Results 151 to 160 of about 27,569 (205)
Some of the next articles are maybe not open access.
Fluctuationless mechanism for martensitic transformations
Physical Review B, 1993A fluctuationless mechanism for martensitic transformations consisting of the appearance and development of a lattice instability triggered by defects is presented. A number of properties associated with martensitic transformations are qualitatively explained. As a quantitative example, the theory of the displacive \ensuremath{\beta}-\ensuremath{\omega}
, Vul, , Harmon
openaire +2 more sources
The simultaneous occurrence of martensitic transformation and reversion of martensite
Materials Science and Engineering: A, 2014Abstract We use a 3D elastoplastic phase-field model to study the simultaneous occurrence of martensitic transformation as well as the reversion of martensite in steels under uni-axial tension. Our results show that although martensite nucleates and grows as a single lath (variant), it reverts and splits into two independent martensite laths, due to “
Yeddu HK, Lookman T, Saxena T
openaire +2 more sources
Martensitic Transformations in Constrained Films
Journal de Physique IV (Proceedings), 2002The evolution of martensitic microstructure and stress in a constrained film coupled with a substrate under cooling and heating is considered. Thermodynamic analysis has done using the special phase diagrams constructed in coordinates temperature-film/ substrate misfit.
A. L. Roytburd, J. Slutsker
openaire +1 more source
2004
Martensite is named after the German metallographer Adolph Martens who, in about 1890, was the first to describe its structure and formation.
openaire +1 more source
Martensite is named after the German metallographer Adolph Martens who, in about 1890, was the first to describe its structure and formation.
openaire +1 more source
Martensitic transformations in alloys with martensite which ages
Metal Science and Heat Treatment, 19641. Molybdenum decreases the temperature interval in which martensite is formed in Fe+20% Ni alloys, while cobalt increases it. The additional elements investigated here affect the temperature interval of the martensitic transformation in the same way as that in steel. 2.
A. P. Gulyaev, N. I. Karchevskaya
openaire +1 more source
The nature of martensitic transformations
Materials Science and Engineering, 1979Abstract Theoretical concepts are described which explain the structural and kinetic peculiarities of martensitic transformations. A martensitic transformation is considered as a first order phase transition in solids that proceeds under conditions where the initial phase maintains metastability.
A.L. Roitburd, G.V. Kurdjumov
openaire +1 more source
The martensitic transformation: mechanisms and crystallography
Philosophical Magazine A, 2002Abstract The atom movements during the martensitic transformation are described by a combination of two shears: a long-wave primary and a secondary shuffle type shear which occur simultaneously. The primary and part of the secondary shear are equivalent to the Bain distortion, and the rest of the secondary shear corresponds to the lattice invariant ...
openaire +1 more source
BIFURCATION AND STABILITY OF MARTENSITIC TRANSFORMATION DYNAMICS
International Journal of Bifurcation and Chaos, 2008In this paper, we have studied the mathematical properties and their physical implications of a system of nonlinear ordinary differential equations with two variables and six parameters, which was proposed to model the martensitic transformation of shape memory alloys.
Lihua Jin, Yongzhong Huo
openaire +1 more source
The Martensitic Transformation in Cobalt
Journal of Applied Physics, 1967The properties of the fcc to hcp transformation in cobalt single-crystal whiskers have been determined. Studies of the crystallographic properties and dislocation structure using optical, standard x-ray diffraction, and high-resolution x-ray diffraction topographic techniques are herein reported.
R. T. Johnson, R. D. Dragsdorf
openaire +1 more source
On the nucleation of the martensite transformation
Nature, 1978THE standard description of the austenite–martensite transformation includes the statement that once the material reaches the martensite start temperature, or below, then the transformation occurs immediately1. Hence, if a nucleus is present in the material, then growth occurs to an extent determined by the transformation temperature.
J. M. GALLIGAN, T. GAROSSHEN
openaire +1 more source