17-4PH不锈钢热老化的磁多参数无损评估
Nondestructive evaluation of thermal aging of 17-4PH stainless steel bymulti-magnetic parameters
摘 要
在350 ℃下对17-4PH不锈钢进行加速热老化后开展力学试验、磁滞回线测试试验与磁多参数测试试验，结果表明，17-4PH不锈钢热老化后冲击功下降，硬度上升。磁滞回线表明热老化对17-4PH不锈钢的宏观磁性无明显影响，且磁参数呈无规律性波动。应用人工神经网络选取合适的节点数与算法，可建立17-4PH不锈钢热老化的多参数高精度评估模型，为17-4PH不锈钢的热老化评估提供新的方法。
热老化
多参数
17-4PH stainless steel
thermal aging
multi-parameter
Abstract
The mechanical experiment, hysteresis loop test and multi-magnetic parameters test were carried out after accelerated thermal aging of 17-4PH under 350℃. Results show that the impact energy of 17-4PH decrease while the hardness increase after thermal aging. The hysteresis loop shows that thermal aging has no impact on macroscopic magnetism of 17-4PH and the magnetic parameters show no regular change. Through the application of artificial neural network, the proper node and algorithmic was chosen to build the precise module to evaluate the thermal aging of 17-4PH, which provide a new way to evaluate the thermal aging of 17-4PH.
中图分类号 TG115.28 DOI 10.11973/wsjc202105007
所属栏目 试验研究
基金项目
收稿日期 2020/12/3
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备注褚英杰(1983-),男,高级工程师,研究方向为核电设备的老化、腐蚀及失效分析
引用该论文: CHU Yingjie,SUN Qi,LI Qianwu,SHI Fangjie,HUANG Fei,YANG Guangyu. Nondestructive evaluation of thermal aging of 17-4PH stainless steel bymulti-magnetic parameters[J]. Nondestructive Testing, 2021, 43(5): 29～33
褚英杰,孙琦,李乾武,史芳杰,黄飞,杨广宇. 17-4PH不锈钢热老化的磁多参数无损评估[J]. 无损检测, 2021, 43(5): 29～33
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参考文献
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