On the temperature dependence of the yield stress in Fe3Al single crystals in the range of 300 to 500 K

被引：7

作者：

Brinck, A ^{[1
]}

Neuhäuser, H ^{[1
]}

机构：

[1] TU Braunschweig, Inst Met Phys & Nukl Festkorperphys, D-38106 Braunschweig, Germany

来源：

INTERMETALLICS | 2000年 / 8卷 / 9-11期

关键词：

iron aluminides (based on Fe3Al; plastic deformation mechanisms; work-hardening; yield stress; microscopy; various;

D O I：

10.1016/S0966-9795(00)00042-X

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 temperature dependence of the critical resolved shear stress of Fe3Al single crystals exhibits not only the well-known high temperature anomaly with rising stress but also a sharp decrease of the yield stress in a narrow temperature range somewhat above ambient temperature. This drop is connected with a characteristic change of the operative deformation mechanism, resulting in a specific behaviour of slip line evolution on the sample surface, which is monitored by means of an optical microscope during deformation. In addition to the yield stress, the strain rate sensitivity and the work hardening rate show characteristic changes in this particular temperature range. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1019 / 1024

页数：6

共 31 条

[1] Structure and development of slip lines during plastic deformation of the intermetallic phases Fe3Al and CuZn [J].

Brinck, A ;

Engelke, C ;

Kopmann, W ;

Neuhauser, H .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 240 :180-187

[2] On pseudoelasticity in single crystals of the intermetallic compound Fe3Al [J].

Brinck, A ;

Engelke, C ;

Neuhauser, H .

SCRIPTA MATERIALIA, 1997, 37 (05) :569-574

[3] Dislocation processes in Fe3Al investigated by transmission electron, scanning force and optical microscopy [J].

Brinck, A ;

Engelke, C ;

Neuhäuser, H ;

Molénat, G ;

Rösner, H ;

Langmaack, E ;

Nembach, E .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 258 (1-2) :32-36

[4] Quantitative AFM investigation of slip line structure in Fe3Al single crystals after deformation at various temperatures [J].

Brinck, A ;

Engelke, C ;

Neuhäuser, H .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 258 (1-2) :37-41

[5] THE YIELD POINT OF A SUPER-LATTICE [J].

BROWN, N .

PHILOSOPHICAL MAGAZINE, 1959, 4 (42) :693-704

[6]

CAILLARD D, 1995, MATER RES SOC S P, V6, P17

[7] STATIC AND DYNAMIC STRAIN-AGING IN D0(3)-ORDERED FE3AL [J].

ENGELKE, C ;

NEUHAUSER, H .

SCRIPTA METALLURGICA ET MATERIALIA, 1995, 33 (07) :1109-1115

[8] TWINNING AND PSEUDO-ELASTICITY IN SINGLE-CRYSTAL FE-AL ALLOYS [J].

GUEDOU, JY ;

RIEU, J .

SCRIPTA METALLURGICA, 1978, 12 (10) :927-930

[9] DEFORMATION OF FE3AL0.8SI0.2 WITH DO3 STRUCTURE [J].

HANADA, S ;

WATANABE, S ;

SATO, T ;

IZUMI, O .

TRANSACTIONS OF THE JAPAN INSTITUTE OF METALS, 1981, 22 (12) :873-881

[10] ORIENTATION DEPENDENCE OF YIELD STRESS AND OPERATIVE SLIP SYSTEMS OF BETA-CUZN SINGLE-CRYSTALS AT LOW-TEMPERATURES [J].

HANADA, S ;

IZUMI, O .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1977, 40 (02) :589-598

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