Influence of austenitic orientation on martensitic transformations in a compressed high manganese steel

Liu, T.-Y.; Yang, Ping; Meng, Liang; Lu, Fayun

doi:10.1016/j.jallcom.2011.05.015

Cited by 32 publications

(8 citation statements)

References 14 publications

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“…This combination of properties is a result of the transformation of retained austenite to martensite during straining, which is referred to as the TRIP effect. The ability of the retained austenite to transform during deformation is affected by many factors, such as (i) the local carbon content of the austenite (van Dijk et al, 2005;Blondé et al, 2012); (ii) the grain size of the retained austenite (Jimenez-Melero et al, 2007); (iii) its morphology (Xiong et al, 2013); (iv) the constraining effect of the phases surrounding the austenite (Timokhina et al, 2004;Jacques et al, 2001); and (v) its crystallographic orientation (Blondé et al, 2012;Kruijver et al, 2003;Muransky et al, 2008;Hilkhuijsen et al, 2013;Liu et al, 2011;Hilkhuijsen, 2013). The influence of austenite orientation on transformation stability is generally attributed to an orientation-dependent mechanical driving force (Hilkhuijsen et al, 2013;Creuziger & Foecke, 2010;.…”

Section: Introductionmentioning

confidence: 99%

Orientation dependence of the martensite transformation in a quenched and partitioned steel subjected to uniaxial tension

et al. 2014

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The orientation dependence of the austenite-to-martensite transformation during uniaxial tensile testing was modelled using the phenomenological theory of martensite crystallography and the mechanical driving force. It was validated experimentally by means of electron backscatter diffraction measurements on a pre-defined zone of a quenched and partitioned steel during interrupted tensile tests. A close match is obtained between the predictions of the model and the experimental observations.

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Section: Introductionmentioning

confidence: 99%

Orientation dependence of the martensite transformation in a quenched and partitioned steel subjected to uniaxial tension

et al. 2014

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“…2), as rapid solidification may reduce intergrain microsegregation inducing simultaneous extended solid solubility. 44,45 Nevertheless, an increasing roughness and density of small droplets are apparent at the surface with increasing Mn concentration. In addition, the neutron diffraction patterns exhibit a broad peak at around 2 ≈ 20° that is associated with a diffuse scattering feature from reflections of the (1½0) planes 47,48 .…”

Section: Resultsmentioning

confidence: 99%

Short-range structural and magnetic order in rapidly-solidified Ag Mn alloys

et al. 2016

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Short-range structural and magnetic order in rapidly solidified nanostructured Ag100-xMnx alloys featuring nominal large Mn content (x = 25, 32, 40 at.%), well above the maximum equilibrium concentration (x ~ 14 at.%), are quantified using x-ray, neutron and magnetic probes. These inhomogenous alloys contain coexisting Mn-rich and Mn-deficient nanoscopic face-centeredcubic-type phases. Interaction between these regions provides large exchange bias at low temperature, with the magnitude of the unidirectional anisotropy field increasing gradually with increased Mn concentration. Neutron diffraction data reveal no evidence of long-range antiferromagnetic ordering but instead identifies short-range structural order from the presence of a diffuse scattering peak that evolves with Mn content. Moderate annealing temperatures (Tann = 350 °C) promote homogenization of the Mn content in the alloys with subsequent suppression of exchange bias, confirming the above model. A strong interfacial exchange density between Mndeficient and the Mn-rich nanocrystalline phases exists that is determined to be of the same order of magnitude as that found in other exchange-biased ferromagnetic/antiferromagnetic systems. The intriguing behavior of these AgMn alloys as a function of temperature, of Mn content and of annealing condition highlights options to manipulate and tailor their magnetic attributes such as interface exchange and magnetic anisotropy.

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“…In other words, the orientation can be considered as the extrinsic factor governing the austenite stability. The dependence of austenite stability on the orientation can be observed during the plastic deformation, where a certain orientation for martensitic transformation is favored [ 122 , 123 , 124 , 125 ]. The austenite grains with the preferred orientation transform earlier owing to higher resolved shear stress [ 123 ].…”

Section: The Factors Govern Austenite Stabilitymentioning

confidence: 99%

On the Factors Governing Austenite Stability: Intrinsic versus Extrinsic

2020

Materials

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In this review, we separate the different governing factors on austenite stability into intrinsic and extrinsic factors, depending on the domain defined by austenite grain boundaries. The different measuring techniques on the effectiveness of the governing factors in affecting the austenite stability are discussed. On the basis of the austenite stability, a new alloy design strategy that involves the competition between the intrinsic and extrinsic factors to control the transformation-induced plasticity (TRIP) effect to realize the stronger the more ductile steel is proposed. The present review may provide new insights into the development of novel thermal-mechanical processing to advance the mechanical properties of steels for industrial applications.

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Influence of austenitic orientation on martensitic transformations in a compressed high manganese steel

Cited by 32 publications

References 14 publications

Orientation dependence of the martensite transformation in a quenched and partitioned steel subjected to uniaxial tension

Orientation dependence of the martensite transformation in a quenched and partitioned steel subjected to uniaxial tension

Short-range structural and magnetic order in rapidly-solidified Ag Mn alloys

On the Factors Governing Austenite Stability: Intrinsic versus Extrinsic

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