Results 241 to 250 of about 60,100 (278)
Some of the next articles are maybe not open access.
Matériaux & Techniques, 2000
Les caracteristiques microstructurales et cinetiques de la transformation martensitique induite par deformation plastique de l'acier AISI 304 ont ete etablies par diffraction des rayons X en dispersion d'energie couplee aux analyses metallographiques au M.E.B.
H. Bargui, H. Sidhom, Z. Tourki
openaire +1 more source
Les caracteristiques microstructurales et cinetiques de la transformation martensitique induite par deformation plastique de l'acier AISI 304 ont ete etablies par diffraction des rayons X en dispersion d'energie couplee aux analyses metallographiques au M.E.B.
H. Bargui, H. Sidhom, Z. Tourki
openaire +1 more source
Martensit und Metallographie / Martensite and Metallography
Practical Metallography, 2000Martensite and metallography were the two subject areas in which Hermann Schumann (1924 -1989) achieved great respect. An example of which is his work on y ↔ e -transformations, the fundamentals and technical exploitation of which he combined in the development of new materials [1]. This paper is dedicated to his memory.
openaire +1 more source
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.
openaire +1 more source
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.
openaire +1 more source
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.
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
Relaxation Rotation during Martensitic Transformation and Scattering of the Martensite Texture
Doklady Physics, 2023In the our crystallographic theory of martensitic transformation, a new characteristic of martensitic transformation appears – a relaxation rotation, which was not in the generally accepted phenomenological theory of martensitic transformation. The relaxation rotation is necessary to obtain an invariant plane.
V. M. Gundyrev +2 more
openaire +1 more source
2013
Abstract Martensitic steels are produced by quenching carbon steel from the austenite phase into martensite. This chapter provides information on the composition, microstructures, processing, deformation mechanisms, mechanical properties, hot forming, tempering, and special attributes of martensitic steels.
openaire +1 more source
Abstract Martensitic steels are produced by quenching carbon steel from the austenite phase into martensite. This chapter provides information on the composition, microstructures, processing, deformation mechanisms, mechanical properties, hot forming, tempering, and special attributes of martensitic steels.
openaire +1 more source
Defect modelling of martensitic interfaces in plate martensite
Materials Science and Engineering: A, 2008Abstract A physical model of martensitic transformations describing the structure of the parent–martensite interface and the transformation mechanism is presented. This approach is used here to model martensitic transformations in lath and plate martensite. The habit plane comprises coherent (1 1 1) γ //(0 1 1) α terraces where the coherency strains
X. Ma, R.C. Pond
openaire +1 more source
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
openaire +2 more sources