45号钢受热损伤的超声非线性检测实验研究

振动与冲击 ›› 2020, Vol. 39 ›› Issue (21) : 279-283.

论文

毛汉颖1，秦国力1，黎庆柱2，易晓旭2，毛汉领2

作者信息 +

Ultrasonic non-linear detection tests for 45 steel thermal damage

MAO Hanying1, QIN Guoli1, LI Qingzhu2, YI Xiaoxu2, MAO Hanling2

Author information +

文章历史 +

摘要

5号钢是常见的零件制造用材，研究其热损伤的检测对零件失效评估具有重要意义。为研究45号钢受不同程度热损伤的超声非线性效应，模拟制备了不同热损伤程度的试件，采用RITEC公司的RAM-5000系统对试件进行超声非线性检测实验，获得超声非线性系数与受热温度的关系曲线，结合材料金相显微组织的演变规律进行深入分析。结果表明:45号钢的超声非线性系数随其受热温度的升高呈现先增后减再增的趋势，受热温度达到600 ℃时非线性系数开始增大；到800 ℃时非线性系数达到峰值，而后非线性系数大幅减小，这与45号钢在700~800 ℃形成共格应变状态相吻合；在1 300 ℃非线性系数有小幅增大。45号钢非线性系数的变化与金相微观组织变化之间的关联性，为利用超声非线性技术检测45号钢受热损伤及其金相组织变化评估提供了实验依据。

Abstract

45 steel is a common material for parts manufacturing, and it is important to study its thermal damage detection for parts failure assessment.Here, in order to study ultrasonic nonlinear effects of 45 steel with different degrees of thermal damage, specimens with different degrees of thermal damage were made.Ultrasonic nonlinear detection tests were conducted for specimens using the RAM-5000 system made by RITEC company to obtain relation curves between ultrasonic nonlinear coefficients and heating temperature.These curves were deeply analyzed combining with the material’s metallographic microstructure evolution laws.Results showed that the ultrasonic nonlinear coefficient of 45 steel firstly increases, then decreases and increases again with increase in heating temperature;when heating temperature reaches 600 ℃, the ultrasonic nonlinear coefficient begins to increase; when temperature reaches 800 ℃, itreaches the peak value;thenit drops sharply, this is consistent with the coherent strain state of 45 steel between 700-800 ℃; finally, it at 1 300 ℃ rebounds slightly;the correlation between variation of ultrasonic nonlinear coefficient of 45 steel and its metallographic microstructure varying provides atest basis for the ultrasonic nonlinear detection of 45 steel thermal damage and the evaluation of its metallographic microstructure change.

导出引用

毛汉颖1，秦国力1，黎庆柱2，易晓旭2，毛汉领2. 45号钢受热损伤的超声非线性检测实验研究[J]. 振动与冲击, 2020, 39(21): 279-283

MAO Hanying1, QIN Guoli1, LI Qingzhu2, YI Xiaoxu2, MAO Hanling2. Ultrasonic non-linear detection tests for 45 steel thermal damage[J]. Journal of Vibration and Shock, 2020, 39(21): 279-283

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