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:
Rotating bending fatigue tests were carried out to investigate the influence of grain sizeon the resistance to crack growth of Ni-base super alloy, Inconel 718, using the materials with grainsizes of about 20, 50,100 and 200 たm, at room temperature. The larger grain size, the smaller crackgrowth rate, though the static strength was decreased with increase in grain size. The growth rate ofa small crack was uniquely determined by the term jana (Small crack growth law), where ja and aare the stress amplitude and the crack length, respectively, and n is a constant. The resistance tocrack growth among materials was evaluated based on the law and showed a good correlation withtensile strength jB, meaning that fatigue life can be predicted by using only j B BB
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.541.pdf
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