Ultrasonic Fatigue of Ti40Zr10Cu34Pd14Sn2 Glassy Alloy
| Autor: | Guoqiang Xie, Shengli Zhu, Katsuhiro Abe, Shin-ichi Yamaura |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Open Journal of Metal. :56-64 |
| ISSN: | 2164-277X 2164-2761 |
| Popis: | In this work, ultrasonic fatigue behavior of the Ti40Zr10Cu34Pd14Sn2 glassy alloy was investigated at 20 kHz at a stress ratio of R = -1. The number of cycles to failure in the S-N curve obtained in this work did not decrease again even after 107 - 108 cycles unlike previous findings for some steels. The fatigue endurance limit and the fatigue rate were σW = 762 MPa and σW/σB = 0.37, respectively. Fish-eye type inertial crack initiation, reported in many papers on giga-cycle fatigue testing, was not observed. A tendency for the fatigue strength of the Ti40Zr10Cu34Pd14Sn2 glassy alloy specimens to be divided into two groups was observed, that is, specimens with a short fatigue lifetime ( 106 cycles). This may have been caused by accidental nucleation of micro-defects such as impurities, voids and precipitates in the glassy rod specimens during the casting. |
| Databáze: | OpenAIRE |
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