New insights into the effect of Al on the selective oxidation of advanced high-strength steels prior to hot-dip galvanizing

doi:10.1016/j.actamat.2024.119651

IMR OpenIR

	New insights into the effect of Al on the selective oxidation of advanced high-strength steels prior to hot-dip galvanizing
	Liu, Zihe 1,2; Nie, Jingpei 1,2; Song, Yuanfang 1,2; Yang, Xiaoguang 1; Mao, Weichen 3; Jin, Xinyan 3; Zhang, Xue 1,2; Rohwerder, Michael 4; Li, Ying 1,2
通讯作者	Zhang, Xue(xuezhang@imr.ac.cn)
	2024-03-01
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	266 页码:12
摘要	Advanced high-strength steels (AHSSs) enable the manufacture of lighter, safer and more energy-saving body-inwhite. However, the poor galvanizability induced by the surface selective oxidation during annealing makes the production of high-grade galvanized AHSS quite challenging. It is generally believed that replacing Si with Al enhances the galvanizability of AHSS, but a recent industrial practice shows the opposite for a high Al steel grade, which indicates complex competing mechanisms introduced by Al. Here, we study the selective oxidation of a model system Fe-Mn-Si-Al systematically by varying the Al content and dew point of annealing atmosphere. We suggest that Al has a dual-side effect on the galvanizability of AHSS via: i) promoting the outward diffusion and subsequent external oxidation of Mn and Si, ii) deteriorating the surface chemistry of galvanizing by enhancing the Si/Mn ratio of surface oxides, iii) facilitating the formation of amorphous film-like external oxides, and iv) a comparatively low trend for Al to segregate to the surface, where the first three function negatively while the last positively. Our work would change the perspective away from a focus solely on the deceleration effect of Al to also consider its acceleration on the surface selective oxidation, insights critical for developing strategies against galvanizing problems of AHSSs.
关键词	High temperature oxidation Selective oxidation Hot-dip galvanizing Advanced high strength steel
资助者	Natural Science Foun- dation of Liaoning, China
DOI	10.1016/j.actamat.2024.119651
收录类别	SCI
语种	英语
资助项目	Natural Science Foun- dation of Liaoning, China[2022 -MS -015]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001164818700001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/184382
专题	中国科学院金属研究所
通讯作者	Zhang, Xue
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Baosteel Res Inst, Shanghai 201900, Peoples R China 4.Max Planck Inst Eisenforschung GmbH, D-40237 Dusseldorf, Germany
推荐引用方式 GB/T 7714	Liu, Zihe,Nie, Jingpei,Song, Yuanfang,et al. New insights into the effect of Al on the selective oxidation of advanced high-strength steels prior to hot-dip galvanizing[J]. ACTA MATERIALIA,2024,266:12.
APA	Liu, Zihe.,Nie, Jingpei.,Song, Yuanfang.,Yang, Xiaoguang.,Mao, Weichen.,...&Li, Ying.(2024).New insights into the effect of Al on the selective oxidation of advanced high-strength steels prior to hot-dip galvanizing.ACTA MATERIALIA,266,12.
MLA	Liu, Zihe,et al."New insights into the effect of Al on the selective oxidation of advanced high-strength steels prior to hot-dip galvanizing".ACTA MATERIALIA 266(2024):12.