590 MPa级低合金高强度热镀锌钢板表面亮点缺陷分析

doi:10.13251/j.issn.0254-6051.2022.06.048

金属热处理 ›› 2022, Vol. 47 ›› Issue (6): 270-273.DOI: 10.13251/j.issn.0254-6051.2022.06.048

590 MPa级低合金高强度热镀锌钢板表面亮点缺陷分析

赵川翔

广州JFE钢板有限公司, 广东广州 511464

收稿日期:2022-01-10 修回日期:2022-05-06 出版日期:2022-06-25 发布日期:2022-07-05
作者简介:赵川翔(1992—),男,硕士,主要研究方向为合金化热镀锌汽车板生产及应用,E-mail:250753253@qq.com

Analysis of bright spot defect on surface of 590 MPa low-alloy high-strength galvannealed steel sheet

Zhao Chuanxiang

Guangzhou JFE Steel Sheet Company Ltd., Guangzhou Guangdong 511464, China

Received:2022-01-10 Revised:2022-05-06 Online:2022-06-25 Published:2022-07-05

摘要/Abstract

摘要： 采用SEM、EDS分析了590 MPa级低合金高强度热镀锌钢板表面亮点缺陷的形貌及成分。结果表明,低合金高强钢中合金元素选择性氧化析出的颗粒物尺寸较小时,可以被Zn液中Al完全还原。对比正常位置,析出物颗粒位置没有形成完整致密的Fe₂Al₅Zn_x抑制层,在后续热镀锌过程中,该位置Zn-Fe反应扩散快,镀层生长厚。光整时,该位置形成的压缩片状结构相互连结,宏观表征为表面亮点缺陷。通过降低炉内露点可以抑制低合金高强钢表面合金元素外氧化,进而防止镀层表面亮点缺陷产生。

关键词: 低合金高强度热镀锌钢板, 亮点缺陷, 选择性氧化, 露点

Abstract: Morphology and element content of bright spot defect on the surface of 590 MPa galvannealed high-strength steel sheet were investigated by SEM and EDS. The results show that the surface oxides produced by the selective oxidation of alloying elements can be reduced completely by the dissolved Al in the Zn bath when the oxides are small enough in the high-strength low-alloy steel. Compared with the normal position, a complete and dense Fe₂Al₅Zn_x inhibitory layer is not formed at the position of the precipitate particles. In the subsequent hot-dip galvanizing process, the Zn-Fe reaction and diffusion at this position are fast, and the coating grows thicker. During skin pass rolling, the compressed sheet-like structures formed at this position are connected with each other, and their macroscopic feature is the surface bright spot defect. By reducing the dew point in the furnace, the external oxidation of alloy elements on the surface of low-alloy high-strength steel can be inhibited, thereby preventing the occurrence of bright spot defects on the surface of the coating.

Key words: low-alloy high-strength galvannealed steel sheet, bright spot defect, selective oxidation, dew point

中图分类号:

TG174

赵川翔. 590 MPa级低合金高强度热镀锌钢板表面亮点缺陷分析[J]. 金属热处理, 2022, 47(6): 270-273.

Zhao Chuanxiang. Analysis of bright spot defect on surface of 590 MPa low-alloy high-strength galvannealed steel sheet[J]. Heat Treatment of Metals, 2022, 47(6): 270-273.

