Internal friction study of intermetallic compound Fe3Al single crystals

被引：8

作者：

Nagy, A ^{[1
]}

Harms, U ^{[1
]}

Neuhäuser, H ^{[1
]}

机构：

[1] Tech Univ Carolo Wilhelmina Braunschweig, Inst Met Phys & Nukl Festkorperphys, D-38106 Braunschweig, Germany

来源：

DEFECTS AND DIFFUSION IN METALS: AN ANNUAL RETROSPECTIVE IV | 2002年 / 203-2卷

关键词：

delta-E-effect; elastic modulus; Fe3Al; Hasiguti relaxation; internal friction; mechanical spectroscopy; Snoek effect; Snoek-Koster relaxation; Zener relaxation;

D O I：

10.4028/www.scientific.net/DDF.203-205.257

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The temperature and magnetic field dependencies of internal friction and elastic modulus have been measured by means of the vibrating-reed technique for ferromagnetic single crystals of DO3 ordered Fe3Al around the stoichiometric composition. The residual content of carbon causes the expected variation of the Snoek peak around 500 K with heat treatments (formation of Fe-Al-carbide and possible interaction with vacancies). A slight shift of the Snoek peak with quenching and an effect of the magnetic field on the Snoek peak is noticed, indicating an additional short-range chemical C-Al interaction superposed on the long-range elastic strain interaction. The elastic modulus shows a pronounced DeltaE-effect whose temperature dependence changes with thermal treatments and during an applied magnetic field. Besides the Zener peak at about 900 K, additional relaxation peaks occur after plastic deformation and disappear after high temperature annealing. They probably correspond to Hasiguti (at 190 K) and Snoek-Koester (at 570 K) relaxations.

引用

页码：257 / 260

页数：4

共 18 条

[11] EFFECT OF CHROMIUM ON PROPERTIES OF FE3AL [J].

MCKAMEY, CG ;

HORTON, JA ;

LIU, CT .

JOURNAL OF MATERIALS RESEARCH, 1989, 4 (05) :1156-1163

[12]

NAGY A, IN PRESS MAT SCI E A

[13]

Nowick A. S., 1972, ANELASTIC RELAXATION

[14] Machinable iron aluminides containing carbon [J].

Prakash, U ;

Sauthoff, G .

SCRIPTA MATERIALIA, 2001, 44 (01) :73-78

[15] INTERNAL-FRICTION IN DEFORMED PURE IRON [J].

RITCHIE, IG ;

DUFRESNE, JF ;

MOSER, P .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1978, 50 (02) :617-626

[16] DISLOCATION RELAXATION PROCESSES IN BODY-CENTERED CUBIC METALS [J].

SEEGER, A ;

WUTHRICH, C .

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA B-GENERAL PHYSICS RELATIVITY ASTRONOMY AND MATHEMATICAL PHYSICS AND METHODS, 1976, 33 (01) :38-75

[17] Emerging applications of intermetallics [J].

Stoloff, NS ;

Liu, CT ;

Deevi, SC .

INTERMETALLICS, 2000, 8 (9-11) :1313-1320

[18] INTERNAL FRICTION OF IRON-ALUMINIUM ALLOYS CONTAINING CARBON [J].

TANAKA, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1971, 30 (02) :404-&

← 1 2 →