Effect of heat treatment on impact resistance of AU5GT and AS7G06 aluminum alloys

Muzamil, Muhammad; Akhtar, Maaz; Samiuddin, Muhammad; Mehdi, Murtuza

doi:10.1007/s12206-016-0924-9

Cited by 8 publications

(3 citation statements)

References 6 publications

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“…In Fig. 5(d) (CFZ), Mode-I is a predominant fracture mode, which includes dimples that were spread over the entire fractured surface leads to the confirmation of ductile fracture (Muzamil et al, 2016). Moreover, at high magnification in Fig.…”

Section: Resultsmentioning

confidence: 83%

Comportamiento macromecánico de uniones soldadas de superficie (AA5083) utilizando soldadura con gas inerte de tungsteno con recocido de homogeneización en una sola etapa

Muzamil

Samiuddin

et al. 2020

REVMETAL

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Las uniones soldadas de superficie se consideran una estrategia avanzada e innovadora para lograr una resistencia aceptable sin consumir excesiva energía en la preparación de las muestras. Se soldaron dos superficies planas de la aleación AA5083 desde cuatro lados y utilizando el mismo material de relleno. En el análisis de la soldadura de superficie, se logró una profundidad de fusión de hasta 2 - 2,2 mm en cada lado, aunque la parte central permaneció sin fusionar. Después de la unión, se realizó un recocido de homogeneización a 275 y 325 °C durante 3 h, lo que aumentó el rendimiento de la unión hasta un 57,6%. Las micrografías ópticas de las zonas fusionadas han permitido la visibilidad de combinación alternativa de Al6(Mn, Fe) y Mg2Si con el aumento de la temperatura de recocido de 275 a 325 °C. Las observaciones de la superficie de la fractura incluyen el límite de la interface de la zona completamente fusionada (CFZ) y la zona fusionada del material base (BMFZ), que en combinación definieron todo el mecanismo de la fractura.

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Section: Resultsmentioning

confidence: 83%

Comportamiento macromecánico de uniones soldadas de superficie (AA5083) utilizando soldadura con gas inerte de tungsteno con recocido de homogeneización en una sola etapa

Muzamil

Samiuddin

et al. 2020

REVMETAL

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“…Addition of materials like boron carbide, Silicon carbide and graphite greatly enhances the tensile, flexural and hardness values of composites. [13][14][15][16] Hybrid composite reinforcements like TiC and MoS 2 provides better hardness and tribological properties. [17][18][19] Nano particles of Al 2 O 3 combined with strontium showed better tribological and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the mechanical, wear behaviour of copper matrix composite with 2V-Gr as reinforcement

Jabinth¹,

Selvakumar²

2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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In the present study, copper along with secondary hybrid reinforcements like Vanadium (V) and Graphene-L (Gr-L) with various proportions like pure Cu, Cu-2V, Cu-2V-0.5Gr, Cu-2V-1Gr, Cu-2V-1.5Gr are added to evaluate the behaviour of Copper Matrix Composite. The evenly dispersion of heterogeneous Copper Matrix Composite is achieved by the economical stir casting process. The heterogeneous mixture with metallic materials is a promising strategy to improve the properties of CMC. The prepared specimen is subjected to various testing processes to test the properties like Tensile strength, hardness, Yield strength, Impact strength and wear behaviours. The grain formation of hybrid CMC is also studied using an optical microscope to see the relationship between strength and grain size. The characterization of hybrid CMC is done by X-ray diffraction, Fourier Transform Infrared Spectroscopy and Energy Dispersive X-ray Spectroscopy. Fractography is also done to investigate the debonding mechanism of heterogeneous composites. The wear behavior of the hybrid composite is examined by Pin-on-disc tribometer. The results obtained, shows that, there is a reduction in grain size with the increase in addition of vanadium and graphene-L. The decrease in grain size has directly contributed to the improvement of mechanical properties of CMC. There is also an enhancement in wear behavior such as improvement in co-efficient of friction and wear resistance with increase in hybrid composition. This paves a new strategy and acts as a reliable reinforcement to improve the behaviour of copper based metal matrix composites.

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“…The curtailment of mass from elephantine structures in engineering applications is considered a decisive concern for automotive, aircraft, high-speed trains, and power utilities giant manufacturing industries [1]. Lightweight aluminum and magnesium alloys are considered promising structural materials and have been used extensively during the last decade [2]. In order to meet the requirement of acceptable strength, good formability, corrosion resistance, and welding ability, aluminum alloys are the prevailing excerpt.…”

Section: Introductionmentioning

confidence: 99%

Modified TIG Welding Joint Process: An Approach to Improve Microstructure and Fracto-Mechanical Behavior by MWCNTs Inducement in Al-Mg-Si Alloy

Muzamil

Akhtar

et al. 2019

Materials

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This work provides a comprehensive investigation of multi-walled carbon nanotubes (MWCNTs) inducement in weldment and their apparent effect on the microstructure, %elongation and ultimate fracture behavior of Al-Mg-Si alloy referring modified tungsten inert gas (TIG) welding joints. Serious experimental work is carried out at 1 wt%, 1.5 wt%, and 2 wt% of MWCNTs to provide a gradually increasing heterogeneous nucleation. The behavior of grain morphology showed the pure field of epitaxial growth without MWCNTs, and the forestry type morphology for 1 wt% MWCNTs at low welding currents (160 A), though there was a noticeable conversion into equiaxed (EQZ) grains filled with inter-dendritic particles at high welding currents (180 A and 200 A) for 1.5 wt% and 2 wt% of MWCNTs. Moreover, the formation of a cellular type network above the fusion line predominated initially at all parameters. Conversely, fine EQZ grains were formed as they moved upward into the welded zone (WZ) explicitly at a high heat input. A conceptual pictorial model is presented in the study which summarized the behavior of morphological changes at the utilized parameters. The welded joints have demonstrated an increasing trend of strength and %elongation in contrast to joints without added MWCNTs. Comparative results have shown an exceptional increment of 71 to 76% and 67 to 75% of elongation up to ultimate tensile strength (UTS), and a fracture point that was clinched for 1 wt% and 1.5 wt% MWCNTs at 180A. From macro to micro-examination of the fracture surfaces, pure ductile modes constituting elliptical cup and cone type isotropic flow was evident in all specimens. Detailed confirmation of the pull-out fracture mode of MWCNTs has highlighted in the scanning electron microscope (SEM) images that intimated a methodical contribution in load-transfer from matrix to the fiber under axial load. Overall, a concise en-route for MWCNTs inducement is well-appointed through tube fillers along with an activating facilitator (TiO2) in contrast to stereotype fillers for improved behavior termed as modified TIG welding joint process in study.

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Effect of heat treatment on impact resistance of AU5GT and AS7G06 aluminum alloys

Cited by 8 publications

References 6 publications

Comportamiento macromecánico de uniones soldadas de superficie (AA5083) utilizando soldadura con gas inerte de tungsteno con recocido de homogeneización en una sola etapa

Comportamiento macromecánico de uniones soldadas de superficie (AA5083) utilizando soldadura con gas inerte de tungsteno con recocido de homogeneización en una sola etapa

Enhancing the mechanical, wear behaviour of copper matrix composite with 2V-Gr as reinforcement

Modified TIG Welding Joint Process: An Approach to Improve Microstructure and Fracto-Mechanical Behavior by MWCNTs Inducement in Al-Mg-Si Alloy

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