Results 201 to 210 of about 57,331 (267)
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Martensitic transformation of Ca
Physical Review B, 1990A la temperature ambiante, Ca subit une transformation structurale induite par la pression de 20 GaPa, passant de la structure cubique a faces centrees a cubique centre. On examine un modele de distorsion pour cette transformation. Le mecanisme de Bain est un cas particulier de la distorsion triclinique plus generale, et des lors qu'un chemin dans cet ...
, Wentzcovitch, , Krakauer
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Acta Materialia, 2019
On the basis of the “-Mo-Ti-Mo-” linear unit along the specific β, β, and β directions, the cluster structures of α″-martensite and ω-phase were constructed in metastable Ti-Mo alloys to examine phase stability, elastic property, and crystal structure ...
Mingjia Li, X. Min, K. Yao, F. Ye
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On the basis of the “-Mo-Ti-Mo-” linear unit along the specific β, β, and β directions, the cluster structures of α″-martensite and ω-phase were constructed in metastable Ti-Mo alloys to examine phase stability, elastic property, and crystal structure ...
Mingjia Li, X. Min, K. Yao, F. Ye
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International Journal of Materials Research, 2011
Abstract A generalization of the phase-field theory for multivariant martensitic phase transformations is suggested that allows one to vary martensite–martensite interface energy independent of energy for austenite–martensite interfaces. The finite element method is utilized to solve the coupled phase-field and elasticity equations. Width and energy of
Valery I. Levitas, Mahdi Javanbakht
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Abstract A generalization of the phase-field theory for multivariant martensitic phase transformations is suggested that allows one to vary martensite–martensite interface energy independent of energy for austenite–martensite interfaces. The finite element method is utilized to solve the coupled phase-field and elasticity equations. Width and energy of
Valery I. Levitas, Mahdi Javanbakht
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Reverse transformation from martensite into austenite in a medium-Mn steel
Scripta Materialia, 2019The mechanism of austenite reversion from martensite in a cold rolled medium‑manganese steel has been clarified. Both displacive and reconstructive transformation happens but at a specific temperature ranges.
De-han Yang, D. Wu, H. Yi
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Martensitic Transformations in Bochum
Angewandte Chemie, 1989Conference Reports: Martensitic transformations are first order structural phase transformations which occur in a range of crystalline solids. A recent meeting in this field in Bochum, FRG, is reviewed by N. Jost while W. Kaysser reports that Las Vegas was the scene of a conference on particle technology.
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Phase-field simulation of martensite microstructure in low-carbon steel
Acta Materialia, 2019We present three-dimensional phase-field simulations of martensite microstructure formation in low-carbon steel. In this study, a full set of 24 Kurdjumov-Sachs symmetry variants of martensite is considered.
O. Shchyglo +3 more
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2015
The formation of martensite is characterized by its athermal transformation kinetics, crystallographic features, and development of fine structure. This chapter describes the diffusionless, shear-type transformation of austenite to martensite and how it affects the morphology and microstructure of heat-treatable carbon steels.
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The formation of martensite is characterized by its athermal transformation kinetics, crystallographic features, and development of fine structure. This chapter describes the diffusionless, shear-type transformation of austenite to martensite and how it affects the morphology and microstructure of heat-treatable carbon steels.
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An explanation of the “martensite start”-“martensite finish” temperature interval
Solid State Communications, 1982Abstract Packing together the domains of transformed and untransformed material after the start of a martensitic transformation produces stress, the equilibrium proportions of the two phases being governed by a stress-strain equation. This equation, however, relates the volume of transformed material to the fundamental order parameters of the ...
A. Okazaki, R.D. Lowde
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Surface Upheavals, Pseudo Martensite, and Martensite Ghosts
Practical Metallography, 2005Abstract A survey is made on the application of some metallographic methods for the analysis of martensitic reactions. In this context the following aspects are discussed: Reverse reactions can be martensitic, to restore faultlessly the austenite, not fully reversible (defects accumulate), or diffusion controlled. In
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The martensitic transformation in stainless steels of the austenitic-martensitic class
Metal Science and Heat Treatment of Metals, 19601. Heating to 525–950°C after austenitizing at 1050°C reduces substantially the stability of austenite. Destabilization of austenite is explained by a depletion of the solid solution in chromium and carbon by chromium carbide precipitation. 2.
T. D. Kubyshkina +2 more
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