Results 51 to 60 of about 4,245 (210)

Macroscopic energy barrier and rate-independent hysteresis in martensitic transformations [PDF]

, 2019
A thermodynamic theory for the lower-bound hysteresis in martensitic transformations is developed. It is shown that the elastic energy generated by the transformation-induced crystal lattice misfit makes the system free energy a nonlinear function of the
Wang, Yu U., Khachaturyan, Armen G., Jin, Yongmei M.   +2 more
core   +1 more source

THE DUALISM OF THE VACANCIES NATURE IN NONEQUILIBRIUM SYSTEMS

East European Journal of Physics, 2016
Based on the method of phase diagrams martensitic transformations, the analysis of conditions of occurrence of martensitic transformations (MP) at different temperatures with the participation of vacancies in pure iron. Built versus temperature MT values 
I. N. Laptev, O. O. Parkhomenko, V. I. Tkachenko   +2 more
doaj  

Tunable Martensitic Transformation and Magnetic Properties of Sm-Doped NiMnSn Ferromagnetic Shape Memory Alloys

Crystals, 2021
NiMnSn ferromagnetic shape memory alloys exhibit martensitic transformation at low temperatures, restricting their applications. Therefore, this is a key factor in improving the martensitic transformation temperature, which is effectively carried out by ...
Najam ul Hassan, Mohsan Jelani, Ishfaq Ahmad Shah, Khalil Ur Rehman, Abdul Qayyum Khan, Shania Rehman, Muhammad Jamil, Deok-kee Kim, Muhammad Farooq Khan   +8 more
doaj   +1 more source

Crystalline damage growth during martensitic phase transformations [PDF]

, 2007
A thermomechanical model is developed within a large deformation setting in order to simulate the interactions between martensitic phase transformations and crystalline damage growth at the austenitic grain level.
Suiker, A.S.J., Turteltaub, S.R.
core   +1 more source

A theoretical review of the operation of vibratory stress relief with particular reference to the stabilization of large-scale fabrications [PDF]

, 2011
Vibratory stress relief (VSR) is widely used on large welded fabrications to stabilize the structures so that they do not distort during further machining or during operational duty.
Walker, C., C Walker
core   +1 more source

Transforming martensite in NiTi within nanoseconds

JPhys Materials
Martensitic transformations enable various emerging applications like the shape memory effect and elastocaloric applications in NiTi. Increasing the speed of this transformation can shorten the response time for actuation and increase the power density ...
Klara Lünser, Bruno Neumann, Daniel Schmidt, Yuru Ge, Daniel Hensel, Mallika Khosla, Peter Gaal, Sebastian Fähler   +7 more
doaj   +1 more source

Design and Mechanical Behavior of Martensitic Alloys

Metals
In the world of materials, few phenomena are as intriguing and simultaneously as useful as martensitic phase transformations [...]
Matthias Bönisch
doaj   +1 more source

Magnetic and martensitic transformations in Ni48Co2Mn35In15 melt-spun ribbons

AIP Advances, 2018
As-solidified Ni48Co2Mn35In15 ribbons were prepared through the melt-spinning method, and their structural, magnetic, magnetocaloric properties, and martensitic transformations were investigated. The inverse martensitic transformation temperature (TA=325
Sudip Pandey, Abdiel Quetz, P. J. Ibarra-Gaytan, C. F. Sanchez-Valdes, Anil Aryal, Igor Dubenko, J. L. Sanchez Llamazares, Shane Stadler, Naushad Ali   +8 more
doaj   +1 more source

Internal Friction and Dynamic Modulus in Ultra-High Temperature Ru-Nb Functional Intermetallics / Tarcie Wewnętrzne I Moduł Dynamiczny W Bardzo Wysoko Temperaturowych Funkcjonalnych Związkach Międzymetalicznych Z Układu Ru-Nb

Archives of Metallurgy and Materials, 2015
In the present work we have studied the high-temperature shape memory alloys based on the Ru-Nb system by using two mechanical spectrometers working in temperature ranges from 200 to 1450ºC and -150 to 900ºC.
Nó M.L., Dirand L., Denquin A., San Juan J.   +3 more
doaj   +1 more source

FeRh ground state and martensitic transformation

Physical Review B, 2018
Cubic B2 FeRh exhibits a metamagnetic transition [(111) antiferromagnet (AFM) to ferromagnet (FM)] around 353 K and remains structurally stable at higher temperatures. However, the calculated zero-Kelvin phonons of AFM FeRh exhibit imaginary modes at M-points in the Brillouin zone, indicating a premartensitic instability, which is a precursor to a ...
Zarkevich, Nikolai, Johnson, Duane
openaire   +4 more sources