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首页> 外文期刊>Corrosion science >Quantitatively related acoustic emission signal with stress corrosion crack growth rate of sensitized 304 stainless steel in high-temperature water
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Quantitatively related acoustic emission signal with stress corrosion crack growth rate of sensitized 304 stainless steel in high-temperature water

机译：高温水中敏化304不锈钢的应力腐蚀裂纹扩展速率与声发射信号定量相关

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摘要

Stress corrosion cracking (SCC) of sensitized 304 stainless steel in high-temperature water was in-situ monitored by coupling acoustic emission (AE) and direct current potential drop (DCPD) techniques. The AE signals were identified using novel recurrence quantification analysis (RQA) and k-mean cluster method. It was found that the RQA is feasible to identify the evolution of different AE waveforms generated by ligament tearing and plastic deformation of the crack tip. The AE cumulative hits rate was linear with the SCC crack growth rate, providing a possibility for applying the AE technique to quantitatively evaluate SCC in high-temperature water.
机译：通过耦合声发射（AE）和直流电势降（DCPD）技术，现场监测了敏化304不锈钢在高温水中的应力腐蚀开裂（SCC）。使用新型递归定量分析（RQA）和k-均值聚类方法识别AE信号。已经发现，RQA是可行的，可以确定由韧带撕裂和裂纹尖端的塑性变形产生的不同AE波形的演变。 AE的累积命中率与SCC裂纹的增长率成线性关系，这为应用AE技术定量评估高温水中的SCC提供了可能性。

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  • 来源
    《Corrosion science》 |2019年第8期|79-86|共8页
  • 作者

    Zhang Zhen; Zhang Ziyu; Tan Jibo; Wu Xinqiang;

  • 作者单位

    Chinese Acad Sci, Inst Met Res, Liaoning Key Lab Safety & Assessment Tech Nucl Ma, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China|Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China;

    Chinese Acad Sci, Inst Met Res, Liaoning Key Lab Safety & Assessment Tech Nucl Ma, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China;

    Chinese Acad Sci, Inst Met Res, Liaoning Key Lab Safety & Assessment Tech Nucl Ma, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China;

    Chinese Acad Sci, Inst Met Res, Liaoning Key Lab Safety & Assessment Tech Nucl Ma, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Stainless steel; SEM; Stress corrosion; High-temperature corrosion;

    机译：不锈钢;SEM;应力腐蚀;高温腐蚀;

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