Recent developments in plastic forming technology of titanium alloys

Yang, He; Fan, Xiaoguang; Sun, Zhichao; Guo, Liang; Zhan, Mei

doi:10.1007/s11431-010-4206-y

Cited by 86 publications

(25 citation statements)

References 137 publications

(149 reference statements)

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“…It is applied both as commercially pure titanium [1,2] and titanium alloys [3][4][5]. Commercially pure titanium is used for less demanding structural components which are not required to be so highly mechanically strong, but are rather only expected to be light, resistant to corrosion and able to operate at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

Analysis of forming thin titanium panels with stiffeners

Adamus

Winowiecka

Dyner

2017

Archives of Metallurgy and Materials

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The growing demand for light and durable products has caused an increase in interest in products formed of thin sheets. In order to ensure sufficient stiffness of the drawn -parts, stiffening is often performed. Unfortunately, during the forming of stiffeners unwanted deformations of the drawn parts very often appear, which prevent them from further exploitation. In the paper, forming thin titanium panels with stiffeners is analysed. The panels are made of sheets of commercially pure titanium: Grades 2, 3 and 4. In the results of numerical analyses which were performed using PamStamp 2G, taking into consideration the impact of the blank holder force and friction conditions on the strain distribution in the drawn parts, sheet thinning and springback values are presented. The numerical analysis results were compared with the experimental tests. It was concluded that in order to prevent panel deformation being a result of residual stresses, it is necessary to ensure adequate friction conditions on the contact surfaces between the deformed material and tools as well as a suitable blank holder force.

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Section: Introductionmentioning

confidence: 99%

Analysis of forming thin titanium panels with stiffeners

Adamus

Winowiecka

Dyner

2017

Archives of Metallurgy and Materials

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“…Nowadays, there is a tendency to replace heavy monolithic aircraft components with lighter ones made of sheet-metals. Among various manufacturing techniques such as machining, metal forming, powder metallurgy or casting, sheetmetal forming seems to be the most suitable regarding strength and lightness of the produced parts [6]. Sheetmetal forming allows for the production of both very small and very large components, with simple or complex geometry.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of forming titanium drawn part

Adamus

Lacki

2015

Meccanica

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Structure weight is a priority issue in the transport industry, especially in aviation, therefore the demand for drawn parts made of titanium has grown steadily. Titanium in comparison to steel and aluminium has a much more beneficial specific strength so it is used where high mechanical strength and low construction weight are especially essential. In view of its high melting temperature, titanium is also used for aircraft fire walls. Although titanium has excellent properties such as high strength, low weight and good corrosion resistance, it is very difficult in production and processing. There are many technological problems that have to be overcome in forming titanium sheets. Titanium, especially titanium alloy sheets have poor drawability, high springback and low tribological properties. In the paper, the numerical analysis of forming a titanium panel made of commercially pure Gr 2 titanium is presented. The numerical simulation has been performed using the PamStamp program, dedicated to sheet-metal forming, based on the finite element method. In addition to the stress and strain distribution being analysed, the influence of the holding-down force and frictional conditions on the forming process are examined. The quality of the obtained titanium drawn-part is assessed basing on the correctness of its shape and dimensions with the reference ones, as well as on material thinning.

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“…They have been widely used in the fields of aerospace, chemical processing, marine and offshore, transportation, medicine, etc. Plastic forming has been the most applicable forming route for titanium components, which cannot only reduce the cost due to machining but also enhance the performance of the products [2]. However, titanium alloys are often considered more difficult to form than other metallic alloys, such as steel and aluminium, because of their high yield stress and low elastic modulus.…”

Section: Introductionmentioning

confidence: 99%

Effects of flow stress behaviour, pressure loading path and temperature variation on high-pressure pneumatic forming of Ti-3Al-2.5V tubes

Liu

Wang

Dang

et al. 2015

Int J Adv Manuf Technol

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High-pressure pneumatic forming (HPPF) is an internal high-pressure forming process at elevated temperatures, which is based on quick plastic forming (QPF), hot metal gas forming (HMGF) and hydroforming. In this study, the HPPF experiments were performed on Ti-3Al-2.5V tubes using a square cross-sectional die at higher pressure levels and lower temperatures. The uniaxial tensile tests were carried out at various temperatures and strain rates before the HPPF experiments. The flow stress of Ti-3Al-2.5V tubes is evidently affected by both temperature and strain rate. Because of this, the corner radii all change linearly over time at the pressurization stage but exponentially over time at the constant pressure stage. The cooling effect of the inflow process on the tubes results in temperature differences between the centre of the straight wall areas and the corner areas of the tubes during the inflow process. Adopting the lower pressurization rate and filling regenerative materials into the tube are effective methods for decreasing or eliminating the temperature difference.

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Recent developments in plastic forming technology of titanium alloys

Cited by 86 publications

References 137 publications

Analysis of forming thin titanium panels with stiffeners

Analysis of forming thin titanium panels with stiffeners

Numerical simulation of forming titanium drawn part

Effects of flow stress behaviour, pressure loading path and temperature variation on high-pressure pneumatic forming of Ti-3Al-2.5V tubes

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