with ecofriendly agro waste, cow dung ash and boron carbide by two stage stir casting. Weight percentage of cow dung ash and boron carbide were added in ratios of 2.5:7.5, 5:5, and 7.5:2.5. The effects on mechanical properties like hardness, tensile strength, impact strength, flexural strength and wear behaviour were studied. SEM and EDX analysis were employed to study the fracture mechanism for tensile, impact and wear specimens. Optical microstructure images reveal uniform distribution of particles and XRD analysis confirms the presence of reinforcements. Increasing CDA particles has reduced the density of the hybrid composite up to 8%. A maximum increase in hardness, tensile strength and wear resistance was up to 30%, 56% and 56% respectively, and then a slight decrease in impact was found in increasing the CDA particles. Dimples, transgranular cleavage facets, cracks and micro ploughing, micro cuttings are revealed from the fractured specimens of tensile, impact and wear respectively.

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“…Addition of silicon carbide particles resulted in higher tensile strength and yield strength, further heat treatment of composites resulted in increased tensile strength [18]. Heat treated and aged composites have shown higher hardness and higher ultimate strength when compared to base material [19]. Increased ultimate tensile strength, yield strength and elongation was observed on T6 heat treated LM26 aluminum-silicon alloy when compared to untreated LM26 aluminum-silicon alloy [20].…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on Tensile and Corrosion Properties of LM6 Hybrid Metal Matrix Composite Reinforced with Cenosphere and Red Mud

Kumar¹,

Suresh²,

Rao³

et al. 2019

JMMCE

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The increased expectation of automotive, aviation and marine industries pertaining to the enhanced properties and their use in elevated temperature conditions and also corrosive environments leads to the development of the newer material to meet the requirements. The requirements of the automobile and marine applications call for the increased mechanical properties and lower density accompanied with higher resistance to oxidation. Hence the present research work is aimed at the development of Hybrid metal matrix composites (HMMCs) using low-density base material and reinforcements. The aluminum of grade LM6 is preferred material in automobile industries, because it can be cast to any complex geometry and possess good machinability, further upon heat treatment, the properties of LM6 alloy can be enhanced to meet the industry requirements. However, requirements of automobile industries consist of increased mechanical properties, lower density and higher corrosion resistance. Hence, in the present research work, it is aimed to develop newer composite material using LM 6 grade Aluminum alloy as matrix material which is reinforced with varied percent Cenosphere and Red mud.

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The Effect of Heat Treatment and Aging Process on Microstructure and Mechanical Properties of A356 Aluminium Alloy Sections in Casting

Cited by 24 publications

References 9 publications

Effect of heat treatment on gravity die-cast Sc-A356 aluminium alloy

Effect of heat treatment on gravity die-cast Sc-A356 aluminium alloy

Mechanical and tribological behaviours of aluminium hybrid composites reinforced by CDA-B₄C

Effect of Heat Treatment on Tensile and Corrosion Properties of LM6 Hybrid Metal Matrix Composite Reinforced with Cenosphere and Red Mud

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The Effect of Heat Treatment and Aging Process on Microstructure and Mechanical Properties of A356 Aluminium Alloy Sections in Casting

Cited by 24 publications

References 9 publications

Effect of heat treatment on gravity die-cast Sc-A356 aluminium alloy

Effect of heat treatment on gravity die-cast Sc-A356 aluminium alloy

Mechanical and tribological behaviours of aluminium hybrid composites reinforced by CDA-B4C

Effect of Heat Treatment on Tensile and Corrosion Properties of LM6 Hybrid Metal Matrix Composite Reinforced with Cenosphere and Red Mud

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Mechanical and tribological behaviours of aluminium hybrid composites reinforced by CDA-B₄C