17-4PH不锈钢热老化脆化的非线性超声检测评估
Evaluation of nonlinear ultrasonic testing for thermal aging embrittlement of 17-4PH stainless steel
摘 要
研究了400℃下，不同时效核电厂主蒸汽隔离阀备件阀杆的非线性超声和力学性能的变化规律。试验结果表明，在时效过程中，17-4PH不锈钢的冲击功降低，而布氏硬度、抗拉强度和屈服强度提高；硬度、拉伸性能与非线性超声表现出明显的关联性；非线性超声对时效过程中17-4PH不锈钢的显微组织变化敏感，可用来对17-4PH不锈钢进行无损评估表征。
非线性超声
谐波
热老化
17-4PH
nonlinear ultrasonic
harmonic wave
thermal aging
Abstract
The change of nonlinear ultrasonic and mechanical properties of the main steam isolation valve stem in a nuclear power plant at 400℃ for different aging time was studied. The results show that with the thermal aging time increasing, the impact energy of 17-4PH stainless steel decreases, while the Brinell hardness, tensile strength and yield strength increase. Hardness, tensile properties and nonlinear ultrasonic show a clear correlation. Ultrasonic nonlinear parameter is sensitive to the microstructure changes of 17-4PH stainless steel during the aging process, which can be used for nondestructive evaluation and characterization of 17-4PH stainless steel.
中图分类号 TG142 TG115.28 DOI 10.11973/wsjc202201005
所属栏目 试验研究
基金项目 国家重点研发计划项目（2020YFB1901500）
收稿日期 2021/6/22
修改稿日期
网络出版日期
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备注杨广宇(1991-),男,硕士,工程师,主要从事核电厂内材料或构件的性能和寿命检测评估工作
引用该论文: YANG Guangyu,SHI Fangjie,LI Qianwu,HUANG Fei,LIU Yafei. Evaluation of nonlinear ultrasonic testing for thermal aging embrittlement of 17-4PH stainless steel[J]. Nondestructive Testing, 2022, 44(1): 20～23
杨广宇,史芳杰,李乾武,黄飞,刘亚飞. 17-4PH不锈钢热老化脆化的非线性超声检测评估[J]. 无损检测, 2022, 44(1): 20～23
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参考文献
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【5】周正干, 刘斯明.非线性无损检测技术的研究、应用和发展[J].机械工程学报, 2011, 47(8):2-11.
【6】GRANATO A, LVCKE K.Theory of mechanical damping due to dislocations[J].Journal of Applied Physics, 1956, 27(6):583-593.
【7】彭艳华, 王均, 邹红, 等.17-4PH不锈钢长期时效对拉伸性能的影响[J].核动力工程, 2007, 28(3):82-86.
【2】WANG J, ZOU H, WU X Y, et al.The effect of long-term isothermal aging on dynamic fracture toughness of type 17-4 PH SS at 350℃[J].Materials Transactions, 2005, 46(4):846-851.
【3】张剑锋, 轩福贞, 项延训.材料损伤的非线性超声评价研究进展[J].科学通报, 2016, 61(14):1536-1550.
【4】MATLACK K H, BRADLEY H A, THIELE S, et al.Nonlinear ultrasonic characterization of precipitation in 17-4PH stainless steel[J].NDT & E International, 2015, 71:8-15.
【5】周正干, 刘斯明.非线性无损检测技术的研究、应用和发展[J].机械工程学报, 2011, 47(8):2-11.
【6】GRANATO A, LVCKE K.Theory of mechanical damping due to dislocations[J].Journal of Applied Physics, 1956, 27(6):583-593.
【7】彭艳华, 王均, 邹红, 等.17-4PH不锈钢长期时效对拉伸性能的影响[J].核动力工程, 2007, 28(3):82-86.
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