The effect of trace elements on the sintering of an Al–Zn–Mg–Cu ALLOY

Schaffer, G. B.; Huo, S. H.; Drennan, John; Auchterlonie, Graeme

doi:10.1016/s1359-6454(01)00177-x

Cited by 60 publications

(38 citation statements)

References 10 publications

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“…The volume fraction of lubricants is maintained between 1 and 2 %, but the chemical composition is never published [2,[10][11][12][13][14]. Lubricants are added mainly to reduce friction forces during formation of the product, thus to obtain highly densified details and homogeneous density distribution [15,16].…”

Section: Resultsmentioning

confidence: 99%

Application of a device used for observation of controlled thermal processes in a furnace

Hebda

Laska

Szechyńska‐Hebda

2013

J Therm Anal Calorim

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This paper describes an appliance that allows to visually observe phenomena occurring in the studied materials during heating, from room temperature to 600°C. The design criteria and device construction are described in details. The device allows for visual observation of physical phenomena of various material types, e.g., organic matter, polymers, and even observation of sintering mechanisms. Analysis of lubricant evaporation from powder metals (an aluminum alloy) in different atmospheres is shown. The featured device can also be used for interpretation of material defects. This is presented on the example of heating the aluminum alloy in an atmosphere containing oxygen (to simulate a furnace leakage). In addition, the influence of experimental atmosphere on melting and sintering processes is demonstrated. Another application of the presented device can be the visual observation of differences between combustion and pyrolysis processes. Our results show that the presented device is complementary with an advanced thermoanalysis apparatus which, in turn, does not allow visual observation of samples.

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Section: Resultsmentioning

confidence: 99%

Application of a device used for observation of controlled thermal processes in a furnace

Hebda

Laska

Szechyńska‐Hebda

2013

J Therm Anal Calorim

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“…In an attempt to mitigate the deleterious effect of oxidation as well as ensuring good wetting and successful layer-by-layer consolidation in direct laser sintering of metals, various approaches have been adopted by SLM investigators: sintering in an inert atmosphere like argon, 41 neon, and nitrogen which renders the oxidation process inactive or slows it down; disruption of the surface oxide film by alloying addition; determining the optimal processing parameters that allows minimal balling; re-melting of the underlying substrate in order to break down the surface contaminants to ensure a clean surface at the atomic level between the solid and the liquid; and incorporation of fluxing additives [5,45,46,61,71,76,[81][82][83][84][85]. The objective of this section is to determine from the available literature, the possible effects of the SLS/SLM parameters and powder properties on the processing and densification phenomena of components produced from aluminium alloys.…”

Section: Densification Of Powdersmentioning

confidence: 99%

A review on selective laser sintering/melting (SLS/SLM) of aluminium alloy powders: Processing, microstructure, and properties

Olakanmi

Mullis

Dalgarno

2015

Progress in Materials Science

1,391

526

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“…Such a liquid can penetrate the oxide film through the discontinuities created during compaction, thus facilitating material transport and necks formation between particles [5]. Improvement in the sinterability and mechanical strength through LPS with trace addition of Pb, Sn, Se, Bi and Sb to Al alloys has been stated [10][11][12]. It has been shown that both 6xxx and 7xxx series Al powder mixture compacts exhibit higher sinterability in comparison to 2xxx series Al alloy compacts [5].…”

Section: Introductionmentioning

confidence: 99%

Sintering Behavior of Nanocrystalline Al6063 Powders Prepared by High-Energy Mechanical Milling

Asgharzadeh

2016

Trans Indian Inst Met

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Nanocrystalline Al6063 powders were synthesized by high-energy mechanical milling of gas-atomized powders for 22.5 h. The powders were uniaxially compacted at various compaction pressures ranging 200-1325 MPa and then were sintered at temperatures between 550 and 650°C for 1 h. The densification and microstructural evolutions during both solid phase sintering and supersolidus liquid phase sintering are studied. Ultrafine-grained (UFG) Al alloy compacts show superior sinterability compared with coarsegrained (CG) compacts due to the higher defect density and larger specific surface area of the mechanically-milled powders. The densification parameter and hardness of both CG and UFG Al6063 compacts enhances as the compaction pressure increases. Nevertheless, applying high compaction pressures has an adverse effect on the sintered density and results in the swelling of compacts. The results point out an optimum sintering temperature at *600°C for achieving the highest sintered density and hardness with minimal grain coarsening and slumping.

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The effect of trace elements on the sintering of an Al–Zn–Mg–Cu ALLOY

Cited by 60 publications

References 10 publications

Application of a device used for observation of controlled thermal processes in a furnace

Application of a device used for observation of controlled thermal processes in a furnace

A review on selective laser sintering/melting (SLS/SLM) of aluminium alloy powders: Processing, microstructure, and properties

Sintering Behavior of Nanocrystalline Al6063 Powders Prepared by High-Energy Mechanical Milling

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