李永德,徐娜,时军波,马虹

• 1:河北工程大学装备制造学院
• 2:山东省分析测试中心山东省材料失效分析与安全评估工程技术研究中心

摘要(Abstract)：

采用了两种不同的充氢方法(浸泡充氢和高压气相热充氢)研究了氢对断口上颗粒状亮区(Granular Bright Facet/GBF)尺寸的影响。研究表明,浸泡充氢并没有改变"GBF"的颗粒状特征,高压气相热充氢使得"GBF"的颗粒状特征变浅甚至消失。不论哪种充氢方法,充氢均使得"GBF"在较低的外加载荷下出现,且与充氢前相比"GBF"尺寸明显增加。电化学充氢没有改变疲劳寿命与(SGBF)1/2/(Sinc)1/2之间的关系,但是高压气相热充氢后疲劳寿命与(SGBF)1/2/(Sinc)1/2之间的关系有显著变化。

关键词(KeyWords)： 超高周疲劳;夹杂物;GBF;氢

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51101094);; 河北省科技计划项目(13211035)

作者(Author): 李永德,徐娜,时军波,马虹

DOI: 10.13289/j.issn.1009-6264.2015.05.015

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