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首页> 外文期刊>Engineering failure analysis >Pitting behavior of thermally aged Z3CN20.09M cast stainless steel for primary coolant pipe of nuclear power plant
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Pitting behavior of thermally aged Z3CN20.09M cast stainless steel for primary coolant pipe of nuclear power plant

机译：热老化Z3CN20.09M施工核电站原发性冷却管铸造不锈钢的蚀行为

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摘要

The effect of thermal aging at 400 degrees C for various times on the pitting corrosion behavior of Z3CN20.09M duplex stainless steel was investigated using comprehensive study of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). It is revealed that the pitting resistance of this steel has a negative relationship with increasing the aging time. It is indicating that the property of the specimens aged and then annealed at 550 degrees C for 1 h can be recovered to that of the un-aged. We found by making use of TEM that through the annealing processes the Cr-rich alpha ' phase is dissolved in the ferrite phase, while G phase still exists in the ferrite phase at the same time, suggesting that the alpha ' phase is the major reason for the deterioration in pitting corrosion resistance of the thermally aged Z3CN20.09M steel.
机译：研究了在400℃下热老化在Z3CN20.09M双相不锈钢的蚀腐蚀行为中的各个时间进行了综合性研究和电化学阻抗光谱（EIS）的研究。 据透露，该钢的蚀性抗性与增加老化时间具有负面关系。 结果表明，在550℃下退火的样品的性质可以回收1小时。 我们发现通过利用TEM，通过退火处理，将Cr富含α相溶解在铁氧体相中，同时G相仍然存在于铁氧体相中，表明α阶段是主要原因 用于热老化Z3CN20.09M钢的蚀腐蚀性劣化的劣化。

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  • 来源
    《Engineering failure analysis》 |2018年第2018期|共8页
  • 作者

    Chen Yuefeng; Chen Bo; Dong Fang; Yang Bin; Li Shilei; Yu Xiaoyi;

  • 作者单位

    Univ Sci &

    Technol Beijing Collaborat Innovat Ctr Steel Technol Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing State Key Lab Adv Met &

    Mat Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing State Key Lab Adv Met &

    Mat Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Collaborat Innovat Ctr Steel Technol Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing State Key Lab Adv Met &

    Mat Beijing 100083 Peoples R China;

    Yantai Taihai Marnoir Nucl Equipment Co Ltd Yantai 264003 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程力学;
  • 关键词

    Primary coolant pipe; Duplex stainless steel; Thermal aging; Pitting;

    机译：初级冷却剂管;双面不锈钢;热老化;点燃;

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