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Luo, Yuzhou; Li, D. Y.

doi:10.1023/a:1017962601833

Cited by 23 publications

(9 citation statements)

References 13 publications

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“…where Dq is the difference between the liquid and gas densities, S ¼ pd 2 h , where d h is the diameter projected on the horizontal plane circle and V ¼ pd 3 e =6. Equation (5) can be rewritten as…”

Section: -5mentioning

confidence: 99%

“…2 In the MMNCs, the strength and ductility are provided by metal matrix and the strength and stiffness are provided by the reinforcement of nanomaterials. Nanomaterials have been introduced into metal matrix by several methods, such as vacuum sintering, 3 mechanochemical method, 4 laser sintering, 5 and ball milling. 6 The first discover of carbon nanotube (CNT) was by Iijima in 1991.…”

Section: Introductionmentioning

confidence: 99%

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Laser sintering of separated and uniformly distributed multiwall carbon nanotubes integrated iron nanocomposites

Lin

Liu

Cheng

2014

Journal of Applied Physics

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Uniform distribution of carbon nanotubes (CNTs) in metal matrix during additive manufacturing of nanocomposites is always a challenge since the CNTs tend to aggregate in the molten pool. In this study, Multiwall carbon nanotubes (MWNTs) were separated and distributed uniformly into iron matrix by laser sintering process. MWNTs and iron powders were mixed together by magnetic stir, coated on steel 4140 surface, followed by laser sintering. Due to the fast heating and cooling rate, the CNTs are evenly distributed in the metal matrix. The temperature field was calculated by multiphysics simulation considering size effects, including size dependent melting temperature, thermal conductivity, and heat capacity. The SEM, TEM, and XRD were used to understand the laser sintering of CNT integrated nanocomposites. The results proved the feasibility of this technique to synthesize MWNTS integrated metal matrix nanocomposites. V

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Section: -5mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Laser sintering of separated and uniformly distributed multiwall carbon nanotubes integrated iron nanocomposites

Lin

Liu

Cheng

2014

Journal of Applied Physics

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“…A bulk Ni-Timaterial with refined microstructure was obtained by spark plasma sintering (SPS) starting from amorphous mechanically alloyed NiTi powders [9].It has also been made to develop TiNi matrix composites to further increase the wear resistance. The reinforcing phases include TiC [10], TiN [11] and precipitated Ti 2 Ni [12], it is considered that the hard reinforcing phases can be used to sustain external load, while the TiNi matrix may accommodate deformation, absorb impact energy and retain hard particles. Carbon nanotubes (CNTs) are considered to be the most effective reinforcement in metalmatrix composites for structural applications [13], [14], [15], [16], [17], [18], [19], [20] and [21] due to their extraordinary mechanical, thermal, and electrical properties and high aspect ratios.…”

Section: Introductionmentioning

confidence: 99%

Single walled carbon nanotubes reinforced intermetallic TiNi matrix nanocomposites by spark plasma sintering

Bendjemil

Ali-Rachedi

Bougdira

et al. 2017

Theo. NANOTECHNOLOGY

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We report the processing of single walled carbon nanotubes (SWCNTs) reinforced TiNi intermetallic matrix nanocomposites from Ti/Ni and SWCNTs powders using spark plasma sintering (SPS) at temperatures from 1000 °C to 1200 °C. The SWCNTs are doped into the TiNi matrix from 0.0 to 1.0 wt%. The effect of SWCNTs reinforcement contents on the relative density, phases, microstructure and microhardness of TiNi intermetallics matrix andCNTs/TiC/TiNi nanocomposites are studied. The experimental results show that the TiNi sintered at T= 1200 °C reinforced with 0.8 wt% SWCNTs has the highest Vicker’s microhardness and relative density, which were HV 5.29 GPa and 96%, respectively. That can be explained by the precipitation of TiC and Ti2Ni in the matrix.This study explores the possibility of developing novel TiNi matrix nanocomposites with shape memory effect and biocompatibility.

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“…% SiC nanoparticles dispersed as reinforcement material. 12 Nanoparticles have been also introduced into metal matrix by several other methods, such as vacuum sintering, 13 mechanochemical method, 14 laser cladding, 15 and ball milling. 16 In this paper, a hybrid surface treatment combining laser sintering (LS) and laser shock peening is applied to introduce nanocomposite surface layer and improve mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Mechanism of fatigue performance enhancement in a laser sintered superhard nanoparticles reinforced nanocomposite followed by laser shock peening

Lin

Liao

et al. 2013

Journal of Applied Physics

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This study investigates the fundamental mechanism of fatigue performance enhancement during a novel hybrid manufacturing process, which combines laser sintering of superhard nanoparticles integrated nanocomposites and laser shock peening (LSP). Through laser sintering, TiN nanoparticles are integrated uniformly into iron matrix to form a nanocomposite layer near the surface of AISI4140 steel. LSP is then performed on the nanocomposite layer to generate interaction between nanoparticles and shock waves. The fundamental mechanism of fatigue performance enhancement is discussed in this paper. During laser shock interaction with the nanocomposites, the existence of nanoparticles increases the dislocation density and also helps to pin the dislocation movement. As a result, both dislocation density and residual stress are stabilized, which is beneficial for fatigue performance. V

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Cited by 23 publications

References 13 publications

Laser sintering of separated and uniformly distributed multiwall carbon nanotubes integrated iron nanocomposites

Laser sintering of separated and uniformly distributed multiwall carbon nanotubes integrated iron nanocomposites

Single walled carbon nanotubes reinforced intermetallic TiNi matrix nanocomposites by spark plasma sintering

Mechanism of fatigue performance enhancement in a laser sintered superhard nanoparticles reinforced nanocomposite followed by laser shock peening

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