CYCLIC STRESS-STRAIN RESPONSE OF POLYCRYSTALLINE COPPER IN A WIDE-RANGE OF PLASTIC STRAIN AMPLITUDES

被引：59

作者：

POLAK, J

OBRTLIK, K

HAJEK, M

VASEK, A

机构：

[1] Institute of Physical Metallurgy, Czechoslovak Academy of Sciences

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1992年 / 151卷 / 01期

关键词：

D O I：

10.1016/0921-5093(92)90177-3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Polycrystalline copper was cyclically strained with constant plastic strain amplitude from a very wide interval (3 x 10(-6)-1 x 10(-2). Fatigue hardening-softening curves and the plot of the loop shape parameter vs. the number of cycles were evaluated. Fatigue softening observed in low amplitude cycling was studied in detail. Measurements of the loop shape parameter which indicated the cyclic slip localization were accompanied by surface relief observations and electron microscope observations of the dislocation structure. Several mechanisms of the fatigue softening were considered. The basic cyclic stress-strain curve was evaluated and the difference between this curve and curves using apparent saturation values of the stress amplitude were discussed.

引用

页码：19 / 27

页数：9

共 29 条

[1] THE DEPENDENCE OF DISLOCATION MICROSTRUCTURE ON PLASTIC STRAIN AMPLITUDE IN CYCLICALLY STRAINED COPPER SINGLE-CRYSTALS [J].

ACKERMANN, F ;

KUBIN, LP ;

LEPINOUX, J ;

MUGHRABI, H .

ACTA METALLURGICA, 1984, 32 (05) :715-725

[2]

BUCHINGER L, 1984, PHILOS MAG A, V50, P275, DOI 10.1080/01418618408244227

[3] MECHANISM OF FRACTURE PRODUCED BY FATIGUE CYCLING WITH A POSITIVE MEAN STRESS IN COPPER [J].

ECKERT, R ;

LAIRD, C ;

BASSANI, J .

MATERIALS SCIENCE AND ENGINEERING, 1987, 91 :81-88

[4] CYCLIC STRESS-STRAIN RESPONSE OF FCC METALS AND ALLOYS .1. PHENOMENOLOGICAL EXPERIMENTS [J].

FELTNER, CE ;

LAIRD, C .

ACTA METALLURGICA, 1967, 15 (10) :1621-&

[5] THE CYCLIC STRESS-STRAIN RESPONSE OF COPPER AT LOW STRAINS .1. CONSTANT AMPLITUDE TESTING [J].

FIGUEROA, JC ;

BHAT, SP ;

DELAVEAUX, R ;

MURZENSKI, S ;

LAIRD, C .

ACTA METALLURGICA, 1981, 29 (10) :1667-1678

[6] FORMATION OF DISLOCATION-STRUCTURES DURING CYCLIC DEFORMATION OF FCC CRYSTALS .1. FORMATION OF PSBS IN CRYSTALS ORIENTED FOR SINGLE-SLIP [J].

JIN, NY .

ACTA METALLURGICA, 1989, 37 (07) :2055-2066

[7] FATIGUE OF POLYCRYSTALLINE COPPER AT CONSTANT AND VARIABLE PLASTIC STRAIN AMPLITUDES [J].

KUOKKALA, VT ;

KETTUNEN, P .

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 1985, 8 (03) :277-285

[8]

LLANES L, 1990, MAT SCI ENG A-STRUCT, V128, pL9

[9] EFFECT OF MEAN STRESS ON THE LOW-AMPLITUDE CYCLIC STRESS-STRAIN CURVE OF POLYCRYSTALLINE COPPER [J].

LUKAS, P ;

KUNZ, L ;

WEISS, B ;

STICKLER, R ;

HESSLER, W .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1989, 118 :L1-L4

[10] IS THERE A PLATEAU IN THE CYCLIC STRESS-STRAIN CURVES OF POLYCRYSTALLINE COPPER [J].

LUKAS, P ;

KUNZ, L .

MATERIALS SCIENCE AND ENGINEERING, 1985, 74 (01) :L1-L5

← 1 2 3 →