有哪些信誉好的足球投注网站Effect of carburizing treatment on the “fish eye” crack growth for a low alloyed chromium.pdf
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Effect of carburizing treatment on the “fish eye” crack growth for a low alloyed chromium
Materials Science Engineering A 559 (2013) 790–797Contents lists available at SciVerse ScienceDirectMaterials Science Engineering A0921-50
http://d
n Corr
E-mjournal homepage: /locate/mseaEffect of carburizing treatment on the ‘‘fish eye’’ crack growth for a low
alloyed chromium steel in very high cycle fatigueZhi Yong Huang a,b,n, Daniele Wagner b, Qing Yuan Wang a, Claude Bathias b
a Sichuan University, No. 29 Jiuyanqiao Wangjiang Road, Chengdu, 610064, China
b Universite? Paris Ouest Nanterre La De?fense, 50 Rue de Sevres 92410 Ville d’Avray, Francea r t i c l e i n f o
Article history:
Received 28 April 2012
Received in revised form
4 September 2012
Accepted 7 September 2012
Available online 26 September 2012
Keywords:
VHCF
SEM
Crack path
Fatigue dissipation93/$ - see front matter 2012 Elsevier B.V. A
/10.1016/j.msea.2012.09.025
esponding author. Tel./fax.:0086 28 8540691
ail address: huangzy@ (Z. Yong Hua b s t r a c t
A low alloyed chromium steel with a carburizing treatment is studied in VHCF regime with the help of
an ultrasonic fatigue machine working at 20 kHz frequency. An infrared camera is applied to study the
thermal dissipation during the crack growth period. The number of cycles at the second crack growth
stage could be determined by the temperature evolution. The crack propagation model is coupled with
thermal dissipation, which permits to estimate the temperature evolution in crack propagation period
on specimen surface with the help of the numerical method FEM. The comparison between the results
of test and simulation shows that the model is in agreement with the test in the second period of crack
propagation.
2012 Elsevier B.V. All rights reserved.1. Introduction
In practice, service life of mechanical components often
exceeds 107 cycles which is in the so called Very High Cycle
Fatigue (VHCF) regime. The ultrasonic fatigue test machine has
been applied to investigate the fatigue behavior with a high
frequency of 20 kHz [1]. The frequency e
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