Characterization and formation mechanism of nanocrystalline W–Al alloy prepared by mechanical alloying

Rafiei, Mahdi; Khademzadeh, Saeed; Parvin, Nader

doi:10.1016/j.jallcom.2009.09.056

Cited by 21 publications

(9 citation statements)

References 15 publications

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“…Then, powder particles undergo work hardening and in the last phase, particles are fragmented. Previous studies reported a slight increase in the powder dimension with the effect of cold welding taking place in the first stage of the mechanical alloying process [29][30][31]. Therefore, titanium powder particles in the matrix can be combined together during mechanical alloying and form coarse grains.…”

Section: Methodsmentioning

confidence: 99%

Wear Behaviour of A356/TiAl3 in Situ Composites Produced by Mechanical Alloying

Çam

Demir

Özyürek

2016

Metals

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Abstract:In this study, the effects of in situ TiAl 3 particles on dry sliding wear behavior of A356 aluminum alloy (added Ti) composites were investigated. The wear samples were prepared by adding different amounts of Ti (4%, 6%, and 8%) into A356 powder alloy by mechanical alloying. The mechanically alloyed powders were cold pressed at 600 MPa and sintered 530˝C for 1 h in argon atmosphere and cooled in the furnace. After the sintering process, the samples were characterized. The results show that AlTi and TiAl 3 intermetallic phases were formed and their amount increased depending on the amount of Ti added into A356 powder alloy. Out of the samples sintered with different titanium amounts (1 h at 530˝C), the highest hardness value and, accordingly, the lowest wear amount, were observed in the alloy containing 8% Ti.

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Section: Methodsmentioning

confidence: 99%

Wear Behaviour of A356/TiAl3 in Situ Composites Produced by Mechanical Alloying

Çam

Demir

Özyürek

2016

Metals

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“…Contamination could be introduced from the high-energy ball milling procedure, a homogeneous dispersion of nanometer-scaled particles within the matrix cannot be easily achieved due to nanoparticles generally have an extremely large specific surface area and attendant enhanced kinetics of aggregation [11,12]. Moreover, whether or not the alloying element could be fully dissolved into the matrix, and the kinds of additive, such as Cu and Al [13,14], can exert significant influence on the morphological evolution of matrix powders during the milling process.…”

Section: Introductionmentioning

confidence: 99%

Effects of ball milling parameters on microstructural evolution and mechanical properties of W-3% Y composites

Zhao

Zhou

Tan

et al. 2015

Journal of Nuclear Materials

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“…MA is a suitable technique for the development of metal matrix composite (MMC) materials with superior properties [1,2]. By using this process, very fine reinforcement particles (of nano-scale) were homogeneously distributed within the metal matrix.…”

Section: Introductionmentioning

confidence: 99%