• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Symposium series on fracture mechanics >Fatigue behavior of 42CrMo steel and 40Cr in the very high cycle regime
【24h】

Fatigue behavior of 42CrMo steel and 40Cr in the very high cycle regime

机译：42crmo钢的疲劳行为和40cr在非常高的循环状态下

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The S-N curves of 42CrMo steel and 40Cr steel between 104 and 1010 cycles were obtained by ultrasonic fatigue testing at a frequency of 20kHz.The results show that the S-N curve of 42CrMo steel displays the characteristic of "the multi -stage type" and the S-N curve of 40Cr steel displays the characteristic of "continually decreasing type" up to 1010 cycles.Both steels exhibit no "fatigue limit" of conventional fatigue curve.The S-N curve under ultrasonic fatigue loading can be described with the equation of Basquin.The fatigue strength in 109 cycles has dropped by nearly 40% than that in 107 cycles.Compared to the S-N curve of 42CrMo and 40Cr steel,the results illustrate that the fatigue life of 42CrMo steel is much higher than that of 40Cr steel in ultra-high regime,the S-N curves of both steels are basically a coincidence in high-cycle stage,the S-N curve of 42CrMo steel is significantly delayed in ultra-high-cycle stage,Mo alloy element has no effect on the high-cycle fatigue property of steel,but Mo alloy element has an impact on the ultra-high cycle fatigue property of steel.As this result,the ultra-high cycle fatigue property of steels can be improved by adding Mo alloy element in the steel.The effect of Mo on the ultra-high cycle fatigue property of steels can be explained with the micro mechanism called "enrichment of interstitial atom".
机译：的42CrMo钢和104个1010循环之间40Cr钢的SN曲线通过超声疲劳试验在20kHz.The结果的频率，从而得到显示的42CrMo钢显示器的SN曲线“的多-stage类型”和SN的特征40Cr钢的曲线显示“不断降低类型”最多可达1010次循环的特性。钢材表现出传统疲劳曲线的“疲劳极限”。超声疲劳负载下的Sn曲线可以用壳体的等式描述。疲劳强度在109个循环已经通过比107 cycles.Compared到的42CrMo和40Cr钢的SN曲线近40％下降，结果表明的42CrMo钢的疲劳寿命比在超高政权40Cr钢的高得多，两个钢的Sn曲线基本上是高循环阶段的巧合，42crmo钢的Sn曲线在超高循环阶段显着延迟，Mo合金元件对高循环疲劳预防没有影响钢的RTY，莫合金元件对钢的超高周疲劳性能产生影响。通过在钢中添加Mo合金元件，可以提高钢的超高循环疲劳性能。钢上的MO钢的超高周疲劳性能可以用称为“口腔间隙原子的富集”的微机制来解释。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号