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核电用GH4169合金棒材315℃低周疲劳性能研究
Low-cycle Fatigue Properties of GH4169 Bars at 315 ℃ for Nuclear Power Applications
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- DOI:
- 作者:
- 李红宇 刘杨 邢建 韩吉庆
LI Hongyu;LIU Yang;XING Jian;HAN Jiqing
- 作者单位:
- 西安诺博尔稀贵金属材料股份有限公司
XI'AN Nobel Rare Metal Materials Co.,Ltd.,Xi'an 710065,China
- 关键词:
- 核电 GH4169 低周疲劳性能
nuclear power GH4169 low-cycle fatigue properties
- 摘要:
- 采用轴向总应变控制方法研究核电用GH4169棒材在其工作温度315℃下的低周疲劳性能。结果表明,GH4169棒材的低周循环应力-应变行为符合非线性关系式。棒材的循环应变强化指数和循环强度系数分别为0.050 2和1 438.47。棒材315℃下低周疲劳应变-分析寿命符合关系式。
The axial total strain control method was used to study the low cycle fatigue performance of GH4169 rod at 315 ℃.The results show that the low-cycle cyclic stress-strain behavior of bar GH4169 conforms to the nonlinear relation. The cyclic strain strengthening index and cyclic strength coefficient are 0.050 2 and 1 438.47, respectively. The low-cycle fatigue strain-analysis life of the bar at 315 ℃ conforms to the relation.