AFM and TEM study of cyclic slip localization in fatigued ferritic X10CrAl24 stainless steel

被引：85

作者：

Man, J ^{[1
]}

Petrenec, M ^{[1
]}

Obrtlík, K ^{[1
]}

Polák, J ^{[1
]}

机构：

[1] Acad Sci Czech Republ, Inst Phys Mat, Brno 61662, Czech Republic

来源：

ACTA MATERIALIA | 2004年 / 52卷 / 19期

关键词：

atomic force microscopy; transmission electron microscopy; ferritic steel; fatigue; persistent slip band;

D O I：

10.1016/j.actamat.2004.08.014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Atomic force microscopy and high resolution scanning electron microscopy were applied to the study of surface relief evolution at emerging persistent slip bands (PSBs) in individual grains of ferritic X10CrAl24 stainless steel cycled with constant plastic strain amplitude. Only the combination of both methods can reveal the true shape and fine details of extrusions and intrusions. Quantitative data on the changes of the surface topography of persistent slip markings and on the kinetics of extrusion growth during the fatigue life were obtained. Transmission electron microscopy of surface foils revealed PSBs with the typical, well-known ladder structure. Experimental data on cyclic slip localization in PSBs are compared with those in fee metals and discussed in terms of vacancy models of surface relief evolution and fatigue crack initiation. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：5551 / 5561

页数：11

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