THE STUDY OF ADIABATIC SHEAR-BAND INSTABILITY IN A PEARLITIC 4340-STEEL USING A DYNAMIC PUNCH TEST

被引：77

作者：

ZUREK, AK

机构：

[1] Los Alamos National Laboratory, Los Alamos, 87544, NM

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1994年 / 25卷 / 11期

关键词：

D O I：

10.1007/BF02648867

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The formation of adiabatic shear band instabilities in a pearlitic 4340 steel using a dynamic punch test has been studied. The dynamic punch-impact test produced white-etching adiabatic shear bands. The average strain of 0.5 was sufficient to produce adiabatic shear bands in this steel at an average strain rate of 18,000 s(-1). Nanohardness variations found across the adiabatic shear band are thought to be caused by the fragmentation and spheroidization of the Fe3C and the overall deformation and work hardening of the pearlitic microstructure. The cracks formed at the termination of the adiabatic shear band caused the sample to fracture in a ductile mode.

引用

页码：2483 / 2489

页数：7

共 27 条

[11]

HIRANO KI, 1963, T METALL SOC AIME, V227, P950

[12] RESPONSE OF VARIOUS METALS TO LARGE TORSIONAL STRAINS OVER A LARGE RANGE OF STRAIN RATES .1. DUCTILE METALS [J].

JOHNSON, GR ;

HOEGFELDT, JM ;

LINDHOLM, US ;

NAGY, A .

JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME, 1983, 105 (01) :42-47

[13]

LANKFORD G, 1970, METALL T, V1, P465

[14]

Lindholm U.S., 1983, MAT BEHAV HIGH STRES, P61, DOI DOI 10.1007/978-1-4613-3787-4_4

[15]

MESCALL JF, 1989, MLT TR89104 US ARM M

[16]

Meyer L.W., 1986, METALLURGICAL APPL S, V1st ed., P657

[17] EFFECT OF METALLURGICAL PARAMETERS ON SHEAR BAND FORMATION IN LOW-CARBON (APPROXIMATELY 0.20 WT PCT) STEELS [J].

MEYERS, MA ;

WITTMAN, CL .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1990, 21 (12) :3153-3164

[18]

OLIVER WC, 1986, ASTM STP, V889, P90

[19]

ROBBINS JL, 1964, J IRON STEEL I, V202, P804

[20]

ROGERS HC, 1983, MATERIAL BEHAVIOR HI, P101

← 1 2 3 →