SUS306不锈钢平均晶粒尺寸的超声无损检测及其评价

上海大学学报(自然科学版) ›› 2010, Vol. 16 ›› Issue (2): 125-129.

SUS306不锈钢平均晶粒尺寸的超声无损检测及其评价

马世伟,袁康

上海大学机电工程与自动化学院，上海市电站自动化技术重点实验室，上海 200072

收稿日期:2008-07-10 出版日期:2010-04-20 发布日期:2010-04-20
通讯作者: 马世伟(1965~),男,教授,博士,研究方向为检测技术与信号处理. E-mail:swma@mail.shu.edu.cn
基金资助:
国家自然科学基金资助项目（60472102）;上海市教委基金资助项目（07ZZ03）

Nondestructive Ultrasound Test and Evaluation of Average Grain Diameter in SUS306 Stainless Steel

MA Shi-Wei, YUAN Kang

School of Mechatronics Engineering and Automation, Shanghai Key Laboratory of Power Station Automation Technology, Shanghai University, Shanghai 200072, China)

Received:2008-07-10 Online:2010-04-20 Published:2010-04-20

摘要/Abstract

摘要：

对经过高温热处理的SUS306不锈钢模拟试样进行接触型脉冲反射法高频超声检测实验，对获得的回波信号进行分析，研究衰减系数、速度、底面反射波峰值频率、背散射波强度等超声特征参数的变化情况，建立这些参数与被测材料平均晶粒尺寸的关系，对利用超声脉冲反射技术进行材料热疲劳损伤进展的无损检测与评价具有实际意义.

关键词: 无损评价；SUS306不锈钢；晶粒尺寸；超声波

Abstract:

High frequency nondestructive ultrasound test using a direct contact pulse-echo method is used to test samples of SUS306 stainless steel that were processed by high temperature heat treatment. Reflected ultrasonic signals were analyzed. Characteristics such as attenuation coefficient, velocity, fundamental frequencies of bottom echoes, and intensity of backscattering waves are studied. Relationship between ultrasonic properties and the average grain diameter of the tested material is obtained. These results are useful in nondestructive detection and in the assessment of the degree of material’s thermal fatigue.

Key words: nondestructive evaluation; SUS306 stainless steel; grain diameter; ultrasound

中图分类号:

TG 115

马世伟,袁康. SUS306不锈钢平均晶粒尺寸的超声无损检测及其评价[J]. 上海大学学报(自然科学版), 2010, 16(2): 125-129.

MA Shi-Wei, YUAN Kang. Nondestructive Ultrasound Test and Evaluation of Average Grain Diameter in SUS306 Stainless Steel[J]. Journal of Shanghai University（Natural Science Edition）, 2010, 16(2): 125-129.