ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
A series of strain fatigue tests were carried out on small bugle-like slice-specimens ofZr-4 alloy at 20[removed info] and 400[removed info]. According to Elastic and Plastic Finite Element Analysis [removed info]and assumption of local damage equivalence, a strain formula was given to transform transversestrain of the specimen to uniaxial strain. Based on the test results of the alloy and the strain transformformula, M-C (Manson-Coffin) models to be used for estimating uniaxial fatigue life of Zr-4alloy were obtained. The results show that, the alloy mainly behaves as cyclic softening at 20[removed info] andas cyclic hardening at 400[removed info], and the elevated temperature can lead serious additional fatigue damageof the alloy and the effect of the elevated temperature impairs gradually with increasing of amplitudestrain. A conclusion is helpful that prediction life by using M-C model based on traditionalstrain transform equation is quite conservative when uniaxial strain amplitude is less than 0.5%
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.324-325.1241.pdf
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