Effect of processing routes on microstructure and mechanical properties of 2014 Al alloy processed by equal channel angular pressing

Venkatachalam, Perumal; Kumar, Satish; Ravisankar, B.; Paul, V. Thomas; Vijayalakshmi, M.

doi:10.1016/s1003-6326(09)60380-0

Cited by 53 publications

(27 citation statements)

References 16 publications

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“…Among the four fundamental routes, route Bc provides the most deformation which in turn increases the mechanical properties. 4 In this work, experiments were conducted at below recrystallization temperature (around 473 K) of magnesium and its alloys. But, as shown in Figure 2, the results were found to be as follows: (a) many broken pieces at room temperature, (b) broken and cracked surfaces at 373 K, (c) cracked surfaces at 423 K without using any external pressures, and (d) obtained the final solid specimen at 483 K. Hence, further experiments were conducted from 483 K onwards at intervals of 50°C.…”

Section: Experimental Workmentioning

confidence: 99%

“…Also, complex microstructures and textures can be developed by changing the orientation of the billet between successive extrusion passes in ECAP. 3 Venkatachalam et al 4 produced desirable mechanical properties in test samples of 2014Al using different processing routes. They concluded that the maximum deformation was obtained in route Bc, where the specimen was rotated 90°counterclockwise after each pass.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure evolution in AZ61 alloy processed by equal channel angular pressing

Avvari

Narendranath

Mashamba

2016

Advances in Mechanical Engineering

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Magnesium and its alloys are finding increasing use in aerospace, automobile, nuclear, electrical, and structural engineering applications because of their high strength-to-weight ratio when compared to aluminum, titanium, and steel. In this work, AZ61 wrought magnesium alloy was processed using equal channel angular pressing at three different temperatures of 483, 523, and 573 K using up to four equal channel angular pressing passes. A microstructural study was conducted by measuring the average grain size after each pass, for the three different processing temperatures. The mechanical properties of the processed samples were noted to improve due to the reduction in the grain size after each equal channel angular pressing pass. After four equal channel angular pressing passes, the average grain size of the AZ61 samples was found to be reduced to 85%, 81%, and 70% for the pressing temperatures of 483, 523, and 573 K, respectively. The tensile strength of the AZ61 alloy increased with increase in the number of equal channel angular pressing passes for each of the temperatures when compared to as-received alloy. For instance, for the processing temperatures of 483, 523, and 573 K, the tensile strength increased by 24%, 10%, and 12%, respectively, at four equal channel angular pressing passes. Also, the percentage elongation of the alloy was increased with increase in processing temperatures. Moreover, fracture topographies of the tensile surfaces are illustrated through scanning electron microcopy and reveal ductile fracture than as-received alloy for four passes at each equal channel angular pressing processing temperature.

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Section: Experimental Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microstructure evolution in AZ61 alloy processed by equal channel angular pressing

Avvari

Narendranath

Mashamba

2016

Advances in Mechanical Engineering

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“…Many studies were focussed on the effects of alloying elements on the precipitation behaviour of aluminium alloys [4][5][6][7]. Specific to Al-4.5 %Cu alloy (AA2014), researchers have investigated the precipitation behaviour, production through different route and its performance and fatigue and creep behaviour [2,3,[8][9][10]. However, behaviour of same alloy at high temperature after specific heat treatment is always an interesting area of focus.…”

Section: Introductionmentioning

confidence: 99%

Micro-mechanical Behaviour of AA2014 Alloy During Hot Tensile Testing

Ashok

Maruthupandian²,

Kumar³

et al. 2015

Trans Indian Inst Met

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Nowadays, critical aircraft application demands high end performance of respective aerospace materials. Al-4.5 %Cu alloy known as duralumin have extensive application on spacecraft, as ring rolled and heat treated condition. However, behaviour of the same alloy at high temperature is always a thirst area to improve the understanding. This paper mainly focussed on the behaviour of duralumin alloy during hot tensile testing. Hot tensile testings were done at six different temperatures ranging from room temperature to 300°C. Mechanical properties at various temperatures were measured and studied along with the microstructural changes at all experimental conditions. Thermodynamic software package FactSage simulation was employed to identify the precipitates expected to precipitate at high temperature. Important conclusions were drawn from both theoretical and experimental observations.

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“…This process is capable of producing large fully dense samples containing an UFG size in the sub micrometer or nanometer range. ECAP is a well known severe plastic deformation (SPD) technique used for development of ultrafine microstructure in metals, alloys and composites [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…1. Samples were pressed for three passes through route A, B A , B C and C. The total equivalent strain introduced in this ECAP process was *1 in each pass [1,5,8] and the total strain after three passes is *3.…”

Section: Introductionmentioning

confidence: 99%

Densification of Al 5083 Mechanically Alloyed Powder by Equal Channel Angular Pressing

Gudimetla

Kumar

Ravisankar

et al. 2015

Trans Indian Inst Met

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Equal channel angular pressing (ECAP), one of the most important methods in SPD, is used for the consolidation of mechanically alloyed Al 5083 powder. This paper mainly focuses on the densification of Al 5083 mechanically alloyed powder by ECAP with and without application of back pressure up to three passes with four different routes at room temperature. Aluminum can is used to encapsulate the powder. The particle size, crystallite size, microstructure and density were evaluated by scanning electron microscope and X-ray diffraction peak profile analysis. The crystallite size was measured by Williamson Hall analysis. Density and hardness were increased with increasing number of passes and upon sintering after ECAP. Good densification as well as good powder bonding was observed after three passes of ECAP.

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Effect of processing routes on microstructure and mechanical properties of 2014 Al alloy processed by equal channel angular pressing

Cited by 53 publications

References 16 publications

Microstructure evolution in AZ61 alloy processed by equal channel angular pressing

Microstructure evolution in AZ61 alloy processed by equal channel angular pressing

Micro-mechanical Behaviour of AA2014 Alloy During Hot Tensile Testing

Densification of Al 5083 Mechanically Alloyed Powder by Equal Channel Angular Pressing

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