Developments in Titanium Alloy Casting Technology

Eylon, D.; Froes, F. H.; Gardiner, R.W.

doi:10.1007/bf03338203

Cited by 26 publications

(9 citation statements)

References 18 publications

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“…Recently, pure titanium has been widely used both in dentistry (Parr et al, 1985;Miura et al, 1988) and in orthopaedic surgery (Bannon & Mild, 1983) because of its high corrosion resistance and biocompatibility (Albrektsson et al, 1983;Branemark et al, 1985). However, the use of pure titanium in prosthetic dentistry is hindered by its high melting temperature (1700°C) and extreme difficulty in casting (Donachie, 1982;Eylon et al, 1983;Rupp et al, 1986;Rupp et al, 1987). In an attempt to develop an alloy system with lower melting temperature than that of pure titanium, while still maintaining the excellent corrosion resistance and biocompatibility of the latter (Lutjering & Weissman, 1970;Waterstrat, 1977;Luchsinger etal, 1985), titanium alloys selected from eopper-titanium, eobait-titanium and nickel-titanium binary systems were fabricated.…”

Section: Introductionmentioning

confidence: 99%

Cu‐Ti, Co‐Ti and Ni‐Ti systems: corrosion and microhardness

Lin

Moser

Taira

et al. 1990

J of Oral Rehabilitation

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Titanium alloys of 10 wt%-72 wt% Cu, 10 wt%-80 wt% Co and 20 wt%-84 wt% Ni were investigated. Ingots were fabricated in a vacuum/argon tungsten arc furnace. The surfaces of the alloys were examined by optical microscopy and SEM/EDS, and the Knoop hardness values of the alloys were measured. The corrosion resistance of the alloys was determined by a potentiodynamic polarization technique in buffered Ringer's solution. When a threshold composition of 30 wt% alloy was reached, a large decrease in corrosion resistance was found to occur. Knoop hardness measurements showed that similar hardness values of approximately 300 KHN can be obtained in all systems with lower alloy content. These values are similar to those obtained with a commercial dental titanium alloy.

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Section: Introductionmentioning

confidence: 99%

Cu‐Ti, Co‐Ti and Ni‐Ti systems: corrosion and microhardness

Lin

Moser

Taira

et al. 1990

J of Oral Rehabilitation

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“…Step III After the GRC is calculated, its average is calculated at each process parameter level. Then its maximum Range is calculated by equation (11), and the weight of each response is calculated by equation (12), as shown in table 4:…”

Section: Gray Relational Analysismentioning

confidence: 99%

“…The Ti6Al4V alloy has an alpha+beta phase, where the best combination of both is applied. Therefore, Ti6Al4V is a good ductile, strong, formable, and corrosion-resistant alloy [2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Comparison of priori and posteriori approach of multi-objective optimization for WEDM on Ti6Al4V alloy

Jain

Parashar

2022

Mater. Res. Express

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Titanium alloys are known to have some excellent properties, such as good biocompatibility, good fatigue resistance and high strength to weight ratio. Due to these properties, Ti6Al4V alloy is widely used in the biomedical field, aerospace and automobile industries. In this article, pulse on-time (TON), pulse off time (TOFF), and servo voltage (SV) were selected as process parameters for wire electric discharge machining (WEDM) on Ti6Al4V alloy. The material removal rate (MRR) and surface roughness (SR) were determined as responses. MRR and SR have been equated by a central composite design (CCD: a response surface method technique). Then multi-objective Artificial Bee Colony optimization (MO-ABC) with Gray relational analysis (GRA) was selected as a priori approach for multi-objective optimization. Also, a multi-objective grasshopper optimization algorithm (MO-GOA) has been chosen as a posterior approach for optimization. These two algorithms have been tested on various iterations and populations. Based on the elapsed time, it has been found that the priori approach of multi-objective optimization is better than the posterior approach of multi-objective optimization. When comparing these algorithms based on the results, it is obtained that the posterior approach gives a better combination of multiple results. The major outcome of the research is that the priori method is quick, while the posterior approach produces many promising solutions.

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“…Furthermore, hot isostatic pressing (HIPing) [10,11] vacuum hot pressing (VHP) and metal injection moulding (MIM) [12], which are long established consolidation routes for titanium alloy powders, are outside of the scope of this review. Investment casting technology [13] and superplastic forming of sheet [14] are also established non-powder techniques used to manufacture NNS titanium alloy components and are also beyond the scope of this review. Metal AM processes involve the fabrication of components one layer at a time based upon cross sectional layers taken from a CAD model of the component.…”

Section: Introductionmentioning

confidence: 99%

Near Net Shape Manufacture of Titanium Alloy Components from Powder and Wire: A Review of State-of-the-Art Process Routes

Childerhouse

Jackson

2019

Metals

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Near net shape (NNS) manufacturing offers an alternative to conventional processes for the manufacture of titanium alloy components. Compared to the conventional routes, which typically require extensive material removal of forged billets, NNS methods offer more efficient material usage and can significantly reduce machining requirements. Furthermore, NNS manufacturing processes offer benefits such as greater flexibility and reduced costs compared to conventional methods. Processes such as metal additive manufacturing (AM) have started to be adopted in niche applications, most notably for the manufacture of medical implants, where many conventionally forged components have been replaced by those manufactured by AM processes. However, for more widespread adoption of these emerging processes, an improvement in the confidence in the techniques by manufacturers is necessary. This requires addressing challenges such as the limited mechanical properties of parts in their as-built condition compared to wrought products and the post-process machining requirements of components manufactured by these routes. In this review, processes which use a powder or wire feedstock are evaluated to assess their capabilities for the manufacture of titanium alloy components. These processes include powder bed fusion and direct energy deposition metal additive processes as well as hybrid routes, which combine powder metallurgy with thermomechanical post-processing.

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Developments in Titanium Alloy Casting Technology

Cited by 26 publications

References 18 publications

Cu‐Ti, Co‐Ti and Ni‐Ti systems: corrosion and microhardness

Cu‐Ti, Co‐Ti and Ni‐Ti systems: corrosion and microhardness

Comparison of priori and posteriori approach of multi-objective optimization for WEDM on Ti6Al4V alloy

Near Net Shape Manufacture of Titanium Alloy Components from Powder and Wire: A Review of State-of-the-Art Process Routes

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