The Proceedings of the Materials and Mechanics Conference
Online ISSN : 2424-2845
2011
Session ID : OS0601
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OS0601 Ultra-High-Cycle Fatigue Properties of 800MPa Grade High Strength Steels
Kazuya HOSONOKunio SAKAMOTOHirokazu TSUJITetsuya SASAKIKenta YAMAGIWAAtsushi YAMAGUCHI
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract
The giga cycle fatigue properties of high-strength steel are important to maintain and manage the equipment. In the present study, the rotating bending test and the ultrasonic loading test up to 10^8 cycles are carried out using the WEL-TEN780P in order to clarify the giga cycle fatigue properties of high-strength steel. One of the several specimens failed due to internal fracture over 10^7 cycles in the ultrasonic loading test. It was clarified the origin of fracture on specimen which failed over 10^7 cycles is inclusions, which is alumina, by fractography.
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© 2011 The Japan Society of Mechanical Engineers
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