Cyclic mechanical behavior of 316L: Uniaxial LCF and strain-controlled ratcheting tests

被引：25

作者：

Facheris, G. ^{[1
]}

Janssens, K. G. F. ^{[1
]}

机构：

[1] Paul Scherrer Inst, Nucl Energy & Safety Res Dept, Lab Nucl Mat, CH-5232 Villigen, Switzerland

来源：

NUCLEAR ENGINEERING AND DESIGN | 2013年 / 257卷

关键词：

AUSTENITIC STAINLESS-STEEL; ROOM-TEMPERATURE; AISI; 316L; PART I; DEFORMATION; FATIGUE; METALS;

D O I：

10.1016/j.nucengdes.2013.01.010

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

With the purpose of analyzing the fatigue behavior under loading conditions relevant for the primary cooling circuit of a light water nuclear reactor, a set of uniaxial low cycle fatigue and strain-controlled ratcheting tests (also named 'cyclic tension tests') has been performed at room temperature and at 200 degrees C on specimens manufactured from two different batches of stainless steel grade 316L. The experiments have been repeated varying strain amplitude, cyclic ratcheting rate and ratcheting direction in order to investigate the influence on the cyclic deformation behavior. In strain-controlled ratcheting tests, the stress response is found to be a superposition of two hardening mechanisms: the first one due to the zero mean strain cycling and the second one linked with the monotonic drifting of mean plastic strain. An approach is proposed to distinguish the effect of each mechanism and the influence of the test parameters on the hardening mechanisms is discussed. (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：100 / 108

页数：9

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