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Structure Induced Anelasticity in Iron Intermetallic Compounds and Alloys
von: Igor S. Golovin
Materials Research Forum LLC, 2018
ISBN: 9781945291654 , 256 Seiten
Format: PDF
Kopierschutz: Wasserzeichen
Preis: 125,00 EUR
Cover
1
Table of Contents
6
Preface
8
1
12
Introduction
12
References
22
2
25
Materials and Methods
25
2.1 Materials
25
2.2 Methods
29
2.2.1 Mechanical spectroscopy
29
2.2.2 Neutron diffraction
34
References
40
3
43
Structure and Anelasticity of Fe-Al, Fe-Ga and Fe-Ge Intermetallic Compounds
43
3.1 Equilibrium and non-equilibrium structures of Fe3Me - type alloys
43
3.2 Neutron diffraction study of atomic ordering in Fe3Al-type alloys
50
3.3 Tailoring magnetostriction in intrinsic Fe-27Ga alloy by isothermal annealing
62
3.4 Temperature dependent anelastic effects in Fe3Me - type alloys
76
References
88
4
97
Anelastic Relaxation Mechanisms in Iron and its Alloys
97
4.1 Thermally activated relaxation effects due to point defects
98
4.1.1 The Snoek relaxation
98
4.1.2 The Snoek-type relaxation
101
4.1.3 The Zener relaxation
105
4.2 Anelastic relaxation in binary Fe-Al alloys
107
4.2.1 Snoek-type relaxation
107
4.2.2 Thermally activated X-relaxation
110
4.2.3 The Zener relaxation
113
4.2.4 High temperature relaxation: dislocations and grain boundaries
118
4.2.5 Low temperature relaxation: effect of deformation
120
4.2.6 Hysteretic effects
124
4.2.7 Alloys with 10-12 at.%Al
128
4.2.8 Amplitude dependent damping in a single crystal Fe3Al sample
136
4.3 Anelastic relaxation in binary Fe-Ga alloys
142
4.3.1 Snoek-type relaxation
143
4.3.2 Zener relaxation
148
4.3.3 Transient effects due to phase transitions
151
4.3.4 Isothermal frequency dependent damping
157
4.4 Anelastic relaxation in binary Fe-Ge alloys
161
4.4.1 Disordered b.c.c. structures (Fe-3Ge and Fe-8Ge)
161
4.4.2 Disordered and ordered b.c.c. structures (Fe-12Ge and Fe-19Ge)
164
4.4.3 Hexagonal structures (Fe-22Ge and Fe-27Ge)
168
4.5. Concluding remarks
174
References
176
5
187
Ternary Fe-based Alloys: Structure Induced Anelasticity
187
5.1 Ternary Fe-Ga based alloys
187
5.1.1 Fe-Ga-Tb alloys
188
5.1.2 Fe-Ga-Al alloys
201
5.1.3 Fe-Ga-(Ni, Co) alloys *
212
5.2 Fe-Al based alloys
217
5.2.1 Fe(Al(Me Alloys, Me = Nb, Ta, Ti, Zr
218
5.2.2 Fe(Al(Cr Alloys
220
5.2.3 Fe(Al((Si, Co, Ge, Mn) Alloys
231
5.3 Fe-Mn based alloys
237
References
250
Keyword index
256
About the authors
258
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