Investigation of Sheet-Titanium Forming with Flexible Tool – Experiment and Simulation / Badanie Kształtowania Blach Tytanowych Z Wykorzystaniem Elastycznego Narzędzia - Doświadczenie I Symulacja

Adamus, J.; Lacki, P.

doi:10.2478/v10172-012-0139-8

Cited by 13 publications

(9 citation statements)

References 4 publications

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“…The most common types of sheet metal that are formed through processes using elastomeric materials are aluminium [ 7 , 8 ] and aluminium alloys [ 9 ]. However, difficult-to-deform materials, such as high-strength steels [ 10 ], titanium alloys [ 11 ] or Ni-based superalloys [ 12 , 13 ], can be successfully formed. The use of this type of alloy to form processes with elastomeric materials causes many problems.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research and Numerical Modelling of the Cold Forming Process of the Inconel 625 Alloy Sheets Using Flexible Punch

Balcerzak,

Żaba,

Hojny

et al. 2023

Materials

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The paper presents the numerical and experimental results of research aimed at determining the influence of hardness in the range of 50–90 Shore A of layered tools composed of elastomeric materials on the possibility of forming Inconel 625 nickel-based alloy sheets. A stamping die composed of 90MnCrV8 steel (hardness 60HRC) was designed for forming embosses in drawpieces, ensuring various stress states on the cross-section of the formed element. The principle of operating the stamping die was based on the Guerin method. The finite-element-based numerical modelling of the forming process for various configurations of polyurethane inserts was also carried out. The drawpieces obtained through sheet forming were subjected to geometry tests using optical 3D scanning. The results confirmed that, in the case of forming difficult-to-deform Inconel 625 Ni-based alloy sheets, the hardness of the polyurethane inserts significantly affected the geometric quality of the obtained drawpieces. The assumptions determined in numerical simulations were verified in experimental studies. Based on the test results, it was concluded that the selection of polyurethane hardness should be determined by the shape of the formed element. Significant nonuniform sheet metal deformations were also found, which may pose a problem in the process of designing forming tools and the technology of the plastic forming of Inconel 625 Ni-based alloy sheets.

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Section: Introductionmentioning

confidence: 99%

Experimental Research and Numerical Modelling of the Cold Forming Process of the Inconel 625 Alloy Sheets Using Flexible Punch

Balcerzak,

Żaba,

Hojny

et al. 2023

Materials

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“…Due to numerous technological problems, the methods that facilitate titanium sheet metal have been developed [5], using e.g. hot forming [6], forming with flexible tool [7][8]and forming titanium welded blanks [8].…”

Section: Introductionmentioning

confidence: 99%

Determination of FLD for Ti-6Al-4V Titanium Alloy Sheet

Lacki

2016

KEM

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Ti-6Al-4V is the most widely applied titanium alloy in technology and medicine due its good mechanical properties combined with low density and good corrosion resistance. However, poor technological and tribological properties make it very difficult to process, including the problems with sheet-metal forming. The best way to evaluate sheet drawability is to use Forming Limit Diagram (FLD), which represents a line at which failure occurs. FLD allows for determination of critical forming areas.The FLDs can be determined both theoretically and experimentally. Recently, special optical strain measurement systems have been used to determine FLDs.In this study, material deformation was measured with the Aramis system that allows for real-time observation of displacements of the stochastic points applied to the surface using a colour spray. The FLD was determined for Ti-6Al-4V titanium alloy sheet with thickness of 0.8 mm. In order to obtain a complete FLD, a set of 6 samples with different geometries underwent plastic deformation in stretch forming i.e. in the Erichsen cupping test until the appearance of fracture.The real-time results obtained from the ARAMIS software for multiple measurement positions from the test specimen surface were compared with numerical simulations of the cupping tests. The numerical simulations were performed using the PamStamp 2G v2012 software dedicated for analysis of sheet-metal forming processes. PamStamp 2G is based on the Finite Element method (FEM). The major and minor strains were analysed. The effect of friction conditions on strain distribution was also taken into consideration

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“…Depending on the pursued information certain simplifying assumptions can be introduced into the material model. In simulations of forming processes or macroscopic deformation behaviour averaged material parameters are usually used [9][10]. In the models taking into account alloy microstructure the phases were often treated as homogeneous and isotropic materials and in certain cases two-dimensional models were elaborated and performed well in the attempts to describe deformation and fracture of structural materials and to estimate the effect of various variables on the material response to loading in various conditions [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Primary Creep Behaviour of Two-Phase Titanium Alloy with Various Microstructure

Ziaja¹,

Motyka²,

Kubiak³

et al. 2016

Archives of Metallurgy and Materials

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Creep and fatigue properties of two-phase titanium alloys show strong dependence on microstructure, especially morphology of the α and β phases which can be controlled to certain extent by proper selection of hot working and heat treatment conditions. In the paper the creep behaviour of Ti-6Al-2Mo-2Cr alloy (VT3-1) at elevated temperature was modelled. Finite element analyses of primary creep stage were carried out taking into account some microstructural features of the two-phase alloy that were included in the physical model and different properties of α and β phases. In order to verify results of calculations distinct types of microstructure were developed in the alloy by heat treatment and creep tests were carried out at elevated temperature (450°C) at various stress levels. Based on the FEM simulations the effect of changes of some microstructure features on primary creep strain development was estimated.

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Investigation of Sheet-Titanium Forming with Flexible Tool – Experiment and Simulation / Badanie Kształtowania Blach Tytanowych Z Wykorzystaniem Elastycznego Narzędzia - Doświadczenie I Symulacja

Cited by 13 publications

References 4 publications

Experimental Research and Numerical Modelling of the Cold Forming Process of the Inconel 625 Alloy Sheets Using Flexible Punch

Experimental Research and Numerical Modelling of the Cold Forming Process of the Inconel 625 Alloy Sheets Using Flexible Punch

Determination of FLD for Ti-6Al-4V Titanium Alloy Sheet

Primary Creep Behaviour of Two-Phase Titanium Alloy with Various Microstructure

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