The volume expansion accompanying the martensite transformation in iron-carbon alloys

Moyer, J.M.; Ansell, G. S.

doi:10.1007/bf02642308

Cited by 171 publications

(74 citation statements)

References 15 publications

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“…a volume expansion of just over 1.3%. Following similar reasoning the change from austenite to martensite is predicted to give an atomic volume increase of around 3.6%, which is in agreement with literature data for this transformation [11]. A value of 1.3% is used in Table 1 to capture this approach for the pearlite to martensite volume change.…”

Section: Atomic Volume Change Approachsupporting

confidence: 80%

The potential for suppressing rail defect growth through tailoring rail thermo-mechanical properties

Fletcher

Sanusi

2016

Wear

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Thermal damage of rails can occur through brake lock-up, or traction control system failure to prevent wheel spin. In most cases the damage produced is shallow and takes the form of a Òwhite etching layerÓ, usually thought to have a martensitic structure, formed as the steel is heated above its eutectoid temperature and then rapidly cooled as the wheel moves away. In many cases such layers are benign, but there is evidence of crack initiation at their interface with the sub-surface layers of the rail in ÒstudÓ defects. The metallurgical transformation during the formation of white etching layers leads to a volume change for the steel, leaving not only a transformed microstructure, but also locked-in stress. The influence of this additional locked-in stress on development of an initiated crack is studied in this paper, and the work extended to consider how alternative materials which react differently to the thermal input may offer a means to suppress crack development through locking in beneficial rather than problematic stresses.

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Section: Atomic Volume Change Approachsupporting

confidence: 80%

The potential for suppressing rail defect growth through tailoring rail thermo-mechanical properties

Fletcher

Sanusi

2016

Wear

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“…3(c) was estimated by previous studies. 17,18) There is a good correlation between the volume change and the dislocation density in lath martensite. Therefore, the volume change seems to be the most dominant factor influencing the dislocation density in the lath martensite.…”

Section: Resultsmentioning

confidence: 99%

Dislocation Density within Lath Martensite in Fe-C and Fe-Ni Alloys

2003

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“…According to the previous works [25,26], if transformation strain of the martensite islands is assumed to be an isotropic expansion, the transformation strain (e M *) of the Fe-0.19-1.01%C steels at martensite-start temperature is given by:…”

Section: Maximum Compressive Residual Stressmentioning

confidence: 99%

Effects of Vacuum-Carburizing Conditions on Surface-Hardened Layer Properties of Transformation-Induced Plasticity-Aided Martensitic Steel

Sugimoto

Hojo

Mizuno

2017

Metals

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Abstract:The effects of carbon potential in vacuum-carburization on the surface-hardened layer properties of the 0.2%C-1.5%Si-1.5%Mn-1.0%Cr-0.05%Nb transformation-induced plasticity-aided martensitic steel were investigated for the fabrication of precision gears. The volume fraction of retained austenite and hardness in the surface hardened layer of the steel increased with increasing carbon potential. Subsequent fine-particle peening enhanced the hardness and the compressive residual stress via severe plastic deformation and strain-induced martensite transformation, especially under a high carbon potential. The severe plastic deformation mainly contributed to increased hardness and compressive residual stress and the contribution of the strain-induced martensitic transformation was relatively small.

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The volume expansion accompanying the martensite transformation in iron-carbon alloys

Cited by 171 publications

References 15 publications

The potential for suppressing rail defect growth through tailoring rail thermo-mechanical properties

The potential for suppressing rail defect growth through tailoring rail thermo-mechanical properties

Dislocation Density within Lath Martensite in Fe-C and Fe-Ni Alloys

Effects of Vacuum-Carburizing Conditions on Surface-Hardened Layer Properties of Transformation-Induced Plasticity-Aided Martensitic Steel

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