Microstructural evolution of a TC11 titanium alloy during linear friction welding

Lang, Bo; Zhang, T. C.; Li, X. H.; Guo, Dong

doi:10.1007/s10853-010-4716-9

Cited by 41 publications

(34 citation statements)

References 19 publications

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“…Four experiments were also completed using thermocouples (welds [26][27][28][29]. To insert the k-type thermocouples several workpieces had four 1.2 mm diameter holes drilled through them perpendicularly to the oscillation direction and parallel to the direction of the applied force at the positions shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…However, the problem with this approach is that the coefficients of friction need to be known so that the thermal aspects of the model during phase 1 can be replicated accurately. Also, models of this type show that the two workpieces never truly merge -as happens in reality for many materials [2,26,27] -meaning that the mechanical mixing of the separate workpieces is not considered. The second approach [7,9,10,[14][15][16]18,22,25] is to model only one workpiece, which is oscillated against a non-deformable surface, as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

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Modelling the influence of the process inputs on the removal of surface contaminants from Ti–6Al–4V linear friction welds

McAndrew

Colegrove

Addison

et al. 2015

Materials & Design (1980-2015)

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a b s t r a c tThe linear friction welding (LFW) process is finding increasing interest from industry for the fabrication of near-net-shape, titanium alloy Ti-6Al-4V, aerospace components. Currently, the removal of surface contaminants, such as oxides and foreign particles, from the weld interface into the flash is not fully understood. To address this problem, two-dimensional (2D) computational models were developed using the finite element analysis (FEA) software DEFORM and validated with experiments. The key findings showed that the welds made with higher applied forces required less burn-off to completely remove the surface contaminants from the interface into the flash; the interface temperature increased as the applied force was decreased or the rubbing velocity increased; and the boundary temperature between the rapid flash formation and negligible material flow was approximately 970°C. An understanding of these phenomena is of particular interest for the industrialisation of near-net-shape titanium alloy aerospace components.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modelling the influence of the process inputs on the removal of surface contaminants from Ti–6Al–4V linear friction welds

McAndrew

Colegrove

Addison

et al. 2015

Materials & Design (1980-2015)

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“…Karadge et al detailed the texture of LFW Ti-6Al-4V joints by experiment [24]. Microstructural evolution of LFW Ti-6.5Al-3.5Mo-1.5Zr-0.3Si joint [25], the relationship between forging pressure and the microstructure of LFW Ti-6Al-4V joint were also revealed [26]. Interrelationship of microstructure and mechanical properties of LFW titanium joint was also investigated [27].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Friction Welding Joints with Dissimilar Titanium Alloys

Zhao

2016

Metals

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Titanium alloys, which are important in aerospace application, offer different properties via changing alloys. As design complexity and service demands increase, dissimilar welding of the titanium alloys becomes a particular interest. Linear friction welding (LFW) is a relatively novel bond technique and has been successfully applied for joining titanium alloys. In this paper, dissimilar joints with Ti-6Al-4V and Ti-5Al-2Sn-2Zr-4Mo-4Cr alloys were produced by LFW process. Microstructure was studied via optical microscopy and scanning electron microscopy (SEM), while the chemical composition across the welded samples was identified by energy dispersive X-ray spectroscopy. Mechanical tests were performed on welded samples to study the joint mechanical properties and fracture characteristics. SEM was carried out on the fracture surface to reveal their fracture modes. A significant microstructural change with fine re-crystallization grains in the weld zone (WZ) and small recrystallized grains in the thermo-mechanically affected zone on the Ti-6Al-4V side was discovered in the dissimilar joint. A characteristic asymmetrical microhardness profile with a maximum in the WZ was observed. Tensile properties of the dissimilar joint were comparable to the base metals, but the impact toughness exhibited a lower value.

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“…The microstructure of TC11 alloy is composed of equiaxed prior-α phase and intergranular transformed β phase (mixture of lamellar α and β phases). The volume fraction of β phase is about 47.4% [25]. TC17 alloy is rich in β phase and is composed of basket-weave microstructure, and α phase precipitates uniformly within grains [26].…”

Section: Microstructurementioning

confidence: 99%

Strain hardening behavior of linear friction welded joints between TC11 and TC17 dissimilar titanium alloys

Zhao

2015

Materials Science and Engineering: A

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Microstructural evolution of a TC11 titanium alloy during linear friction welding

Cited by 41 publications

References 19 publications

Modelling the influence of the process inputs on the removal of surface contaminants from Ti–6Al–4V linear friction welds

Modelling the influence of the process inputs on the removal of surface contaminants from Ti–6Al–4V linear friction welds

Microstructure and Mechanical Properties of Friction Welding Joints with Dissimilar Titanium Alloys

Strain hardening behavior of linear friction welded joints between TC11 and TC17 dissimilar titanium alloys

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