Specimen size effects on gigacycle fatigue properties of high-strength steel under ultrasonic fatigue testing

被引：106
|
作者：
Furuya, Y. [1 ]
机构：
[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
来源：
SCRIPTA MATERIALIA | 2008年 / 58卷 / 11期
关键词：
fatigue; gigacycle fatigue; ultrasonic fatigue testing; high-strength steel; size effect;
D O I：
10.1016/j.scriptamat.2008.01.039
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Ultrasonic fatigue testing was conducted for high-strength steel, employing enlarged specimens with a straight section. The results showed good agreement with conventional servohydraulic fatigue test results, demonstrating the validity of ultrasonic fatigue testing using these enlarged specimens under conditions where fish-eye fractures occur. When the results were compared with those using conventional specimens, specimen size effects were clearly observed: enlarged specimens showed lower fatigue strength due to appearance of larger inclusions in the fish-eye fracture origin. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1014 / 1017
页数：4
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