Densification behavior of tungsten-fiber-reinforced copper powder compacts under hot isostatic pressing

Kim, H.G.; Kim, K.T.

doi:10.1016/s0020-7403(99)00060-0

Cited by 13 publications

(3 citation statements)

References 18 publications

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“…The second-phase doping and sintering conditions are the two key factors to control the grain size growth of W during the sintering process. The sinter ing methods include hot isostatic pressing sintering [39,40], resistance sintering under ultrahigh pressure sintering [41,42], spark plasma sintering (SPS) [7,[43][44][45][46][47] and microwave sintering [48][49][50].…”

Section: Nuclear Fusionmentioning

confidence: 99%

Ultrafine-grained W alloy prepared by spark plasma sintering with high thermal stability and excellent irradiation resistance

Zhou

Liu

et al. 2020

Nucl. Fusion

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Ultrafine-grained W-5wt.% Cr-5wt.% Y (W5C5Y) alloy was prepared by the spark plasma sintering method. Investigation of the microstructure showed that the grain growth was suppressed by the addition of Cr and Y. They not only enhance the density of sintered materials, but also purify and strengthen the grain boundaries through the second-phase particles formed by the reaction with free O. Ultrafine-grained W5C5Y exhibits ultrahigh hardness, which is much higher than that of ITER-grade W. It also shows high thermal stability even at the annealing temperatures of 1000 °C and 1100 °C, and exhibits higher irradiation resistance compared with ITER-grade W.

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Section: Nuclear Fusionmentioning

confidence: 99%

Ultrafine-grained W alloy prepared by spark plasma sintering with high thermal stability and excellent irradiation resistance

Zhou

Liu

et al. 2020

Nucl. Fusion

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“…Metal matrix composites are generally formed by the reasonable combination of one material as the matrix and the other material as the reinforcing phase, so they often have better properties than the single materials. Therefore, in recent years, many countries began to study composite armor-piercing projectiles to improve their penetration ability [ 6 , 7 , 8 ]. Because tungsten has the advantages of high density and high melting point (3410 °C), it is often used to prepare armor-piercing projectiles [ 9 , 10 , 11 , 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution Mechanism of Wf/Cu82Al10Fe4Ni4 Composites under Dynamic Compression at Different Temperatures and Strain Rates

Zhang

Jiang

et al. 2021

Materials

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Wf/Cu82Al10Fe4Ni4 composites were fabricated by the pressure infiltration method. The composites were compressed by means of a split Hopkinson pressure bar (SHPB) with strain rates of 800 and 1600 s−1 at different temperatures. The microstructure of the composites after dynamic compressing was analyzed by transmission electron microscopy (TEM). Observation revealed that there were high-density dislocations, stacking faults, twins, and recrystallization existing in the copper alloy matrix of the composites. High-density dislocations, stacking faults, and twins were generated due to the significant plastic deformation of the copper alloy matrix under dynamic load impact. We also found that the precipitated phase of the matrix played a role in the second phase strengthening; recrystallized microstructures of copper alloy were generated due to dynamic recrystallization of the copper alloy matrix under dynamic compression at high temperatures.

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“…Composites are composed of two or more kinds of materials reasonably, so they often possess better performance than a single material. Therefore, many countries start to do research in composites' projectile in recent years [5][6][7] . Tungsten fibers, which possess the advantages of high density and high melting point, were formed by drawing the massive tungsten at high temperature [8][9][10][11][12][13] .…”

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confidence: 99%

Micro-damage of Tungsten Fiber Reinforced Copper Matrix Composites under Hypervelocity Impact

Yang

2016

Rare Metal Materials and Engineering

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Wf/Cu78Al10Fe6Ni6 composite was fabricated from Cu78Al10Fe6Ni6 alloy and tungsten fiber by infiltration casting. Wf/Cu78Al10Fe6Ni6 composite hypervelocity projectile impacted concrete target at the speed of 2.4 km/s by a two-stage light gas gun. Microstructure of the residual projectiles after penetration was observed with transmission electron microscope (TEM). Results show that due the effect of high temperature and pressure during the process of penetration, there are different microstructures in different zones of the residual projectiles, i.e. amorphous microstructures, recrystallization microstructures, twins, and dislocations in the order from warhead to afterbody. Matrix copper alloy melts and then rapidly solidifies owing to high temperature produced by projectiles during the process of impact, and thus amorphous microstructures are generated. Recrystallization microstructures are generated because of rotational dynamic recrystallization of copper matrix. Twins and high-density dislocations are generated due to serious plastic deformation of projectiles under large dynamic loads in the process of penetration.

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Densification behavior of tungsten-fiber-reinforced copper powder compacts under hot isostatic pressing

Cited by 13 publications

References 18 publications

Ultrafine-grained W alloy prepared by spark plasma sintering with high thermal stability and excellent irradiation resistance

Ultrafine-grained W alloy prepared by spark plasma sintering with high thermal stability and excellent irradiation resistance

Microstructure Evolution Mechanism of Wf/Cu82Al10Fe4Ni4 Composites under Dynamic Compression at Different Temperatures and Strain Rates

Micro-damage of Tungsten Fiber Reinforced Copper Matrix Composites under Hypervelocity Impact

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