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首页> 外文期刊>Corrosion science >Effects of solution heat-treatment and nitrogen in shielding gas on the resistance to pitting corrosion of hyper duplex stainless steel welds
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Effects of solution heat-treatment and nitrogen in shielding gas on the resistance to pitting corrosion of hyper duplex stainless steel welds

机译：固溶处理和保护气体中的氮气对超双相不锈钢焊缝抗点蚀性能的影响

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摘要

The effects of solution heat-treatment and shielding gas on the pitting corrosion of hyper duplex stainless steel (HDSS) welds were investigated in highly concentrated chloride environments. The pitting resistance of a solution heat-treated HDSS after welding with an Ar shielding gas supplemented with N2 was greatly increased due to the dissolution of Cr2N in a-phase, which followed the diffusion of N atoms from the a-phase to the y-phase and an increase of the γ-phase in the weld metal and heat affected zone. It was also attributed to a decrease of the pitting resistance equivalent number difference between the two phases.
机译：在高浓度氯化物环境下，研究了固溶处理和保护气体对超双相不锈钢（HDSS）焊缝点蚀的影响。由于Cr2N溶解在a相中，随后N原子从a相扩散到y-，因此，固溶热处理的HDSS与添加N2的Ar保护气焊接后的耐点蚀性大大提高。焊缝金属和热影响区中的γ相和γ相的增加。这也归因于两相之间的抗点蚀当量数差的减小。

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  • 来源
    《Corrosion science》 |2011年第5期|p.1939-1947|共9页
  • 作者

    Soon-Tae Kim; Seok-Hwan Jang; In-Sung Lee; Yong-Soo Park;

  • 作者单位

    Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Republic of Korea;

    Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Republic of Korea;

    Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Republic of Korea;

    Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Republic of Korea;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    A. Stainless steel; B. Polarization; B.SEM; C Pitting corrosion; C. Welding;

    机译：A.不锈钢;B。极化;B.SEM;C点蚀;C。焊接;

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