Microstructural development of adiabatic shear bands formed by ballistic impact in a WELDALITE 049 alloy

被引：33
作者：
Lee, CG [1 ]
Park, WJ
Lee, S
Shin, KS
机构：
[1] Korea Inst Machinery & Mat, Dept Mat Engn, Changwon 641010, South Korea
[2] Res Inst Ind Sci & Technol, Adv Mat Div, Pohang 790600, South Korea
[3] Pohang Univ Sci & Technol, Ctr Adv Aerosp Mat, Pohang 790784, South Korea
[4] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151742, South Korea
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1998年 / 29卷 / 02期
关键词：
D O I：
10.1007/s11661-998-0128-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The object of the present study is to investigate the microstructural development of the adiabatic shear band formed by ballistic impact in a WELDALITE 049 alloy. The microstructure of the shear band was examined by optical microscopy and transmission electron microscopy. The results indicated that the adiabatic shear band consisted of fine recrystallized grains with a high dislocation density. This microstructure was considered to be formed in an extremely short time by the combined effects of the highly localized shear deformation and the high-temperature rise that occurred within the shear band. However, no precipitates could be observed in the interior of the grains, since the temperature rise in the shear band formation process was inferred to be above 460 degrees C and below the solidus temperature. Dynamic recrystallization was suggested as a possible mechanism to explain the microstructural development of the adiabatic shear band formed in the WELDALITE alloy.
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收藏
页码：477 / 483
页数：7
相关论文
共 29 条
[1]  
ABIS S, 1987, P 4 INT AL LITH C
[2]   MECHANICS OF PENETRATION OF PROJECTILES INTO TARGETS [J].
BACKMAN, ME ;
GOLDSMITH, W .
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE, 1978, 16 (01) :1-99
[3]  
Backmann ME., 1973, Metallurgical effects at high rates of strain, P531, DOI [10.1007/978-1-4615-8696-8_30, DOI 10.1007/978-1-4615-8696-8_30]
[4]  
BEATY JH, 1991, 9054 MTL TR US ARM M
[5]  
BEDFORD AJ, 1974, J AUST I MET, V19, P61
[6]   MICROSCOPIC OBSERVATIONS OF ADIABATIC SHEAR BANDS IN 3 DIFFERENT STEELS [J].
CHO, K ;
CHI, YC ;
DUFFY, J .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1990, 21 (05) :1161-1175
[7]  
CHO K, 1992, ACTA METALL, V41, P923
[8]  
CLIFTON RF, 1980, MATERIALS RESPONSE U, P129
[9]  
HARTHERLY M, 1984, SCRIPTA METALL, V18, P449
[10]   MEASUREMENT OF THE TEMPERATURE PROFILE DURING SHEAR BAND FORMATION IN STEELS DEFORMING AT HIGH-STRAIN RATES [J].
HARTLEY, KA ;
DUFFY, J ;
HAWLEY, RH .
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1987, 35 (03) :283-301
123