THE STRAIN-RATE SENSITIVITY OF FLOW-STRESS AND STRAIN-HARDENING RATE IN METALLIC MATERIALS

被引:18
作者
TIRUPATAIAH, Y
SUNDARARAJAN, G
机构
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1994年 / 189卷 / 1-2期
关键词
D O I
10.1016/0921-5093(94)90407-3
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The objectives of the present investigation are to characterize the high strain rate (similar or equal to 10(4) s(-1)) plastic flow behaviour of a number of metals and alloys and also to compare the dynamic flow behaviour with that at static strain rates (similar or equal to 10(-2) s(-1)). Such a comparison has provided information on the strain-rate sensitivity of both the now stress and the strain-hardening rate for a number of pure metals, solid solutions and dispersion-strengthened alloys. On the basis of the present work, qualitative conclusions have been inferred on the effect of strain rate on the resistance offered by various types of thermally activatable obstacles to dislocation motion.
引用
收藏
页码:117 / 127
页数:11
相关论文
共 40 条
[1]  
ARMSTRONG PE, 1989, I PHYSICS C SERIES, V102
[2]   TEMPERATURE AND STRAIN-RATE DEPENDENCE OF SHEAR STRENGTH OF MILD STEEL [J].
CAMPBELL, JD ;
FERGUSON, WG .
PHILOSOPHICAL MAGAZINE, 1970, 21 (169) :63-+
[3]   STRAIN RATE HISTORY EFFECTS AND OBSERVATIONS OF DISLOCATION SUBSTRUCTURE IN ALUMINUM SINGLE-CRYSTALS FOLLOWING DYNAMIC DEFORMATION [J].
CHIEM, CY ;
DUFFY, J .
MATERIALS SCIENCE AND ENGINEERING, 1983, 57 (02) :233-247
[4]  
DOWLING AR, 1970, J I MET, V98, P215
[5]  
Follansbee P S, 1986, METALLURGICAL APPL S, P451
[6]   A CONSTITUTIVE DESCRIPTION OF THE DEFORMATION OF COPPER BASED ON THE USE OF THE MECHANICAL THRESHOLD STRESS AS AN INTERNAL STATE VARIABLE [J].
FOLLANSBEE, PS ;
KOCKS, UF .
ACTA METALLURGICA, 1988, 36 (01) :81-93
[7]   AN ANALYSIS OF THE LOW-TEMPERATURE, LOW AND HIGH STRAIN-RATE DEFORMATION OF TI-6AL-4V [J].
FOLLANSBEE, PS ;
GRAY, GT .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1989, 20 (05) :863-874
[8]   LOW-TEMPERATURE AND HIGH-STRAIN-RATE DEFORMATION OF NICKEL AND NICKEL CARBON ALLOYS AND ANALYSIS OF THE CONSTITUTIVE BEHAVIOR ACCORDING TO AN INTERNAL STATE VARIABLE MODEL [J].
FOLLANSBEE, PS ;
HUANG, JC ;
GRAY, GT .
ACTA METALLURGICA ET MATERIALIA, 1990, 38 (07) :1241-1254
[9]  
FOLLANSBEE PS, 1989, I PHYS C SER, V102, P213
[10]  
FOLLANSBEE PS, 1988, IMPACT LOADING DYNAM, V1, P315