Effect of heating mode and sintering temperature on the consolidation of 90W–7Ni–3Fe alloys

Mondal, Avijit; Upadhyaya, Anish; Agrawal, Dinesh Kumar

doi:10.1016/j.jallcom.2010.09.008

Cited by 61 publications

(22 citation statements)

References 35 publications

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“…The W-Ni-Me (e.g. W-Ni-Fe, W-Ni-Cu, W-Ni-Co, and W-Ni-Mn) series alloys are widely used in war industry, spaceflight, and nuke industry [7][8][9][10][11]. In our earlier works [12][13][14], the W-Ni-Cu alloy and W-Ni-Co alloy prepared by liquid phase sintering and two-step sintering have been investigated.…”

Section: Introductionmentioning

confidence: 99%

Study on substitution of Ni with Ni₃Al on structure and properties of W–6Ni₃Al–4Co alloys by two-step sintering process

Dong

et al. 2020

Mater. Res. Express

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Herein, the effect of substitution of Ni with Ni 3 Al and two-step sintering on the phase transformation, microstructure evolution, and properties of W-6Ni-4Co alloys were evaluated. The results show that the reaction products of Ni 3 Al and Co include (Ni, Co) 3 Al 4 to Co 2 Al 9 during the two-step sintering process. When Ni was substituted by Ni 3 Al, the densification temperature was reduced. The distribution of W phase turned from stripes to network, and the grain size increased with an increase in the sintering temperature. The Ni 3 Al substituted sample sintered at 1500°C for 20 min displayed a combination of high densification parameter, microhardness, and strength because of denser microstructure of the alloy.

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Section: Introductionmentioning

confidence: 99%

Study on substitution of Ni with Ni₃Al on structure and properties of W–6Ni₃Al–4Co alloys by two-step sintering process

Dong

et al. 2020

Mater. Res. Express

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“…Breval et al, Mondal et al, and Anklekar prepared WC/Co alloy, 90W-7Ni-3Fe alloy, and PM copper steel by microwave sintering, respectively. It was found that microwave sintering resulted in mechanical properties than conventional sintering [ 11 , 12 , 13 ]. Chandrasekaran et al investigated the melting behavior of metals, such as Pb, Sn, Al, and Cu in the microwave field.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Cu Based Metallic Binder for Diamond Tools by Microwave Pressureless Sintering

Guo

Wang

et al. 2018

Materials

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Microwave pressureless sintering (MPS) method is successfully applied in the fabrication of Cu based metallic matrix for diamond tools. The main purpose of this work is to obtain better mechanical properties when the metal binder of the diamond tools was prepared by the MPS method. The orthogonal experimental method is adopted to design the sintering process parameters. The optimized experimental conditions are suggested as 880 °C of sintering temperature, 375 MPa of cold pressure, and 35 min of withholding time. The contrastive investigation of the MPS and conventional pressureless sintering (CPS) are performed under optimized conditions. The microstructures information are obtained by scanning electron microscopy (SEM), X-ray diffraction (XRD), electron probe microanalysis (EPMA), and the necessary mechanical properties, such as relative density, hardness, and flexural strength are tested. Experimental results show that the MPS method, compared with CPS, can significantly improve the mechanical properties of the metallic matrix. The factors of relative density, hardness, and flexural strength increase 1.25%, 3.86%, and 6.28%, respectively. The possible sintering mechanism of the MPS method is also discussed. This work may provide a reference for the fabrication of metal-based diamond tools by microwave heating method.

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“…So that the results can contribute directly to the achievement of a new tungsten composite-lignin [7] and which can be used in attenuation of gamma radiation and possibly in the making of a device for the carriage of radioactive material and radiopharmaceuticals used in hospitals for diagnosis and cancer therapy [8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the microstructural evolution of composite of Tungsten with lignin kraft

Souza¹,

Rossi²,

Fernandes³

et al. 2017

Blucher Physics Proceedings

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In materials science and engineering, there is a demand in new materials for radiation shielding in the transport of radiopharmaceuticals used in the diagnosis and therapy of cancer, justifying the interest in developing this work. The obtained lignin kraft and tungsten form the precursors used for metal-organic composite. Tungsten metal has diverse applications in the nuclear sector presents an enormous mechanical strength and an excellent cross section with thermal neutrons. The aim of this study is to analyse the microstructural evolution of metal-organic composite using the kraft lignin and tungsten, using analysis of scanning electron microscopy (SEM), microhardness test and x-ray diffraction (XRD). Microscopic analysis showed the granulometry of the precursors separate and composite morphology, observing the formation of alpha (α) and beta (β) phases and absence of oxidation process for different heat treatment temperatures. The spectra of x-ray diffraction identified the structures of each phase formed and micro hardness measures showed an increase of mechanical resistance with temperature. The results of the microstructural characterization of metal-organic composite, will contribute in the next steps of attenuation measurements of gamma radiation.Keywords: Tungsten; Composite; Lignin Kraft. ResumoNa ciência dos materiais e na engenharia, há uma demanda em novos materiais para proteção contra radiação no transporte de radiofármacos utilizados no diagnóstico e terapia do câncer, justificando o interesse em desenvolver este trabalho. A lignina kraft obtida e o tungstênio formam os precursores utilizados para o composto metal-orgânico. O metal de tungstênio tem diversas aplicações no setor nuclear, apresenta uma enorme resistência mecânica e uma excelente seção transversal com neutrons térmicos. O objetivo deste estudo é analisar a evolução microestrutural do composto metal-orgânico utilizando a lignina kraft e tungstênio, utilizando análise de microscopia eletrônica de varredura (SEM), teste de micro dureza e difração de raios X (XRD). A análise microscópica mostrou a granulometria dos precursores separada e morfologia compósita, observando a formação de fases alfa (α) e beta (β) e ausência de processo de oxidação para diferentes temperaturas de tratamento térmico. Os espectros de difração de raios X identificaram as estruturas de cada fase formada e as medidas de micro dureza mostraram um aumento da resistência mecânica com a temperatura. Os resultados da caracterização microestrutural de compostos metálicos e orgânicos contribuirão nos próximos passos das medidas de atenuação da radiação gama.

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Effect of heating mode and sintering temperature on the consolidation of 90W–7Ni–3Fe alloys

Cited by 61 publications

References 35 publications

Study on substitution of Ni with Ni₃Al on structure and properties of W–6Ni₃Al–4Co alloys by two-step sintering process

Study on substitution of Ni with Ni₃Al on structure and properties of W–6Ni₃Al–4Co alloys by two-step sintering process

Fabrication of Cu Based Metallic Binder for Diamond Tools by Microwave Pressureless Sintering

Analysis of the microstructural evolution of composite of Tungsten with lignin kraft

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Effect of heating mode and sintering temperature on the consolidation of 90W–7Ni–3Fe alloys

Cited by 61 publications

References 35 publications

Study on substitution of Ni with Ni3Al on structure and properties of W–6Ni3Al–4Co alloys by two-step sintering process

Study on substitution of Ni with Ni3Al on structure and properties of W–6Ni3Al–4Co alloys by two-step sintering process

Fabrication of Cu Based Metallic Binder for Diamond Tools by Microwave Pressureless Sintering

Analysis of the microstructural evolution of composite of Tungsten with lignin kraft

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Study on substitution of Ni with Ni₃Al on structure and properties of W–6Ni₃Al–4Co alloys by two-step sintering process

Study on substitution of Ni with Ni₃Al on structure and properties of W–6Ni₃Al–4Co alloys by two-step sintering process