Internal friction in Fe-Ga alloys at elevated temperatures

被引：17

作者：

Golovin, I. S. ^{[1
]}

Palacheva, V. V. ^{[1
]}

Cifre, J. ^{[2
]}

Jiang, C. ^{[3
]}

机构：

[1] Natl Univ Sci & Technol MISIS, Leninsky Ave 4, Moscow 119049, Russia

[2] Univ Illes Balears, Ctra Valldemossa,Km 7-5, E-07122 Palma de Mallorca, Spain

[3] Beihang Univ, Xueyuan Rd 37, Beijing 100191, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 785卷

基金：

俄罗斯基础研究基金会;

关键词：

Fe-Ga; Internal friction; Snoek and Zener peaks; Phase transition; Transient anelasticity; DISORDER PHASE-TRANSITION; BETA-RELAXATION; IN-SITU; AL; ANELASTICITY; TB; MAGNETOELASTICITY; MAGNETOSTRICTION; MECHANISMS; FE3GA;

D O I：

10.1016/j.jallcom.2019.01.265

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The paper studies amplitude-independent thermally-activated and transient effects in as-cast Fe-(8 -33)%Ga alloys in a temperature range from 0 to 600 degrees C and frequencies from 0.1 to 30 Hz using a dynamic mechanical analyser. The origin of the recorded anelastic effects is discussed based on both earlier publications and new, most systematic, data obtained in this paper. Activation energies and characteristic relaxation time are evaluated and analysed to conclude about the influence of Ga content on Zener relaxation, possible overlapping of Snoek-type relaxation with another, still not well defined, mechanism. The transient effect along with a sharp increase in the modulus is a sensitive tool to detect transition from metastable to stable structure in the Fe-Ga alloys. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：1257 / 1263

页数：7

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