نتایج جستجو برای: martensitic transformation
تعداد نتایج: 222726 فیلتر نتایج به سال:
Employing the Ginzburg-Landau phase-field theory, a new coupled dynamic thermo-mechanical 3D model has been proposed for modeling the cubic-to-tetragonal martensitic transformations in shape memory alloy (SMA) nanostructures. The stress-induced phase transformations and thermo-mechanical behavior of nanostructured SMAs have been investigated. The mechanical and thermal hysteresis phenomena, loc...
2014 The technique of « monochromatic Laue » X-ray scattering has been used to carry out a comparative study of the different phases of RbAlF4 and KA1F4. In both materials diffuse scattering has been observed. In the former case where displacive transitions occur, the diffuse scattering is surrounding the superlattice Bragg peaks rising below Tc and is well interpreted in the light of the phono...
A phase-field theory of transformations between martensitic variants and multiple twinning within martensitic variants is developed for large strains and lattice rotations. It resolves numerous existing problems. The model, which involves just one order parameter for the description of each variant-variant transformation and multiple twinnings within each martensitic variant, allows one to pres...
Within the framework of a systems approach, the design of a high performance stainless steel integrated processing/structure/property/performance relations with mechanistic computational models. Using multicomponent thermodynamic and diffusion software platforms, the models were integrated to design a carburizable, secondary-hardening, martensitic stainless steel for advanced gear and bearing a...
The magnetic properties and structural phase transformations of Heusler alloys Ni2+ Mn1 Ga and Ni2 Mn1+ 2Ga1+ 2 were investigated. It was found that the martensitic transformation temperature increases and the Curie temperature decreases with decreasing Mn concentration in the Ni2+ Mn1 Ga system, but the magnetic properties decrease faster than those do in the Ni2 Mn1+ 2Ga1+ 2 system. It sugges...
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