Triaxial Measurement Method for Analysis of Residual Stress after High Feed Milling by X-Ray Diffraction

Czán, Andrej; Zaušková, Lucia; Šajgalík, Michal; Drbúl, Mário

doi:10.2478/teen-2016-0019

Cited by 5 publications

(6 citation statements)

References 4 publications

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“…It is well known, the high surface temperatures and gradients with high temperature can cause the change of surface integrity, such as microstructures changes, phase transformation, plastic deformation and high residual tensile stress. Bushley et al [23] observed the white layer when milling Inconel 718, phase transformation was mentioned by Liao et al [24] and residual stress when turning was analysed by Devillez et al [22]. As explained previously, the information obtained by semi-synthetic thermocouple is applicable for analyse of temperature distribution on cutting edge during the formation of a single chip (Fig.…”

Section: Results Of Experiments and Discussionmentioning

confidence: 84%

Cutting Zone Temperature Identification During Machining of Nickel Alloy Inconel 718

Czán

Daniš

Holubják

et al. 2017

Technological Engineering

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Quality of machined surface is affected by quality of cutting process. There are many parameters, which influence on the quality of the cutting process. The cutting temperature is one of most important parameters that influence the tool life and the quality of machined surfaces. Its identification and determination is key objective in specialized machining processes such as dry machining of hard-to-machine materials. It is well known that maximum temperature is obtained in the tool rake face at the vicinity of the cutting edge. A moderate level of cutting edge temperature and a low thermal shock reduce the tool wear phenomena, and a low temperature gradient in the machined sublayer reduces the risk of high tensile residual stresses. The thermocouple method was used to measure the temperature directly in the cutting zone. An original thermocouple was specially developed for measuring of temperature in the cutting zone, surface and subsurface layers of machined surface. This paper deals with identification of temperature and temperature gradient during dry peripheral milling of Inconel 718. The measurements were used to identification the temperature gradients and to reconstruct the thermal distribution in cutting zone with various cutting conditions.

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Section: Results Of Experiments and Discussionmentioning

confidence: 84%

Cutting Zone Temperature Identification During Machining of Nickel Alloy Inconel 718

Czán

Daniš

Holubják

et al. 2017

Technological Engineering

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“…The accuracy of the XRD-sin 2 ψ residual stress measurement depends on the minimization of various measurement errors derive from several sources. Materials to be measured, machine limitation, methods of analyses, manpower and software measurement conditions are the main big uncertain sources [3,4,5,6].…”

Section: Introductionmentioning

confidence: 99%

Study of Error Analysis and Sources of Uncertainty in the Measurement of Residual Stresses by the X-Ray Diffraction

Filho

Medeiros

Martinez

et al. 2018

Materials Research Proceedings

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“…However, the work-piece is constrained within the groove by a stationary constraint die; and this die also stops the work-piece and force sit to turn at an angle by shear as in a regular ECAP process. [6,7] This set-up effectively makes the ECAP process continuous. Other ECAP parameters, such as the die angle and the strain rate, can also be easily incorporated into the facility.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Functional Properties by Sever Plastic Deformation on Parts of Titanium Biomaterials

Czán

Babík

Daniš

et al. 2017

Technological Engineering

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Main task of materials for invasive implantology is their biocompatibility with the tissue but also requirements for improving the functional properties of given materials are increasing constantly. One of problems of materials biocompatibility is the impossibility to improve of functional properties by change the percentage of the chemical elements and so it is necessary to find other innovative methods of improving of functional properties such as mechanical action in the form of high deformation process. This paper is focused on various methods of high deformation process such as Equal Channel Angular Pressing (ECAP) when rods with record strength properties were obtained.The actual studies of the deformation process properties as tri-axial compress stress acting on workpiece with high speed of deformation shows effects similar to results obtained using the other methods, but in lower levels of stress. Hydrostatic extrusion (HE) is applying for the purpose of refining the structure of the commercially pure titanium up to nano-scale. Experiments showed the ability to reduce the grain size below 100 nm. Due to the significant change in the performance of the titanium materials by severe plastic deformation is required to identify the processability of materials with respect to the identification of created surfaces and monitoring the surface integrity, where the experimental results show ability of SPD technologies application on biomaterials.

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Triaxial Measurement Method for Analysis of Residual Stress after High Feed Milling by X-Ray Diffraction

Cited by 5 publications

References 4 publications

Cutting Zone Temperature Identification During Machining of Nickel Alloy Inconel 718

Cutting Zone Temperature Identification During Machining of Nickel Alloy Inconel 718

Study of Error Analysis and Sources of Uncertainty in the Measurement of Residual Stresses by the X-Ray Diffraction

Improvement of Functional Properties by Sever Plastic Deformation on Parts of Titanium Biomaterials

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