| 马世伟,袁康.SUS306不锈钢热疲劳损伤的超声无损评价[J].声学技术,2008,(2):206~209 |
| SUS306不锈钢热疲劳损伤的超声无损评价 |
| Ultrasonic nondestructive evaluation to the thermal fatigue damage of SUS306 stainless steel |
| 投稿时间：2007-06-26 修订日期：2007-09-11 |
| DOI： |
| 中文关键词: 超声无损评价 衰减系数 晶粒尺寸 断裂伸长率 |
| 英文关键词: ultrasonic nondestructive evaluation attenuation coefficient grain diameter elongation at breaking |
| 基金项目:国家自然科学基金(60472102);上海市教育基金(07zz03)资助项目 |
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| 中文摘要: |
| 对经过高温热处理和断裂拉伸实验的SUS306不锈钢模拟试样进行了接触法高频超声测试,对获得的超声反射波信号进行分析,得到了相应的超声波衰减系数与试样平均晶粒尺寸、断裂伸长率之间的关系,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评价具有实际意义。 |
| 英文摘要: |
| The high frequency ultrasonic test of using direct contact method to SUS306 stainless steel samples,which were treated by high temperature heat treatment and stretch experiment,is described in this paper.The ultrasonic attenuation coefficient,average grain diameter and elongation at breaking of the sample being tested are obtained through echo analysis.The relationships between average grain diameter,elongation at breaking and ultrasonic attenuation coefficient of samples are also established.These results are expected to be useful for early assessment of material thermal fatigue damage advance. |
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