0Cr17Ni4Cu4Nb不锈钢析出沉淀相的非线性超声检测

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (9) : 232-236.

论文

颜丙生1，聂士杰1，汤宝平2，刘自然1

作者信息 +

Nonlinear ultrasonic detection of precipitated phase separated out inside 0Cr17Ni4Cu4Nb stainless steel

YAN Bingsheng1, NIE Shijie1, TANG Baoping2, LIU Ziran1

Author information +

文章历史 +

摘要

0Cr17Ni4Cu4Nb不锈钢在不同时效温度处理下，其力学性能具有较大差异。针对此类问题，提出采用非线性超声检测技术对不同时效温度处理下的该不锈钢试件进行检测，通过测量不同时效温度试件的超声非线性系数β，得到了β随着时效温度升高，整体呈上升趋势。进一步，微观观察结果显示，时效处理后该钢内部微结构变化主要为沉淀相的析出与长大，且随着时效温度升高，沉淀相的析出量是不断增大的。分析认为：该钢在时效处理后沉淀相的析出量是超声非线性系数变化的主要原因，利用非线性超声检测技术可对该钢内部析出的沉淀相变化进行检测。

Abstract

The mechanical properties of 0Cr17Ni4Cu4Nb stainless steel are quite different under the treatment of different aging temperatures.Here, aiming at this problem, a non-linear ultrasonic detection technique was proposed to detect specimens of this stainless steel under treatment of different aging temperatures.By measuring the ultrasonic non-linear coefficient β of the specimens with different aging temperatures, it was shown that β increases with increase in aging temperature.Further, the microscopic observation showed that this steel’s microstructure changes after aging treatment are mainly separating out and growth of precipitated phase; the precipitation amount of precipitated phase also increases with increase in aging temperature.The analysis told that the precipitation amount of precipitated phase of this steel after aging treatment is the main reason for the variation of ultrasonic nonlinear coefficient; the nonlinear ultrasonic detection technique can be used to detect the variation of precipitated phase separated out inside this stainless steel.

导出引用

颜丙生1，聂士杰1，汤宝平2，刘自然1. 0Cr17Ni4Cu4Nb不锈钢析出沉淀相的非线性超声检测[J]. 振动与冲击, 2021, 40(9): 232-236

YAN Bingsheng1, NIE Shijie1, TANG Baoping2, LIU Ziran1. Nonlinear ultrasonic detection of precipitated phase separated out inside 0Cr17Ni4Cu4Nb stainless steel[J]. Journal of Vibration and Shock, 2021, 40(9): 232-236

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