Titan und Titanlegierungen: Struktur, Gefüge, Eigenschaften

Peters, M.; Hemptenmacher, J.; Kumpfert, J.; Leyens, Christoph

doi:10.1002/9783527611089.ch1

Cited by 18 publications

(17 citation statements)

References 5 publications

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“…The 10-10 pole figure does not show any high intensities (Figure 15 b)). According to [1,8] different preferred orientations are developing during the hot deformation of (α+β) titanium. The exact texture is dependent on the deformation temperature.…”

Section: Texturementioning

confidence: 99%

“…Titanium and its alloys have gained special interest for innovative light weight constructions due to their excellent mechanical properties such as Young's modulus, strength and fatigue resistance [1]. With the aim to widen the field of industrial applications of titanium alloys further bulk forming strategies than forging processes have to be evaluated.…”

Section: Introductionmentioning

confidence: 99%

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Influence of the Forming Temperature on the Microstructure and Mechanical Properties of Extruded Ti6Al4V Rods

Mueller¹,

Nitschke²,

Gall³

2016

Proceedings of the 13th World Conference on Titanium

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The extrusion of Ti6Al4V has to be done at temperatures above 900°C. It is known for the rolling and forging of dual phase titanium alloys that the process temperature has an influence on the resulting texture and microstructure. Through extrusion trials at temperatures between 920°C and 1000°C the influence of the process temperature during extrusion was investigated. The extrusion trials were performed on the 8 MN direct and indirect extrusion press of the Extrusion Research and Development Center of the TU Berlin. This press is equipped with load cells thus, the influence of the temperature on the deformation resistance and therefore on the extrusion process could be investigated. The direct extruded rods with a diameter of 19 mm were then analyzed for their microstructure (grain size, phase distribution), texture and mechanical properties (Young's modulus, yield strength).

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Section: Texturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of the Forming Temperature on the Microstructure and Mechanical Properties of Extruded Ti6Al4V Rods

Mueller¹,

Nitschke²,

Gall³

2016

Proceedings of the 13th World Conference on Titanium

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“…Additionally a two-phase (a+b)-field develops and furthermore, intermetallic phases may appear. Generally Titanium based alloys are classified into a-, (a+b)-and b-alloys [3]. To further specific classifications and the special feature of c-TiAl should only be referred in this context.…”

Section: Introductionmentioning

confidence: 99%

“…The most common Titanium based alloy is TiAl6V4 [3]. Due to the very limited deformation ability of the hexagonal a-phase, TiAl6V4 as an (a+b)-alloy can only be formed substantially at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

Manufacture of Titanium implants

Klose¹,

Rehtanz²,

Rothe³

et al. 2008

Materialwissenschaft Werkst

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Titanium is characterized by low density and excellent biocompatibility. Furthermore, Titanium based alloys feature a high strength. Due to this combination of properties Titanium and Titanium based alloys are increasingly used by medical technique. TiAl6V4 as an (a+b)-alloy can only be formed substantially at high temperatures due to the limited deformation ability of the a-phase. Titanium's capability to dissolve several percent of oxygen causes difficulties at heat treatment and hot forming especially in thin dimensions. Alternative solutions and methods of resolution are being discussed. Based on a strip manufacturing process a cold rolled strip can be produced for specific applications. The process is mainly applicable to produce a cold rolled strip suitable for superplastic forming. For this purpose the superplastic forming was adapted to the new strip material. The cold rolled TiAl6V4-strip exhibits a technically interesting area for superplastic forming. Formation of the microstructure and mechanical properties are being explained. On the basis of these results a first prototype shell of a pacemaker case was manufactured from the specific cold rolled TiAl6V4-strip by superplastic forming. The results demonstrate the possibility to manufacture pacemaker cases with equable properties.

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“…Ti-6Al-4V titanium alloy was widely used in the aerospace and military industries due to its excellent specific strength, high shear modulus, low density and thermal expansion coefficient [1][2][3]. However, traditional manufacturing methods of Ti-6Al-4V titanium alloy, such as forging or cutting, which have the disadvantages of a high buy-to-fly ratio and low manufacturing flexibility, are not economical.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Ti-6Al-4V Fabricated by Vertical Wire Feeding with Axisymmetric Multi-Laser Source

Gong

Zhang

et al. 2017

Applied Sciences

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Vertical wire feeding with an axisymmetric multi-laser source (feeding the wire vertically into the molten pool) has exhibited great advantages over LAM (laser additive manufacturing) with paraxial wire feeding, which has an anisotropic forming problem in different scanning directions. This paper investigates the forming ability of vertical wire feeding with an axisymmetric multi-laser source, and the microstructure and mechanical properties of the fabricated components. It has been found that vertical wire feeding with an axisymmetric multi-laser source has a strong forming ability with no anisotropic forming problem when fabricating the complex parts in a three-axis machine tool. Most of the grains in the samples are equiaxed grains, and a small amount of short columnar grains exist which are parallel to each other. The microstructure of the fabricated samples exhibits a fine basket-weave structure and martensite due to the fast cooling rate which was caused by the small size of the molten pool and the additional heat dissipation from the feeding wire. The static tensile test shows that the average ultimate tensile strength is 1140 MPa in the scanning direction and 1115 MPa in the building direction, and the average elongation is about 6% in both directions.

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Titan und Titanlegierungen: Struktur, Gefüge, Eigenschaften

Cited by 18 publications

References 5 publications

Influence of the Forming Temperature on the Microstructure and Mechanical Properties of Extruded Ti6Al4V Rods

Influence of the Forming Temperature on the Microstructure and Mechanical Properties of Extruded Ti6Al4V Rods

Manufacture of Titanium implants

Microstructure and Mechanical Properties of Ti-6Al-4V Fabricated by Vertical Wire Feeding with Axisymmetric Multi-Laser Source

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