Structure and properties of AlMg alloy after combination of ECAP and post-ECAP ageing

Tański, Tomasz; Snopiński, Przemysław; Pakieła, Wojciech; Borek, Wojciech; Prusik, Krystian; Rusz, Stanislav

doi:10.1016/j.acme.2015.12.004

Cited by 41 publications

(25 citation statements)

References 18 publications

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“…Aluminum alloys are characterized by low density, high electrical and thermal conductivity, high corrosion resistance as well as the impact strength does not decrease when the temperature drops. The disadvantage of aluminum and magnesium alloys is low hardness and abrasion resistance [12]. Improvements to the above properties are often achieved by the surface treatment that allows for obtaining hard and abrasion-resistant surface layer to increase the utility of these materials in new engineering applications.…”

Section: Introductionmentioning

confidence: 99%

“…The use of aluminum or magnesium alloys as components for cars and planes allows for significant weight reduction and thus reduces fuel consumption and operating costs [7,11,12,[14][15][16]. Aluminum alloys are characterized by low density, high electrical and thermal conductivity, high corrosion resistance as well as the impact strength does not decrease when the temperature drops.…”

Section: Introductionmentioning

confidence: 99%

“…The engineering materials requirements for advanced constructions make it very often that engineers are forced to use more advanced technology [1][2][3][4][5][6][7]. To improve the mechanical properties of metal alloys such as aluminum and magnesium as well as various type of steels (tool steels, stainless steels), thermal and chemical surface treatment are used [8][9][10][11][12][13][14]. The latest technologies include, among others, various technologies of laser surface treatment such as surface alloying, feeding and remelting [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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The structure and mechanical properties of AlMg5Si2Mn alloy after surface alloying by the use of fiber laser

et al. 2018

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Laser surface treatment is successfully applied to increase hardness as well as corrosion and wear resistance in light alloys such as aluminum or magnesium. The laser surface remelting also can be used to repair superficial cracks, voids or porosity caused by the mechanical impact, metallurgical process as well as the corrosive environment on the surface of the aluminum alloy. The purpose of this paper was to investigate the influence of a fiber laser surface treatment on the structure and properties of the EN AC AlMg5Si2Mn alloy. The goal of this investigation was to increase the hardness and improve tribological properties of the aluminum alloy surface as a result of the conducted laser surface treatment. During laser processing, the top surface of the aluminum alloy was enriched with Cr and Ni particles. The grain size of the applied particles was approximately about 60-130 m. The Cr-Ni powder has been introduced in the molten pool using vacuum feeder at a constant rate of 4.5 g/min. For surface remelting we used square laser beam at a size 3 × 3 mm and with the power of 3.0 kW. The linear laser scan rate of the beam was set at 0.5 m/min. Argon was used to protect the liquid metal alloy during surface treatment. Application of the laser treatment on aluminum alloy has enabled to obtain much harder as well as better wear resistant material compared to the untreated EN AC AlMg5Si2Mn.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The structure and mechanical properties of AlMg5Si2Mn alloy after surface alloying by the use of fiber laser

et al. 2018

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“…Severe plastic deformation methods are also introduced; they enable magnesium grain refining during treatment, which improves its formability. These methods include, among other things, equal channel angular pressing (ECAP), hydrostatic extrusion, KOBO extrusion [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Corrosion of Magnesium Alloy AZ31 with Additive Lithium

Przondziono¹,

Hadasik²,

Szala³

2017

Archives of Metallurgy and Materials

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The purpose of performed tests was evaluation of resistance to electrochemical corrosion of extruded magnesium alloy AZ31 with additive of 4.5% Li. Corrosion tests were performed in 0.01-2.0 M NaCl solutions. Potentiodynamic tests enabled to register polarisation curves. With application of stereoscopic microscope Nikon SMZ745T and electron scanning microscope Hitachi S-4200, the surface of the alloy was observed after immersion tests performed in 1-6 days. Results of performed tests prove explicitly deterioration of corrosion properties of the alloy with the increase of molar concentration of NaCl solution. It can be seen that corrosion process is intensive and that intensity increases with the increase of solution concentration and extension of exposure time.Keywords: magnesium alloy AZ31 with additive of 4.5% Li, electrochemical corrosion in NaCl, potentiodynamic test, immersion test, SEM

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“…The appropriately selected chemical composition of steel and the appropriately selected technological process allow to achieve a structure and a set of strength and plastic properties of steel, as illustrated by indicators equal to tensile strength multiplied by maximum elongation (the field under the curve -an integral of stress variations in the function of deformation is a measure of cracking ductility), whilst relatively high strain energy per unit volume ensures energy absorption and prevents premature fracture of the damaged car components. The intensive mechanical twinning mechanisms induced in high manganese austenitic steels, ensuring an increased reserve of energy unprecedented for other steels, allows to shapen technologically parts with a complicated shape and to unload energy during plastic deformation at high rates, in particular during a road accident [1][2][3][4][5][6][7][19][20][21]. The modern quality requirements for automotive vehicles and other means of transport relate primarily to implementation of programmes improving the passive safety of traffic users, to possibly lowest weight of vehicles and to the resulting reduction in fuel consumption and in the related emission of fumes into the air, as well as to comfort, aesthetics and many other aspects.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of High-Mn Austenitic Steel Tested under Static and Dynamic Conditions

Dobrzański

Borek

Mazurkiewicz

2016

Archives of Metallurgy and Materials

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MechanIcal propertIes of hIgh-Mn austenItIc steel tested under statIc and dynaMIc condItIonsThe purpose of the paper is to investigate X73MnsiAlNbTi25-1-3 high manganese austenitic steel containing 0.73% c to determine structural mechanisms decisive for increasing a reserve of cold deformation energy of such steel. The influence of a strain rate on the structure of the investigated steels and on the structural mechanisms decisive for their properties was analysed. Specialist research instrumentation was used for this purpose such as Scanning Transmission Microscopy (including EBSD examinations), conventional and high-resolution transmission electron microscopy together with diffraction examinations and metallographic examinations. It was found that the principal cause of an increased reserve of cold deformation energy of the investigated steels in dynamic conditions is the activation of mechanical twinning in the mutually intersecting systems in austenite grains and annealing twins, which are densifying when a cold deformation rate is growing, thereby confirming the basic mechanism of TWiP (TWinning induced Plasticity).

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Structure and properties of AlMg alloy after combination of ECAP and post-ECAP ageing

Cited by 41 publications

References 18 publications

The structure and mechanical properties of AlMg5Si2Mn alloy after surface alloying by the use of fiber laser

The structure and mechanical properties of AlMg5Si2Mn alloy after surface alloying by the use of fiber laser

Electrochemical Corrosion of Magnesium Alloy AZ31 with Additive Lithium

Mechanical Properties of High-Mn Austenitic Steel Tested under Static and Dynamic Conditions

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