Anelasticity
Mostrando 1-5 de 5 artigos, teses e dissertações.
-
1. Anelasticity of Phase Transitions and Magnetostriction in Fe-(27-28%)Ga Alloys
Several aspects of anelastic behavior of Fe-(27-28%)Ga-Tb alloys are considered in this paper: (i) the phase transitions from a metastable to an equilibrium phase and phase transitions between equilibrium phases at higher temperatures in as cast alloys, (ii) the nature of corresponding three transient anelastic effects, (iii) the formation of an intrinsic co
Mat. Res.. Publicado em: 07/06/2018
-
2. Low-Temperature Anelastic Property of Nanocrystalline Ag Fabricated by Gas Deposition Method
It was reported that the internal friction (Q-1) of nanocrystalline (n-) Au and n-Cu showed a rapid increase linearly with temperature above ~200 K. Since the rapid increase in Q-1 decreased with the progress in the grain growth, it was suggested that the anelasticity of grain boundaries in n-Au and n-Cu was thermally activated above ~200 K. In order to purs
Mat. Res.. Publicado em: 04/06/2018
-
3. Diffusion and anelastic relaxation due to hydrogen in solid solution in Nb-Ti and Nb-Zr alloys. / Difusão e relaxação anelástica devido ao hidrogênio em solução sólida em ligas de Nb-Ti e Nb-Zr.
We study the effect of hydrogen dissolved interstitially in niobium-titanium and niobium-zirconium alloys. In the niobimn-titanium alloys, the logarithmic decrement was studied by internal friction measurements in a torsion pendulum with frequency about 4.0 Hz, on pure and hydrogen doped samples. Our results showed the interaction of hydrogen with the metall
Publicado em: 1993
-
4. Study of the anelastic relaxation multi-spectra due to interstitial deffects in Nb-Zr and Nb-Ti alloys. / Estudo de multi-espectro de relaxação anelástica devido a defeitos intersticiais em ligas de Nb-Zr e Nb-Ti.
As medidas de atrito interno tem sido muito usadas para o estudo de relaxações anelásticas devido à intersticiais em metais ou ligas metálicas. Estudou-se o comportamento de ligas de Nb-Zr dopadas com Oxigênio e ligas de Nb-Ti dopadas com Oxigênio e Nitrogênio, através de medidas simultâneas de atrito interno (energia dissipada por oscilação do P
Publicado em: 1988
-
5. Attenuation of Seismic Waves by Grain Boundary Relaxation
Experimental observations of the attenuation of elastic waves in polycrystalline ceramics and rocks reveal an attenuation mechanism, called grain boundary relaxation, which is likely to be predominant cause of seismic attenuation in the earth's mantle. For this mechanism, the internal friction (the reciprocal of the “intrinsic Q” of the material) depends