Microstructural development and its mechanism of mechanical alloyed nanocrystalline W–10Ni alloy reinforced with Y2O3 nanoparticles

Gu, Dongdong; Li, Yali; Wang, Hongqiao; Jia, Qingbo; Zhang, Guoquan

doi:10.1016/j.ijrmhm.2014.01.018

Cited by 12 publications

(2 citation statements)

References 31 publications

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“…The W-based alloys present superior properties including high strength, high radiation absorption and good corrosion resistance, proving suitable for many industrial applications including radiation shields, vibrating masses and counterweights [1][2][3]. In the W-based alloys, the W-Ni alloys are common engineering materials due to good intersolubility of Ni with W [4]. Adversely, a brittle Ni 4 W phase can be easily generated because of uncontrollable solubility of W in Ni melts during liquid phase sintering, weakening the toughness of W-Ni alloys [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Microstructure of W-6Ni-4Co Alloy by a Two-Step Sintering Process

Dong

et al. 2019

Metals

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The mechanical properties and microstructure of W-6Ni-4Co alloy through solid phase sintering and two-step sintering process were investigated. The results demonstrated that the particle sizes of W-6Ni-4Co alloy milled powders increased firstly and decreased later during a mechanical alloying process. The shape of alloy milled powders affected that of grains in alloy by solid phase sintering. The shape of W-rich particles in the alloys changed from stripes to network, to polygonal and to subsphaeroidal finally during two-step sintering process. The mechanical properties could be attributed to the densification and microstructure of alloys, and increased during two-step sintering with short dwelling time.

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Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Microstructure of W-6Ni-4Co Alloy by a Two-Step Sintering Process

Dong

et al. 2019

Metals

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“…To address this issue, rare earth (RE) elements, which have high affinity toward O and impurities, can be used to prevent the oxidation of Hf. RE-doped W alloys possess notable characteristics, such as high-temperature strength and wear properties, and they demonstrate high performance in purifying the matrix and pinning the grain boundary [ 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and High-Temperature Ablation Behaviour of Hafnium-Doped Tungsten-Yttrium Alloys

Huang

Zhang

et al. 2023

Materials

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W is a widely used refractory metal with ultra-high melting point up to 3410 °C. However, its applications are limited by poor ablation resistance under high-temperature flame and air flow, which is crucial for aerospace vehicles. To improve the ablation resistance of W under extreme conditions, W-Y alloys doped with different Hf mass fractions (0, 10, 20, and 30) were prepared using the fast hot pressing sintering method. Microstructure and ablation behaviours at 2000 °C were investigated. Results showed that adding an appropriate amount of Hf improved the properties of the W-Y alloy evidently. In particular, the hardness of the alloy increased with the increased content of Hf. The formation of the HfO2 layer on the surface during ablation decreased the mass and linear ablation rates, indicating enhanced ablation resistance. However, excessive Hf addition will result in crack behaviour during ablation. With a Hf content of 20 wt.%, the alloy exhibited high stability and an excellent ablation resistance.

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Sintering densification behaviors and microstructural evolvement of W-Cu-Ni composite fabricated by selective laser sintering

Yan

Wang

Yang

et al. 2016

Int J Adv Manuf Technol

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Microstructural development and its mechanism of mechanical alloyed nanocrystalline W–10Ni alloy reinforced with Y2O3 nanoparticles

Cited by 12 publications

References 31 publications

Mechanical Properties and Microstructure of W-6Ni-4Co Alloy by a Two-Step Sintering Process

Mechanical Properties and Microstructure of W-6Ni-4Co Alloy by a Two-Step Sintering Process

Microstructure and High-Temperature Ablation Behaviour of Hafnium-Doped Tungsten-Yttrium Alloys

Sintering densification behaviors and microstructural evolvement of W-Cu-Ni composite fabricated by selective laser sintering

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