Combination of reaction synthesis and Spark Plasma Sintering in production of Ti-Al-Si alloys

Knaislová, Anna; Novák, Pavel; Cabibbo, Marcello; Průša, Filip; Paoletti, Chiara; Jaworska, L.; Vojtěch, Dalibor

doi:10.1016/j.jallcom.2018.04.187

Cited by 28 publications

(20 citation statements)

References 24 publications

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“…The phase composition of TiAl10Si20 alloy processed by both the arc melting and the MA + SPS is in good agreement with the equilibrium phase diagram of Ti-Al-Si ternary system [31,33]. The same results were obtained by reactive sintering followed by spark plasma sintering (RS + SPS) described in our previous article [26]. Another titanium silicide, TiSi, was found in the TiAl10Si30 alloy due to the higher amount of silicon in the alloy.…”

Section: Discussionsupporting

confidence: 82%

“…Another titanium silicide, TiSi, was found in the TiAl10Si30 alloy due to the higher amount of silicon in the alloy. Formation of TiSi corresponds to the equilibrium phase diagram [33] and this titanium silicide was also found in the TiAl10Si30 alloy prepared by RS + SPS [26]. As-cast TiAl15Si15 alloy has the same phase composition as in the equilibrium phase diagram, but the alloy prepared by MA + SPS contains a small amount of Ti 2 Al phase.…”

Section: Discussionmentioning

confidence: 87%

“…%)) were prepared by melting metallurgy in the arc melting furnace Bühler MAM-5 in the Institute of Physics of the Czech Academy of Sciences. These compositions have been chosen according to our previous research [26]. The pieces of individual elements (purity 99.95%) were four times re-melted under the argon atmosphere.…”

Section: Methodsmentioning

confidence: 99%

“…Other problems include the contamination of the melt from the reaction with the atmosphere in the furnace [12]. The Ti-Al-Si alloys have very poor fluidity, so the alloy has many casting defects after casting, for example, pores and cracks in the structure [26,27].…”

Section: Introductionmentioning

confidence: 99%

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Properties Comparison of Ti-Al-Si Alloys Produced by Various Metallurgy Methods

et al. 2019

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Melting metallurgy is still the most frequently used and simplest method for the processing of metallic materials. Some of the materials (especially intermetallics) are very difficult to prepare by this method due to the high melting points, poor fluidity, or formation of cracks and pores after casting. This article describes the processing of Ti-Al-Si alloys by arc melting, and shows the microstructure, phase composition, hardness, fracture toughness, and compression tests of these alloys. These results are compared with the same alloys prepared by powder metallurgy by the means of a combination of mechanical alloying and spark plasma sintering. Ti-Al-Si alloys processed by melting metallurgy are characterized by a very coarse structure with central porosity. The phase composition is formed by titanium aluminides and titanium silicides, which are full of cracks. Ti-Al-Si alloys processed by the powder metallurgy route have a relatively homogeneous fine-grained structure with higher hardness. However, these alloys are very brittle. On the other hand, the fracture toughness of arc-melted samples is immeasurable using Palmqvist’s method because the crack is stopped by a large area of titanium aluminide matrix.

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Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 87%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Properties Comparison of Ti-Al-Si Alloys Produced by Various Metallurgy Methods

et al. 2019

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“…This approach was tested on the examples of TiAl-Ti 5 Si 3 [252] and Ni 3 Al-Ni 3 V [253]. While the TiAl-Ti 5 Si 3 exhibits very high hardness and wear resistance, but low fracture toughness [254], the Ni 3 Al-Ni 3 V has already been applied successfully as the tool for the friction stir welding of stainless steel and titanium [253]. High-entropy alloys, as novel candidate materials for cutting tools, are receiving increasing attention.…”

Section: New Solutions For Tool Materialsmentioning

confidence: 99%

The Critical Raw Materials in Cutting Tools for Machining Applications: A Review

et al. 2020

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A variety of cutting tool materials are used for the contact mode mechanical machining of components under extreme conditions of stress, temperature and/or corrosion, including operations such as drilling, milling turning and so on. These demanding conditions impose a seriously high strain rate (an order of magnitude higher than forming), and this limits the useful life of cutting tools, especially single-point cutting tools. Tungsten carbide is the most popularly used cutting tool material, and unfortunately its main ingredients of W and Co are at high risk in terms of material supply and are listed among critical raw materials (CRMs) for EU, for which sustainable use should be addressed. This paper highlights the evolution and the trend of use of CRMs) in cutting tools for mechanical machining through a timely review. The focus of this review and its motivation was driven by the four following themes: (i) the discussion of newly emerging hybrid machining processes offering performance enhancements and longevity in terms of tool life (laser and cryogenic incorporation); (ii) the development and synthesis of new CRM substitutes to minimise the use of tungsten; (iii) the improvement of the recycling of worn tools; and (iv) the accelerated use of modelling and simulation to design long-lasting tools in the Industry-4.0 framework, circular economy and cyber secure manufacturing. It may be noted that the scope of this paper is not to represent a completely exhaustive document concerning cutting tools for mechanical processing, but to raise awareness and pave the way for innovative thinking on the use of critical materials in mechanical processing tools with the aim of developing smart, timely control strategies and mitigation measures to suppress the use of CRMs.

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Structure and Phase Composition of Ti–Al–Si Powder Composites at Different Synthesis Conditions

Коростелева

Коржова

2022

Russ Phys J

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Combination of reaction synthesis and Spark Plasma Sintering in production of Ti-Al-Si alloys

Cited by 28 publications

References 24 publications

Properties Comparison of Ti-Al-Si Alloys Produced by Various Metallurgy Methods

Properties Comparison of Ti-Al-Si Alloys Produced by Various Metallurgy Methods

The Critical Raw Materials in Cutting Tools for Machining Applications: A Review

Structure and Phase Composition of Ti–Al–Si Powder Composites at Different Synthesis Conditions

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