Spatio-temporal characteristics of the Portevin–Le Châtelier effect in austenitic steel with twinning induced plasticity

Zavattieri, Pablo; Savic, Vesna; Hector, Louis G.; Fekete, James R.; Tong, Wei; Xuan, Yue

doi:10.1016/j.ijplas.2009.02.008

Cited by 167 publications

(72 citation statements)

References 77 publications

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“…In some studies flat specimen surfaces are covered with a randomly distributed speckle pattern created by spray paint to produce a better physical reference for the image recording system and the correlation software [81]. DIC measurements have confirmed the common observation that the kinetics of strain buildup within a band changes when the stress is changed [80,82]. It has also been shown by DIC that drops in the stress-strain curve are directly correlated with band nucleation and the subsequent strain buildup inside the band, as can be seen in figure 11.…”

Section: Digital Image Correlationmentioning

confidence: 91%

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The Portevin–Le Chatelier effect: a review of experimental findings

Yılmaz¹

2011

Science and Technology of Advanced Materials

241

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The Portevin-Le Chatelier (PLC) effect manifests itself as an unstable plastic flow during tensile tests of some dilute alloys under certain regimes of strain rate and temperature. The plastic strain becomes localized in the form of bands which move along a specimen gauge in various ways as the PLC effect occurs. Because the localization of strain causes degradation of the inherent structural properties and surface quality of materials, understanding the effect is crucial for the effective use of alloys. The characteristic behaviors of localized strain bands and techniques commonly used to study the PLC effect are summarized in this review. A brief overview of experimental findings, the effect of material properties and test parameters on the PLC effect, and some discussion on the mechanisms of the effect are included. Tests for predicting the early failure of structural materials due to embrittlement induced by the PLC effect are also discussed.

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Section: Digital Image Correlationmentioning

confidence: 91%

“…Generally, the accuracy of strain measurements by the DIC method is within ±0.001 [80]. In some studies flat specimen surfaces are covered with a randomly distributed speckle pattern created by spray paint to produce a better physical reference for the image recording system and the correlation software [81].…”

Section: Digital Image Correlationmentioning

confidence: 99%

The Portevin–Le Chatelier effect: a review of experimental findings

Yılmaz¹

2011

Science and Technology of Advanced Materials

241

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“…The fast dislocation core diffusion has been proposed as an alternatively, to explain this widely observed room temperature DSA (Chen et al, 2007). Detailed DSA studies have been carried out by Chen et al (2007), Kim et al (2009) and Zavattieri et al (2009) for Fe-17-18Mn-0.6%C-1-1.5%Al have analyzed the PLC band properties. They report that the band velocity decreases with strain and that the band strain rate is 15-100 times the applied value.…”

Section: Strain Localizationmentioning

confidence: 99%

High Mn TWIP Steels for Automotive Applications

Cooman¹,

Chin²,

Kim³

2011

New Trends and Developments in Automotive System Engineering

117

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“…There have been many publications on dynamic strain aging and the PLC effect in TWIP steels. [15][16][17] The microstructure and mechanical properties of the hot rolled Fe-13Mn-0.2C-1Al-1Si TWIP Steel is investigated in this study. The conclusion of the study was expected to be an aid for future industrial manufacture of TWIP steel.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Portevin-Le Chatelier effect of hot-rolled Fe-13Mn-0.2C-1Al-1Si TWIP steel

Aydemir¹,

Zeytin²,

Guven³

2016

Mater. Tehnol.

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This study was undertaken to investigate the microstructure and mechanical properties of hot rolled Fe-13Mn-0.2C-1Al-1Si TWIP steel. Tensile tests were carried out at different strain rates to determine the Portevin-Le Chatelier (PLC) effect during deformation. Subsequently, the samples were investigated by light microscopy and SEM. The sample microstructures revealed inhomogeneous dislocation zones, deformation twinning and twin-dislocation interactions. Consequently, the PLC effect during deformation was determined to be responsible for the excellent mechanical properties of the TWIP steel. Keywords: TWIP steel, mechanical properties, microstructure, Portevin Le Chatelier effect V {tudiji je bila preiskovana mikrostruktura in mehanske lastnosti vro~e valjanega Fe-13Mn-0.2C-1Al-1Si TWIP jekla. Natezni preizkusi so bili izvedeni pri razli~nih hitrostih obremenjevanja. Kot rezultat nateznega preizkusa je bil ugotovljen u~inek Portevin-Le Chatelier (PLC) med deformacijo. Vzorci so bili nato preiskani s svetlobnim mikroskopom in s SEM. Mikrostruktura vzorcev ka`e nehomogena podro~ja dislokacij, deformacijske dvoj~ke in interakcije dvoj~kov z dislokacijami. Ugotovljeno je, da so odli~ne mehanske lastnosti TWIP jekla posledica vpliva PLC med deformacijo.

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Spatio-temporal characteristics of the Portevin–Le Châtelier effect in austenitic steel with twinning induced plasticity

Cited by 167 publications

References 77 publications

The Portevin–Le Chatelier effect: a review of experimental findings

The Portevin–Le Chatelier effect: a review of experimental findings

High Mn TWIP Steels for Automotive Applications

Investigation of Portevin-Le Chatelier effect of hot-rolled Fe-13Mn-0.2C-1Al-1Si TWIP steel

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