ULTRASONIC FATIGUE OF AN AUSTENITIC STAINLESS-STEEL

被引：3

作者：

HORSEWELL, A

HANSSON, I

机构：

[1] Laboratory of Applied Physics I, Technical University of Denmark, Lynggy, DK-2800

来源：

FATIGUE OF ENGINEERING MATERIALS AND STRUCTURES | 1979年 / 2卷 / 01期

关键词：

D O I：

10.1111/j.1460-2695.1979.tb01346.x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Abstract This investigation into the fatigue of a commercial austenitic stainless steel (UHB 3 MM) at ultrasonic frequencies (20 and 25 kHz) has been primarily concerned with the initial stages of the fatigue process prior to fatigue crack initiation. Results have been obtained using equipment in which it is possible to superimpose ultrasonic push pull stresses upon a static tensile stress. Microstructural examination of the specimen surface and of the internal deformation rearrangements by means of electron microscopy, has revealed fatigue damage which is comparable to that occurring during conventional, low frequency, fatigue. Thus, in contrast to other investigators, we have obtained evidence of dislocation dipole and deformation band formation together with regularly spaced slip band markings from tests at low amplitudes. Higher amplitude cycling has indicated the formation of dislocation tangles and cells. The results do not suggest a significant change in fatigue mechanism upon changing the testing frequency into the ultrasonic regime. Copyright © 1979, Wiley Blackwell. All rights reserved

引用

页码：97 / 106

页数：10

共 9 条

[1]

Eaves A.E., Smith A.W., Waterhouse W.J., Sansome D.H., Review of the application of ultrasonic vibrations to deforming metals, Ultrasonics, 13, pp. 162-170, (1975)

[2]

Mason W.P., Piezoelectric Crystals and their Application in Ultrasonics, (1950)

[3]

MacDonald D.E., Ultrasonic frequency metal fatigue: a review of the investigations of the institute for the study of fatigue (fracture) and (structural) reliability, Engng Fract. Mech, 8, pp. 17-29, (1976)

[4]

Wood W.A., Four basic types of metal fatigue, Treatise on Materials Science and Technology, 5, (1972)

[5]

Gilmore C.M., MacDonald D.E., Wood W.A., Observations on inhibiting ultrasonic fatigue in 70/30 brass, Acta metall, 20, pp. 953-957, (1972)

[6]

Hansson I., Horsewell A., Interaction of high frequency stresses and grain boundaries in stainless steel, Scand. J. Metall, 7, pp. 106-108, (1978)

[7]

Hansson I., Tholen A., Plasticity due to superimposed macrosonic and static strains, Ultrasonics, 16, pp. 57-64, (1978)

[8]

Mason W.P., Internal friction and fatigue in metals at large strain amplitudes, The Journal of the Acoustical Society of America, 28, pp. 1207-1218, (1956)

[9]

Awatani J., Katagiri K., Omura A., Shiraishi T., A study of the fatigue limit of copper, Metal. Trans, 6 A, pp. 1029-1034, (1975)

← 1 →