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首页> 外文期刊>Corrosion science >Role of water chemistry and microstructure in stress corrosion cracking in the fusion boundary region of an Alloy 182-A533B low alloy steel dissimilar weld joint in high temperature water
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Role of water chemistry and microstructure in stress corrosion cracking in the fusion boundary region of an Alloy 182-A533B low alloy steel dissimilar weld joint in high temperature water

机译：182-A533B低合金钢异种接头在高温水中的熔合边界区域中水化学和微观结构在应力腐蚀开裂中的作用

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摘要

Stress corrosion cracking (SCC) in the fusion boundary (FB) region of an Alloy 182-low alloy steel (LAS) dissimilar weld joint in 288 ℃ water was investigated by experiments and finite element simulation. Creviced bent beam and crack growth rate (CGR) experiments showed that, while the FB was a barrier to SCC growth, further crack growth into LAS was activated by a combined effect of sulfate and dissolved oxygen in water. Finite element simulation suggested that a positive gradient of hardness as the crack approached to the FB in dilution zone caused decreased CGR. Role of microstructure and water chemistry in SCC was discussed.
机译：通过实验和有限元模拟研究了182合金-低合金钢（LAS）异种焊接接头在288℃水中的熔合边界（FB）区域的应力腐蚀开裂（SCC）。弯曲弯曲梁和裂纹扩展率（CGR）实验表明，尽管FB是SCC增长的障碍，但硫酸盐和水中溶解氧的共同作用将进一步裂纹扩展为LAS。有限元模拟表明，当裂纹在稀释区中接近FB时，硬度的正梯度会导致CGR降低。讨论了微结构和水化学在SCC中的作用。

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  • 来源
    《Corrosion science》 |2011年第12期|p.4309-4317|共9页
  • 作者

    Qunjia Peng; He Xue; Juan Hou; Kazuhiko Sakaguchi; Yoichi Takeda; Jiro Kuniya; Tetsuo Shoji;

  • 作者单位

    State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, 62 Wencui Road, Shenyang 110016, China,Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University, 6-6-01, Aramaki Aoba, Aoba-ku, Sendai 980-8579, Japan;

    School of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China;

    Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University, 6-6-01, Aramaki Aoba, Aoba-ku, Sendai 980-8579, Japan;

    Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University, 6-6-01, Aramaki Aoba, Aoba-ku, Sendai 980-8579, Japan;

    Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University, 6-6-01, Aramaki Aoba, Aoba-ku, Sendai 980-8579, Japan;

    Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University, 6-6-01, Aramaki Aoba, Aoba-ku, Sendai 980-8579, Japan;

    Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University, 6-6-01, Aramaki Aoba, Aoba-ku, Sendai 980-8579, Japan;

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  • 正文语种 eng
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  • 关键词

    a. low alloy steel; a. alloy; b. sem; b.tem; c. stress corrosion; c. welding;

    机译：一个。低合金钢一个。合金;b。 sem;b.tem;C。应力腐蚀;C。焊接;

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