A review on crucibles for induction melting of titanium alloys

Fashu, Simbarashe; Lototskyy, Mykhaylo; Davids, Moegamat Wafeeq; Pickering, Lydia; Linkov, Vladimir; Sun, Tai; Tang, Renheng; Xiao, Fang; Фурсиков, П. В.; Тарасов, Б. П.

doi:10.1016/j.matdes.2019.108295

Cited by 78 publications

(24 citation statements)

References 121 publications

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“…The temperature value for the AM samples is within the typical temperature window for most additively manufactured alloys and also depends on factors such as input laser power, hatch spacing, material type, and exposure time [43,44]. The low temperature range value is close to that reported for a variety of titanium-free alloys [45] For low temperature tests, all six alloys were synthesized using arc-melting ( Figure A21). This was also done in order to compare direct laser sintered alloys to the arc-melted samples.…”

Section: Effect Of Temperature (X-ray Diffraction Tests On Arc Meltedmentioning

confidence: 51%

Design and Fabrication of New High Entropy Alloys for Evaluating Titanium Replacements in Additive Manufacturing

et al. 2020

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High entropy alloys (HEAs) were prepared using the powder bed fusion (PBF) technique. Among titanium free alloys AlCoCrFeNiMn, CoCr1.3FeMnNi0.7, AlCoCrFeNi1.3, and AlCoCr1.3FeNi1.3 have been further investigated. A cost comparison was done for these four alloys as well as the titanium-based alloys AlCoCrFeNiTi and AlCo0.8CrFeNiTi. Such a comparison was done in order to evaluate the performance of the titanium-free alloys as the estimated cost of these will be less than for Ti-based HEAs. Hence, we have chosen four titanium free alloys and two titanium-based alloys for further processing. All these alloys were fabricated and subsequently characterized for phase, purity and performance. Scanning electron microscopy-based images were captured for microstructure characterization. EIS-based tests and potentiodynamic scans were performed to evaluate corrosion current. Hardness tests were performed for mechanical properties evaluation. Additional testing using factorial design tests was performed to evaluate the effects of various parameters to create better PBF-based HEA samples. EBSD tests, accelerated corrosion tests (mass loss), chemical analysis after degradation, microstructure analysis before and after degradation, and mechanical property comparison for finalized samples and other similar tests were executed. The details about all these HEAs and subsequent laser processing as well as behavior of these HEAs have been included in this study. It has been observed that some of the selected alloys exhibit good performance compared to Ti-based alloys, especially with respect to improvements in elastic constant and hardness relative to commercially pure Ti.

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Section: Effect Of Temperature (X-ray Diffraction Tests On Arc Meltedmentioning

confidence: 51%

Design and Fabrication of New High Entropy Alloys for Evaluating Titanium Replacements in Additive Manufacturing

et al. 2020

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“…This phenomenon prohibits further elevation of a spraying temperature for currently applied tundish material and utilized [Ti] content. Possible tundish material alternatives (e.g., ZrO2, Y2O3, BN, and so on) for [Ti]‐containing alloys were reviewed by Fashu et al [ 47 ] Herewith, the longest homogenization period of the Fe–TiC 1 experiment most likely induced elevated oxidation of Ti and thus a loss reduction of C in the powder (see Table 5). Therefore, the homogenization period after Ti addition prior to spraying should be maximally shortened as in the experiment Fe–TiC 3.…”

Section: Discussionmentioning

confidence: 99%

Manufacturing Fe–TiC Composite Powder via Inert Gas Atomization by Forming Reinforcement Phase In Situ

et al. 2020

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Metal matrix composites (MMCs) are materials that have a ductile matrix reinforced with a hard ceramic phase. This combination gives advanced mechanical and functional properties, such as high yield and tensile strength, modulus, and wear resistance. [1-4] Therefore, these materials are widely utilized in automotive, aerospace, medicine, and other high-tech industries. Traditionally, MMC materials are fabricated via the powder metallurgy route, where metal and ceramic powders are premixed and then sintered. [5] As the reinforcement phase, carbides, oxides, nitrides, and borides are normally implemented. Due to the rapid development of the additive manufacturing (AM) market, there is a demand for new materials that can be fabricated additively including MMCs. Moreover, MMCs are normally hard to machine adjusting a semiproduct to a final shape. Thus, manufacturing a nearnet-shape MMC product is an attractive solution, which can further promote the introduction of AM techniques. Dadbakhsh et al. [6] reviewed several attempts of MMC manufacturing via laser powder bed fusion (L-PBF) dealing with Al-, Ti-, and steel-based materials. Specifically, Yuan et al. [7] produced AlSi10Mg-5.8 vol% TiC composite material finding the optimal parameters for the sufficient distribution of the TiC-phase during a L-PBF process. Gu et al. [8] fabricated the Ti/TiC composite revealing a dependence of the reinforcement phase shape and its distribution in the matrix on the L-PBF process parameters and TiC content (up to 22.5 wt%). AlMangour et al. [9] investigated 316 L/TiC MMC with varying reinforcement phase content from 2.5 to 15 vol%. These examples describe the ex situ addition of the reinforcement phase to the matrix by mixing metal and TiC powders prior to the printing process. As an alternative, it is possible to fabricate the reinforcement phase in situ bringing needed elements in contact. Tjong et al. [10] summarized the benefits of in situ formation of the reinforcement phase: enhanced thermodynamic stability, strong interfacial bonding, sufficient reinforcement phase distribution, and refinement, which further improve the mechanical properties of MMC. In the recent years, the in situ approach for AM gained much attention among researches. [11-25] For instance, Promakhov et al. [24] produced Inconel 625/TiB 2 MMC material applying self-propagating high-temperature synthesis (SHS). Obtained blocks were grinded to a coarse powder and then plasma spheroidized yielding spherical particles with TiB 2 reinforcements of 0.5-5 μm size. Thereby, this powder was successfully utilized for test samples fabrication by direct laser deposition technique (DLD). AlMangour et al. [12] utilized for L-PBF mechanically alloyed composite powder. For this experiment, 316L-Ti-graphite mixed powders were milled for 35 h

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“…Once activated, they exhibit excellent hydrogenation/dehydrogenation kinetics and a good cycle stability [32,54]. Their components are less expensive than the ones used for the making of RE-based AB 5 's, but manufacturing of the AB 2 -type alloys experiences some metallurgical difficulties due to higher melting temperatures, high reactivity of the components and other factors [32,55]. When activated, the AB 2 -type alloys, particularly those ones which contain Zr and Mn, are highly pyrophoric; these materials are also more sensitive to impurities in H 2 than AB 5 's [32].…”

Section: Metal Hydride Materialsmentioning

confidence: 99%

Metal hydride hydrogen storage and compression systems for energy storage technologies

Тарасов

Фурсиков

Володин

et al. 2021

International Journal of Hydrogen Energy

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A review on crucibles for induction melting of titanium alloys

Cited by 78 publications

References 121 publications

Design and Fabrication of New High Entropy Alloys for Evaluating Titanium Replacements in Additive Manufacturing

Design and Fabrication of New High Entropy Alloys for Evaluating Titanium Replacements in Additive Manufacturing

Manufacturing Fe–TiC Composite Powder via Inert Gas Atomization by Forming Reinforcement Phase In Situ

Metal hydride hydrogen storage and compression systems for energy storage technologies

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