参考文献

[1]张中武. 高强度低合金钢(HSLA)的研究进展[J]. 中国材料进展, 2016, 35(2): 141-151.
Zhang Zhongwu. Research development of high strength low alloy (HSLA) steels[J]. Materials China, 2016, 35(2): 141-151.
[2]Galibois A, Krishnadev M R, Dubé A. Control of grain size and sub-structure in plain carbon and high strength low alloy (HSLA) steels-the problem and the prospect[J]. Metallurgical Transactions A, 1979, 10(8): 985-995.
[3]康永林. 现代汽车板工艺及成形理论与技术[M]. 北京: 冶金工业出版社, 2009.
Kang Yonglin. Theory and Technology of Processing and Forming for Advanced Automobile Steel Sheets[M]. Beijing: Metallurgical Industry Press, 2009.
[4]李远鹏. 热镀锌DP780双相钢的选择性氧化行为研究[D]. 北京: 钢铁研究总院, 2012.
Li Yuanpeng. A study on selective oxidation behaviors of DP780 dual phase steels during hot-dip galvanizing process[D]. Beijing: Central Iron and Steel Research Institute, 2012.
[5]冯士杰, 江社明, 李远鹏, 等. 预氧化对第三代汽车钢热浸镀锌的影响[J]. 金属热处理, 2014, 39(4): 26-30.
Feng Shijie, Jiang Sheming, Li Yuanpeng, et al. Influence of preoxidation on galvanizability of the third generation automotive steel
[J]. Heat Treatment of Metals, 2014, 39(4): 26-30.
[6]邓照军, 林承江. DP780热镀锌板表面点状缺陷分析[C]//第十一届中国钢铁年会论文集—S04. 表面与涂镀. 中国金属学会, 2017.
[7]吴庆美, 郑连辉, 蔡传博, 等. 热镀锌双相钢中亮点缺陷分析[J]. 金属热处理, 2016, 41(10): 195-197.
Wu Qingmei, Zheng Lianhui, Cai Chuanbo, et al. Defect analysis of bright dot in hot dip galvanized dual phase steel[J]. Heat Treatment of Metals, 2016, 41(10): 195-197.
[8]杜小峰, 陈园林, 孙方义, 等. 合金化热镀锌高强钢JAC590R的组织性能与镀层结构分析[J]. 武钢技术, 2016, 54(5): 36-39.
Du Xiaofeng, Chen Yuanlin, Sun Fangyi, et al. Measurement on structure properties and coating microstructure of galvannealed high strength steel JAC590R[J]. Wisco Technology, 2016, 54(5): 36-39.
[9]郭大伟. 热镀锌合金化镀层腐蚀行为及机理研究[D]. 北京: 钢铁研究总院, 2014.
Guo Dawei. Studies on corrosion behaviour and mechanism of galvannealed coating[D]. Beijing: Central Iron and Steel Research Institute, 2014.
[10]Khondker R, Mertens A, Mcdermid J R. Effect of annealing atmosphere on the galvanizing behavior of a dual-phase steel[J]. Materials Science & Engineering A, 2007, 463(1/2): 157-165.
[11]Liu H, Li F, Shi W, et al. Characterization of hot-dip galvanized coating on dual phase steels[J]. Surface and Coatings Technology, 2011, 205(11): 3535-3539.
[12]Eynde X V, Servais J P, Lamberigts M. Investigation into the surface selective oxidation of dual-phase steels by XPS, SAM and SIMS[J]. Surface and Interface Analysis, 2003, 35(12): 1004-1014.
[13]Alibeigi S, Kavitha R, Meguerian R J, et al. Reactive wetting of high Mn steels during continuous hot-dip galvanizing[J]. Acta Materialia, 2011, 59(9): 3537-3549.
[14]Wagner C. Types of reactions in the oxidation of alloys[J]. Journal of the Electrochemical Society, 1959, 63: 771-775.
[15]Dionne S. The characterization of continuous hot-dip galvanized and galvannealed steels[J]. JOM, 2006, 58(3): 32-40.
[16]王贺贺. 选择性氧化和合金化工艺参数对DP590合金化镀层组织和性能的影响研究[D]. 北京: 钢铁研究总院, 2015.
Wang Hehe. The influence of selective oxidation and galvannealing parameters on the structure and properties of DP590 galvannealed coatings layers[D]. Beijing: Central Iron and Steel Research Institute, 2015.

590 MPa级低合金高强度热镀锌钢板表面亮点缺陷分析

Analysis of bright spot defect on surface of 590 MPa low-alloy high-strength galvannealed steel sheet

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