Effects of TiN nanoparticles on hot deformation behavior of ultra-fine grained Al2024-TiN nanocomposites prepared by spark plasma sintering

AbstractThe cylindrical samples of TC4 titanium alloy prepared by spark plasma sintering (SPS) were compressed with hot deformation of 70% on the thermosimulation machine of Gleeble-1500. The temperature of the processes ranged from 850°C to 1,050°C, and the strain rates varied between 0.001 and 5 s−1. The relative density of the sintered and compressed samples was measured by the Archimedes principle. During hot deformation, the microstructure of the sample was observed. The results show that the average relative density of the samples was 90.2% after SPS. And the relative density was about 98% after the hot deformation of 70%. Under high temperature (>950°C), the sensitivity of flow stress to temperature was reduced. At low strain rate (0.001 s−1), the increase in the deformation temperature promoted the growth of dynamic recrystallization (DRX). At the same temperature, the increase in strain rate slowed down the growth of DRX grains. And the variation tendency was shown from the basket-weave structure to the Widmanstätten structure at a low strain rate (<0.1 s−1), with increase in the strain rate.

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Superplasticity of fine-grained alumina obtained by spark plasma sintering

Journal of Physics Conference Series ◽

10.1088/1742-6596/1758/1/012031 ◽

2021 ◽

Vol 1758 (1) ◽

pp. 012031

Author(s):

A A Popov ◽

V N Chuvil’deev ◽

M S Boldin ◽

A V Nokhrin ◽

E A Lantsev ◽

...

Keyword(s):

Spark Plasma Sintering ◽

Fine Grained ◽

Plasma Sintering ◽

Spark Plasma

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Microstructure of Cu-TiB2 Nanocomposite during Spark Plasma Sintering

Materials Science Forum ◽

10.4028/www.scientific.net/msf.449-452.1113 ◽

2004 ◽

Vol 449-452 ◽

pp. 1113-1116 ◽

Cited By ~ 4

Author(s):

Young Soon Kwon ◽

Ji Soon Kim ◽

Jong Jae Park ◽

Hwan Tae Kim ◽

Dina V. Dudina

Keyword(s):

Spark Plasma Sintering ◽

Titanium Diboride ◽

Copper Matrix ◽

Microstructural Change ◽

Simultaneous Action ◽

Fine Grained ◽

Pulse Electric Current ◽

Plasma Sintering ◽

Spark Plasma ◽

Pulse Electric

Microstructural change of TiB2-Cu nanocomposite during spark plasma sintering (SPS) was investigated. Under simultaneous action of pressure, temperature and pulse electric current titanium diboride nanoparticles distributed in copper matrix move, agglomerate and form a interpenetrating phase composite with a fine-grained skeleton. Increase of SPS temperatures and holding times promotes the densification of sintered compacts due to local melting of copper matrix.

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Dielectric properties of fine-grained BaTiO3 prepared by spark-plasma-sintering

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2003.08.009 ◽

2004 ◽

Vol 83 (1) ◽

pp. 23-28 ◽

Cited By ~ 63

Author(s):

Baorang Li ◽

Xiaohui Wang ◽

Longtu Li ◽

Hui Zhou ◽

Xingtao Liu ◽

...

Keyword(s):

Dielectric Properties ◽

Spark Plasma Sintering ◽

Fine Grained ◽

Plasma Sintering ◽

Spark Plasma

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High-temperature mechanical properties and deformation behavior of high Nb containing TiAl alloys fabricated by spark plasma sintering

International Journal of Minerals Metallurgy and Materials ◽

10.1007/s12613-012-0563-9 ◽

2012 ◽

Vol 19 (4) ◽

pp. 354-359 ◽

Cited By ~ 9

Author(s):

Xin Lu ◽

Li-hua Zhao ◽

Lang-ping Zhu ◽

Bin Zhang ◽

Xuan-hui Qu

Keyword(s):

Mechanical Properties ◽

High Temperature ◽

Spark Plasma Sintering ◽

Deformation Behavior ◽

Tial Alloys ◽

High Temperature Mechanical Properties ◽

Plasma Sintering ◽

Spark Plasma

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Multi-pass Hot Deformation Behavior and Microstructure Evolution of Spark Plasma-Sintered Ti-6Al-4V Alloy

Journal of Materials Engineering and Performance ◽

10.1007/s11665-021-06028-0 ◽

2021 ◽

Author(s):

Yong Xue ◽

Jishi Zhang ◽

Haijun Liu ◽

Zhaoming Yan ◽

Hongyue Zhao ◽

...

Keyword(s):

Microstructure Evolution ◽

Hot Deformation ◽

Deformation Behavior ◽

Hot Deformation Behavior ◽

Spark Plasma

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Mechanical Milling-Assisted Spark Plasma Sintering of Fine-Grained W-Ni-Mn Alloy

Materials ◽

10.3390/ma11081323 ◽

2018 ◽

Vol 11 (8) ◽

pp. 1323 ◽

Cited By ~ 1

Author(s):

Yanlin Pan ◽

Daoping Xiang ◽

Ning Wang ◽

Hui Li ◽

Zhishuai Fan

Keyword(s):

Spark Plasma Sintering ◽

Mechanical Milling ◽

Bending Strength ◽

Sintering Temperature ◽

Interface Fracture ◽

Composite Powders ◽

Fine Grained ◽

Plasma Sintering ◽

Binding Phase ◽

Spark Plasma

Fine-grained W-6Ni-4Mn alloys were fabricated by spark plasma sintering (SPS) using mechanical milling W, Ni and Mn composite powders. The relative density of W-6Ni-4Mn alloy increases from 71.56% to 99.60% when it is sintered at a low temperature range of 1000–1200 °C for 3 min. The spark plasma sintering process of the alloy can be divided into three stages, which clarify the densification process of powder compacts. As the sintering temperature increases, the average W grain size increases but remains at less than 7 µm and the distribution of the binding phase is uniform. Transmission electron microscopy (TEM) observation reveals that the W-6Ni-4Mn alloy consists of the tungsten phase and the γ-(Ni, Mn, W) binding phase. As the sintering temperature increases, the Rockwell hardness and bending strength of alloys initially increases and then decreases. The optimum comprehensive hardness and bending strength of the alloy are obtained at 1150 °C. The main fracture mode of the alloys is W/W interface fracture.

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