Determination of the flow curves of austenite steel wire in the drawing process

Przondziono, J.; Halaczek, Dariusz; Szymszal, J.

doi:10.1016/s1644-9665(12)60007-7

Cited by 3 publications

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“…Yield stress as a function of equivalent strain for a) Al, b) Cu, and c) F138. Data from the present study (▪) and from the literature (♢) and a theoretical curve drawn using the flow equation with the fitting parameters suggested by Csanádi et al…”

Section: Resultsmentioning

confidence: 99%

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Severe Plastic Deformation by Equal Channel Angular Pressing and Rolling: The Influence of the Deformation Path on Strain Distribution

et al. 2017

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The present work compares two deformation techniques, rolling and Equal Channel Angular pressing (ECAP), and the response offered by three different materials that differ in Stacking Fault Energy (SFE): AA1010 Al, commercially pure Cu, and an austenitic stainless steel. The objective of this investigation is to study the effect of each deformation mode on tensile behavior, deformation mechanism, texture, and microstructure and to establish the influence of the stacking fault energy on said effects. The results show that the different strain paths of ECAP and rolling do not affect the strength, but rolling leads to an accentuated texture and thus to elastic and plastic anisotropy. This finding has practical relevance for micro manufacturing techniques. Furthermore, it is observed that lower SFE results in smaller domain size and higher dislocation density, which are microstructural details related to strength and to the work hardening capacity. Finally, both techniques are able to produce a high amount of high angle grain boundaries, a feature that characterizes refined microstructures. These processes operate at different strain rates; thus, in low SFE materials, a more effective grain fragmentation by deformation-induced twins is observed after the ECAP process.

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Section: Resultsmentioning

confidence: 99%

“…Figure shows the experimental σ y data for AA1050 Al, Cu, and F138 together with literature data relative to the von Mises strain. This is superimposed on the flow relationship given by Equation .…”

Section: Resultsmentioning

confidence: 99%

Severe Plastic Deformation by Equal Channel Angular Pressing and Rolling: The Influence of the Deformation Path on Strain Distribution

et al. 2017

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“…Calculation of real cross-section of sample requires determination of real diameter of sample , which is subject to change due to present elastic and plastic elongation. For the load corresponding to proof stress, the value of real stress 0.2 was calculated in accordance with the formula (1) [9] 0.…”

Section: Methodsmentioning

confidence: 99%

“…Correct determination of parameters of plastic working and obtaining suitable final properties of products are connected with analysis of the course of function = ( ), where means strain expressed as a logarithm. Curves of flow stress change as the function of strain (so-called flow curves) enables us to forecast behaviour of the material during plastic working [9]. Strain applied in drawing process also has a significant influence on corrosion properties of wire used for production of guide wires [10,11].…”

Section: Introductionmentioning

confidence: 99%

Forecasting of Corrosion Properties of Steel Wires for Production of Guide Wires for Cardiological Treatment

Przondziono

Walke

Hadasik

et al. 2013

Advances in Materials Science and Engineering

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The study presents evaluation of the influence of strain in drawing process and of surface modification on resistance to electrochemical corrosion of wires made of stainless steel for production of guide wires used in invasive cardiology. The results of static tensile test enabled us to determine the course of flow curve of wires made of X10CrNi 18-8 steel as well as mathematical form of flow stress function. Resistance to electrochemical corrosion was evaluated on the ground of registered anodic polarisation curves by means of potentiodynamic method. The tests were performed in solution simulating human blood on samples that were electrolytically polished and samples that were polished and then chemically passivated. Exemplary anodic polarisation curves were given. It was proved that with the applied strain, corrosion properties decrease. It was found that chemical passivation improves wire corrosion characteristics. Statistical analysis showed that there is a significant dependence between corrosion properties (polarisation resistanceRp) and strainεapplied in drawing process. Functions that present the changeRp=f(ε)were selected. The issue is of importance to guide wire manufacturers because application of the suggested methodology will enable us to forecast corrosion characteristics of wire with the required strength drawn with the applied strain.

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The effect of strain hardening on resistance to electrochemical corrosion of wires for orthopaedics

Przondziono

Walke

Hadasik

et al. 2012

IOP Conf. Ser.: Mater. Sci. Eng.

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Determination of the flow curves of austenite steel wire in the drawing process

Cited by 3 publications

References 0 publications

Severe Plastic Deformation by Equal Channel Angular Pressing and Rolling: The Influence of the Deformation Path on Strain Distribution

Severe Plastic Deformation by Equal Channel Angular Pressing and Rolling: The Influence of the Deformation Path on Strain Distribution

Forecasting of Corrosion Properties of Steel Wires for Production of Guide Wires for Cardiological Treatment

The effect of strain hardening on resistance to electrochemical corrosion of wires for orthopaedics

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