采用超声疲劳试验方法和常规疲劳试验方法，对FV520B-I钢在20 kHz和140 Hz频率下的超高周疲劳性能进行了研究，分析了加载频率对FV520B-I钢超高周疲劳性能的影响，并基于Basquin方程对超声疲劳试验数据进行了修正。结果表明：在应力幅值相同的情况下，试验钢的疲劳寿命随加载频率的提高而增加，而疲劳强度随加载频率的提高而降低；常规疲劳试验和超声疲劳试验下试验钢的疲劳断裂机制和断口形貌基本相同；修正后的超声疲劳试验数据与常规疲劳试验数据具有较好的相容性。
所属栏目
材料性能及应用国家重点基础研究发展计划项目（2011CB013400）；国家自然科学基金资助项目（51475077）
收稿日期
2016/2/282017/5/27
作者单位
石博文:大连理工大学机械工程学院, 大连 116024
姜英杰:大连理工大学机械工程学院, 大连 116024
孙清超:大连理工大学机械工程学院, 大连 116024
备注
石博文(1989-),男,山东德州人,硕士研究生
引用该论文:
SHI Bowen,JIANG Yingjie,SUN Qingchao.Effect of Loading Frequency on Fatigue Property of FV520B-I Steel in Super High Cycle Regime[J].Materials for mechancial engineering,2017,41(7):66～69
石博文,姜英杰,孙清超.加载频率对FV520B-I钢超高周疲劳性能的影响[J].机械工程材料,2017,41(7):66～69
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