Orientation determination by EBSP in an environmental scanning electron microscope

Garmestani, Hamid; Harris, Karen E.

doi:10.1016/s1359-6462(99)00086-x

Cited by 6 publications

(5 citation statements)

References 17 publications

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“…Environmental SEMs may be equipped with EBSD analysis. Nothing seems to have been published yet about in situ EBSD investigation of surface reactions but the feasibility of EBSD analysis in various environmental and thermal conditions has already been demonstrated in water and nitrogen environments for both conducting and non-conducting materials (Garmestani and Harris, 1999;Habesch, 2000). In situ phase transformation of low alloy TRIP aided steels confirmed that retained austenite gradually transformed upon straining, coarse equiaxed particles being less stable that elongated ones in the area monitored by EBSD .…”

Section: In Situ Investigationsmentioning

confidence: 94%

“…In situ phase transformation of low alloy TRIP aided steels confirmed that retained austenite gradually transformed upon straining, coarse equiaxed particles being less stable that elongated ones in the area monitored by EBSD . Electron backscatter diffraction in hot stage SEM has been made possible by a low effect of temperature on pattern quality for various materials up to 650 or even 700uC (Garmestani and Harris, 1999;Seward et al, 2002) and by the recent development of fast EBSD systems (Wright et al, 2005). Published studies mainly concentrated on recrystallisation and grain growth, e.g.…”

Section: In Situ Investigationsmentioning

confidence: 99%

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Application of electron backscatter diffraction to the study of phase transformations

Gourgues-Lorenzon¹

2007

International Materials Reviews

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615 ref. biblioInternational audienceThe application of the electron backscatter diffraction technique to the investigation of phase transformations is reviewed. The wide variety of results obtained using this technique is illustrated and discussed, focusing on thermodynamics and kinetics of phase transformations, solidification, solid state phase transformations, environmentally assisted reactions and thin film deposition. Emphasis is also placed on two rapidly growing developments: coupling electron backscatter diffraction with advanced experimental techniques and with more and more complex modelling of phase transformations and of resulting material properties

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Section: In Situ Investigationsmentioning

confidence: 94%

Section: In Situ Investigationsmentioning

confidence: 99%

Application of electron backscatter diffraction to the study of phase transformations

Gourgues-Lorenzon¹

2007

International Materials Reviews

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“…Texture measured from x-ray diffraction or electron backscatter diffraction (EBSD) gives the volume fraction of the material with orientation g i (Ref 21,22). F l mn may be calculated from f (g) and spherical harmonics as in Eq 8:…”

Section: Evolution Of Texture Coefficient During Plastic Deformationmentioning

confidence: 99%

Texture Prediction of Cold- and Hot-Rolled Titanium Using Processing Path Model

Bouhattate¹,

Li²,

Branco³

et al. 2010

J. of Materi Eng and Perform

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Titanium alloys have very attractive properties, which are highly dependent on the material microstructure. Accurately predicting the microstructure of such materials during processing for materials design is, therefore, very important. In this study, texture evolution of titanium alloys cold rolled at room temperature and hot rolled at 260°C is simulated using a processing path model. Texture coefficients, a set of weights in spherical harmonics expansion of texture, are utilized as descriptors of materials to represent the texture state of polycrystalline materials during processing. This model is based on the conservation principle in the orientation space. Deriving from experimental texture input at different deformation stages, the texture evolution matrix was calculated. This matrix is used to predict texture evolution for the specified deformation mode. The simulated texture evolution results agree well with experimental results.

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“…Texture measured from X-ray diffraction or electron backscatter diffraction (EBSD) gives the volume fraction of material with orientation g i Garmestani et al, 1999). F mn l can then be calculated from f(g) by linear combination of the texture coefficients of single crystal orientations:…”

Section: Evolution Of Texture Coefficient During Plastic Deformationmentioning

confidence: 99%

A texture evolution model in cubic-orthotropic polycrystalline system

Garmestani

Adams

2005

International Journal of Plasticity

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A new methodology based on a conservation principle in the orientation space is developed to simulate the texture evolution in a cubic-orthotropic polycrystalline system. A least squares error method was used to improve the accuracy of the simulation results obtained from the texture evolution function. The model is applied to uniaxial tension, compression and rolling for a large deformation of more than 50% using a single evolution parameter. The validity and application range of this new model are discussed by simulating and predicting texture evolution during different loading conditions. The new methodology provides a family of texture evolution paths and streamlines which empowers the materials designer to optimize the desired microstructure.

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Orientation determination by EBSP in an environmental scanning electron microscope

Cited by 6 publications

References 17 publications

Application of electron backscatter diffraction to the study of phase transformations

Application of electron backscatter diffraction to the study of phase transformations

Texture Prediction of Cold- and Hot-Rolled Titanium Using Processing Path Model

A texture evolution model in cubic-orthotropic polycrystalline system

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