Verformungslokalisierung und Spanbildung in Inconel 718

Clos, R.; Lorenz, Heike; Schreppel, U.; Veit, Peter

doi:10.1002/3527605142.ch19

Cited by 5 publications

(2 citation statements)

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“…During heavy deformation especially at high strain rate, it has been reported [9] that the deformed local layers experience rapid heating and quenching cycle. It is expected that pulsed laser heating pro- duces similar thermal cycles.…”

Section: Discussionmentioning

confidence: 99%

Dissolution of cementite in carbon steels by ball drop deformation and laser heating

Todaka

Umemoto

Ohno

et al. 2007

Journal of Alloys and Compounds

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Section: Discussionmentioning

confidence: 99%

Dissolution of cementite in carbon steels by ball drop deformation and laser heating

Todaka

Umemoto

Ohno

et al. 2007

Journal of Alloys and Compounds

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“…For the experiments whereby the workpiece temperature was varied, U-shaped material samples have been used to keep the setup as simple as possible inside the heated zone. The geometry of the samples was chosen following experiments on the deformation behaviour of the nickel based alloy Inconel 718 with the Split-Hopkinson-Pressure-Bar test by Clos et al [12].…”

Section: Methodsmentioning

confidence: 99%

Quasi-static chip formation of intermetallic titanium aluminides

Uhlmann

Herter

Gerstenberger

et al. 2009

Prod. Eng. Res. Devel.

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As a result of the development of new materials for high temperature applications the potential for mass reduction and increased process temperatures is constantly being expanded. Intermetallic c-TiAl alloys can meet these demands to a large extent. The properties necessary for these applications have an adverse effect on the machinability however and render intermetallic titanium aluminides as difficult to machine materials. Cutting operations tend to produce damaged surfaces which are unsuitable for the intended applications. As the basis for a reliable and economic cutting technology, the chip formation of the intermetallic TiAl alloy TNBV5 has been examined in quasi-static cutting experiments. Observations showed that increased workpiece temperatures lead to a transition of the chip formation from segmented to continuous chips. By decreasing the undeformed chip thickness crack-free surfaces could be produced at low workpiece temperatures. In this case other mechanisms than the thermal activation of slip systems must be the reason for the observed large plastic deformations. The theory that hydrostatic pressure leads to this behavior is substantiated by the results of finite element simulations. This offers the possibility for damage free machining at lower cutting speeds, thus enabling the use of conventional tool materials at an acceptable tool life.

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