Strain aging of austenitic Hadfield manganese steel

Owen, W. S.; Grujičić, M.

doi:10.1016/s1359-6454(98)00347-4

Cited by 155 publications

(75 citation statements)

References 30 publications

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“…Carbon steels allow the easy permeation of hydrogen, which may interact with foreign atoms such as carbon and nitrogen existing in the metal and promote the interaction of all solutes with dislocations [2,61]. A common explanation of the PLC effect for carbon steels is based on reaching a critical strain required to produce a sufficient number of vacancies, that permit carbon diffusion to the dislocation cores, as discussed in depth by Chen et al and others [62][63][64]. The experimental results of McCormick [65] were in agreement with a model based on mobile dislocations being temporarily arrested at obstacles in the slip path, which was a new proposal at that time.…”

Section: Plc Mechanismsmentioning

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 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: Plc Mechanismsmentioning

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 carbide precipitation and the consequent removal of the carbon from the metal lattice implies also a decreasing of the strain aging phenomenon that is evident in the tensile test realized at room temperature for the steels deformed at temperature lower than 500°C and this phenomenon points out that below 500°C the carbide precipitation decreases as the applied deformation temperature decreases. 13) The presence of martensite in the samples deformed at the lowest temperature (250°C) explains why their ductility is lower than the ductility observed for the samples deformed at 300°C and 350°C when the deformation is mainly realized by twinning as can be expected in austenite steels featured by a fcc elementary cell. [13][14][15][16][17] The metallographic observations at room temperature performed on the specimens confirm that the twinning density (Figs.…”

Section: Discussionmentioning

confidence: 90%

Hardening Optimization of High Chromium-manganese Austenitic Steel

et al. 2016

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“…It was reported that the DSA in C-enriched high-Mn steels is attributed to the formation of Mn-C SRO [17,49,50]. Dastur and Leslie [17] claimed that the Mn-C octahedral clusters may reorient themselves in the stress field near a dislocation core, which strongly pins the dislocations and causes them to pile up.…”

Section: Discussionmentioning

confidence: 99%

On the Mn–C Short-Range Ordering in a High-Strength High-Ductility Steel: Small Angle Neutron Scattering and Ab Initio Investigation

Song

Bogdanovski

Yildiz

et al. 2018

Metals

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Abstract:The formation of Mn-C short-range ordering (SRO) has a great influence on the mechanical properties of high-Mn steels. In the present work, the formation of Mn-C SRO during recrystallization of an X60Mn18 steel was investigated by means of a combined study employing small angle neutron scattering (SANS) and ab initio ground-state energy calculations based on density-functional theory. The SANS measurements prove the presence of Mn-C SRO in the recrystallization annealed X60Mn18 steel and indicate the evolution of the SRO during recrystallization. The results show that with the increase in annealing time, the mean size of the Mn-C SRO decreases, whereas the number density increases. The ab initio calculations well describe the energetically favored condition of Mn-C SRO and provide the theoretical explanation of the clustering formation and evolution in the X60Mn18 steel. The stress-strain curve of the X60Mn18 steel exhibits a high strain-hardening rate and the plastic deformation is characterized with a series of serrations during a uniaxial tensile test. In the end, the correlation between Mn-C SRO and the serrated flow of high-Mn steels is further discussed.

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Strain aging of austenitic Hadfield manganese steel

Cited by 155 publications

References 30 publications

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

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

Hardening Optimization of High Chromium-manganese Austenitic Steel

On the Mn–C Short-Range Ordering in a High-Strength High-Ductility Steel: Small Angle Neutron Scattering and Ab Initio Investigation

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