Improvement in the Mechanical Behavior of Mechanically Alloyed Aluminum Using Short-Time NH3 Flow

Caballero, Eduardo Sánchez; Cintas, J.; Cuevas, F. G.; Montes, J. M.; Herrera-García, M.

doi:10.1007/s11661-016-3769-z

Cited by 2 publications

(2 citation statements)

References 22 publications

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“…In addition, after conventional consolidation by uniaxial pressing and furnace sintering the hardness of pure aluminium can decrease to 80 HV [16], mainly because of the grain growth. It is also possible to increase the hardness of conventionally consolidated pure Al compacts to about 180 HV by milling the powder in an atmosphere of ammonia [17,18]. Apart from grain refining, ammonia causes the formation of nitrogen-rich compounds that produce dispersion hardening.…”

Section: Hardness Of Al-ti Alloysmentioning

confidence: 99%

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Amorphous Al-Ti Powders Prepared by Mechanical Alloying and Consolidated by Electrical Resistance Sintering

Urban

Fernández

Caballero

et al. 2019

Metals

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A novel processing method for amorphous Al50Ti50 alloy, obtained by mechanical alloying and subsequently consolidated by electrical resistance sintering, has been investigated. The characterisation of the powders and the confirmation of the presence of amorphous phase have been carried out by laser diffraction, scanning electron microscopy, X-ray diffraction, differential scanning calorimetry and transmission electron microscopy. The amorphous Al50Ti50 powders, milled for 75 h, have a high hardness and small plastic deformation capacity, not being possible to achieve green compacts for conventional sintering. Moreover, conventional sintering takes a long time, being not possible to avoid crystallisation. Amorphous powders have been consolidated by electrical resistance sintering. Electrically sintered compacts with different current intensities (7–8 kA) and processing times (0.8–1.6 s) show a porosity between 16.5 and 20%. The highest Vickers hardness of 662 HV is reached in the centre of an electrically sintered compact with 8 kA and 1.2 s from amorphous Al50Ti50 powder. The hardness results are compared with the values found in the literature.

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Section: Hardness Of Al-ti Alloysmentioning

confidence: 99%

“…Hardness of aluminium, titanium and Al 50 Ti 50 alloys according to bibliographic data[15][16][17][18][19][20][21][22][23][24][25][26][27][28].…”

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confidence: 99%

Amorphous Al-Ti Powders Prepared by Mechanical Alloying and Consolidated by Electrical Resistance Sintering

Urban

Fernández

Caballero

et al. 2019

Metals

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Nanopore-confined g-C₃N₄nanodots in N, S co-doped hollow porous carbon with boosted capacity for lithium–sulfur batteries

et al. 2018

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Improvement in the Mechanical Behavior of Mechanically Alloyed Aluminum Using Short-Time NH3 Flow

Cited by 2 publications

References 22 publications

Amorphous Al-Ti Powders Prepared by Mechanical Alloying and Consolidated by Electrical Resistance Sintering

Amorphous Al-Ti Powders Prepared by Mechanical Alloying and Consolidated by Electrical Resistance Sintering

Nanopore-confined g-C₃N₄nanodots in N, S co-doped hollow porous carbon with boosted capacity for lithium–sulfur batteries

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Improvement in the Mechanical Behavior of Mechanically Alloyed Aluminum Using Short-Time NH3 Flow

Cited by 2 publications

References 22 publications

Amorphous Al-Ti Powders Prepared by Mechanical Alloying and Consolidated by Electrical Resistance Sintering

Amorphous Al-Ti Powders Prepared by Mechanical Alloying and Consolidated by Electrical Resistance Sintering

Nanopore-confined g-C3N4nanodots in N, S co-doped hollow porous carbon with boosted capacity for lithium–sulfur batteries

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Nanopore-confined g-C₃N₄nanodots in N, S co-doped hollow porous carbon with boosted capacity for lithium–sulfur batteries