锆脱氧对船板EH36夹杂物和耐蚀性能的影响

doi:10.13228/j.boyuan.issn1005-4006.20220019

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Abstract In order to study the effect of deoxidation mode on inclusion morphology and corrosion resistance for ship plate, the grain size, inclusion morphology and corrosion resistance of steel plate were compared under zirconium deoxidation and aluminum deoxidation. The results show that the inclusions in zirconium deoxidizing test steel are mainly calcium aluminate inclusions and spherical composite oxides.The density of zirconium deoxidation large particles and long strip MnS inclusions is less, and the dispersion of inclusions is fine, which can prevent the grain growth caused by grain boundary migration and effectively refine the grain size of steel plate. The fine oxide in the steel formed by zirconium deoxidation can be used as the heterogeneous nucleation core of MnS, which reduces the electrochemical corrosion sensitivity and expansion speed of MnS inclusion micro area in the steel matrix. Compared with aluminum deoxidation, the composite oxide has good electrochemical stability and significantly improves the corrosion resistance of the steel plate.

Key words： high strength ship plate zirconium deoxidation aluminum deoxidation composite oxide corrosion resistance

Received: 08 February 2022

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	JIN Xing

Cite this article:

JIN Xing. Effect of zirconium deoxidation on inclusions and corrosion resistance for high strength ship plate EH36[J]. CONTINUOUS CASTING, 2022, 41(2): 83-88.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20220019 OR http://www.chinamet.cn/Jweb_lz/EN/Y2022/V41/I2/83

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