Formability Analysis and Oxidation Layer Effects in Dieless Drawing of Stainless Steel Wires

Hwang, Yeong‐Maw; Liu, Han-Hsuan

doi:10.3390/met9080828

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…For microwires, Hwang and Liu [4] examine the effects of processing temperature and the oxide layer on the mechanical properties of the drawn wire in microwire dieless drawing by high-frequency induction heating using fine, 1 mm diameter stainless steel wire. Additionally, the influence of the drawing speed and the processing temperature on the drawing limit is examined by the finite element dieless drawing analysis.…”

Section: Contributionsmentioning

confidence: 99%

Metal Micro-Forming

Manabe

2020

Metals

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Section: Contributionsmentioning

confidence: 99%

Metal Micro-Forming

Manabe

2020

Metals

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“…The present authors have investigated the effects of oxide layers on the mechanical properties in dieless drawing of titanium alloys wires [ 17 ] and discussed the formability and oxidation layer effects in dieless drawing of stainless steel wires. [ 18 ] In this study, the formability and grain size evolution of titanium alloy wires during dieless drawing processes are investigated. A series of finite element simulations and experiments of dynamic recrystallization (DRX) of Ti–6Al–4V during dieless drawing processes are conducted to investigate the drawing formability and DRX volume fractions and grain size evolution of the drawn wires.…”

Section: Introductionmentioning

confidence: 99%

Investigations of Formability and Dynamic Recrystallization Development of Titanium Alloys During Dieless Wire Drawing Processes

Hwang

Liu

Wang

2022

steel research int.

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This study investigates the formability and grain size evolution during the dieless wire drawing process of titanium alloy Ti–6Al–4V. First, thermocompression tests of Ti–6Al–4V billets are conducted to obtain their flow stresses at different temperatures and strain rates. Dynamic recrystallization (DRX)‐related constants and grain size prediction models for titanium alloy Ti–6Al–4V are established from the flow stress curves through regression analyses. Then, a finite element software DEFORM 2D coupled with the established DRX models is adopted for DRX volume fraction and grain size evolution simulations of titanium alloy Ti–6Al–4V during dieless wire drawing processes. The effects of various drawing conditions, such as drawing speed, drawing temperature, and area reduction, on the formability of the wire after the dieless drawing process are discussed. Finally, a dieless drawing machine with a high‐frequency induction heating apparatus and a cooling system is developed. A series of experiments of dieless drawing of titanium alloy Ti–6Al–4V wires at different drawing speeds, drawing temperatures, and cooling rates are conducted. The analytical forming limits of area reductions and grain sizes are compared with experimental values to validate the finite element analysis and DRX models.

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Transformation of Surface Roughness of Mg Alloy Tubes During Laser Dieless Drawing

Milenin

Němeček

2020

J. of Materi Eng and Perform

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The paper investigates the transformation of surface roughness of tubes made from magnesium and magnesium alloys as a function of their longitudinal strain during laser dieless drawing. Experimental studies on three materials (AZ31, MgCa08, and pure Mg) have shown that the dependence of roughness on the longitudinal strain is nonlinear and exhibits a minimum. The proposed explanation for this is that the transformation of surface roughness occurs following two mechanisms. The first mechanism involves stretching of the tube and the decreasing of existing roughness with the increasing elongation. The second mechanism is based on the strain-induced surface roughening phenomenon. This mechanism leads to an increase in roughness with the increasing elongation. To analyze these mechanisms, a numerical model of roughness formation is used. It is experimentally shown that the position of the minimum roughness concerning the tube longitudinal strain is correlated with the stress-strain curve of the material under laser dieless drawing conditions. The obtained results provide a practical way to reduce surface roughness of tubes produced by the laser dieless drawing process. According to the proposed method, to achieve minimum roughness, it is necessary to keep the longitudinal strain under a specific value. This value is close to the strain, which corresponds to the maximum stress on the stress-strain curve of the material for temperature and strain rate, corresponding laser dieless drawing conditions.

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Formability Analysis and Oxidation Layer Effects in Dieless Drawing of Stainless Steel Wires

Cited by 4 publications

References 19 publications

Metal Micro-Forming

Metal Micro-Forming

Investigations of Formability and Dynamic Recrystallization Development of Titanium Alloys During Dieless Wire Drawing Processes

Transformation of Surface Roughness of Mg Alloy Tubes During Laser Dieless Drawing

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