Procedia Engineering 55 (2013) 165 – 170
1877-7058 © 2013 The Authors. Published by Elsevier Ltd.
Selection and peer-review under responsibility of the Indira Gandhi Centre for Atomic Research.
doi:10.1016/j.proeng.2013.03.237
6
th
International Conference on Cree
Analysis of Hysteresis Loo
Low Cycle Fati
Samir Chandra Roy
a
, Su
a
Metallurgical and Material Engin
b
Indira Gandhi Centre for
Abstract
Low cycle fatigue tests were carried out on 316 L
ranging from ± 0.3 to ±1.0 % and a strain rate of 3×1
by prolonged softening, saturation and final failure. T
The analysis of stable hysteresis loops showed non-M
material under cyclic loading was characterized tak
cycling. The material parameters were obtained from
material. Finite element analysis of elasto-plastic de
cyclic stress response of the material. The predicted h
low cycle fatigue life prediction was carried out based
© 2013 The Authors. Published by Elsevier Ltd
Gandhi Centre for Atomic Research.
Keywords: Low cycle fatigue; non-Masing behavior; isotrop
1. Introduction
In liquid metal cooled fast breeder reactors
cyclic thermal stresses as a result of temperatu
during transients. Therefore, low cycle fatigu
significant consideration in the design and life a
Masing or non-Masing behavior under fatigue
conditions. For materials showing Masing beha
coincide with the cyclic stress-strain curve ma
behavior, coincidence occurs only when the sa
slope to match the loading branches [3-7].
∗
Corresponding Author:
E-mail address: goyal@igcar.gov.in
ep, Fatigue and Creep-Fatigue Interaction [CF-6
ops of 316L(N) Stainless Steel und
igue Loading Conditions
unil Goyal
b∗
, R. Sandhya
b
, S. K. Ray
a
neering, Jadavpur University, Kolkata- 700 032, India
Atomic Research, Kalpakkam- 603 102, India
L(N) stainless steel at room temperature employing strain amp
10
-3
s
-1
. The material showed initial hardening for a few cycles fo
The fatigue life was found to decrease with increase in strain am
Masing behaviour for this material. The elasto-plastic response
king into account isotropic and kinematic hardening occurring
m the experimental hysteresis loops and cyclic stress response
formation was carried out to obtain the stabilized hysteresis lo
hysteresis loops showed good agreement with experimental resu
d on plastic strain energy dissipation with cycling.
. Selection and/or peer-review under responsibility of the
pic hardening; kinematic hardening; plastic strain energy dissipation.
s (LMFBRs), the components are often subjected to re
ure gradients which occur during start-ups and shut-dow
ue (LCF) represents a predominant failure mode, req
nalysis of LMFBR components [1, 2]. The material may e
e loading depending on the microstructure and experi
avior, the matching of compressive tips of the hysteresis
agnified by two. Whereas, for materials that show non-M
aturated hysteresis loops are translated along the linear
6]
der
plitudes
ollowed
mplitude.
e of the
during
e of the
oop and
lts. The
Indira
epeated
wns or
quiring
exhibit
mental
s loops
Masing
elastic
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© 2013 The Authors. Published by Elsevier Ltd.
Selection and peer-review under responsibility of the Indira Gandhi Centre for Atomic Research.