Influence of Cr addition on hot-dip galvanizing reaction of Mn containing sheet steel

被引：2

作者：

Kawano, T. ^{[1
]}

Fushiwaki, Y. ^{[2
]}

Nagataki, Y. ^{[3
]}

Nagoshi, M. ^{[1
,4
]}

机构：

[1] JFE Steel Corp, Steel Res Lab, Kawasaki Ku, 1-1 Minamiwatarida Cho, Kawasaki, Kanagawa 2100855, Japan

[2] JFE Steel Corp, Steel Res Lab, 1 Kokan Cho, Fukuyama, Hiroshima 7218510, Japan

[3] JFE Steel Corp, Steel Res Lab, Chuo Ku, 1 Kawasaki Cho, Chiba 2600835, Japan

[4] JFE Technores Corp, Kawasaki, Kanagawa 2100855, Japan

来源：

SURFACE AND INTERFACE ANALYSIS | 2018年 / 50卷 / 11期

关键词：

galvanizing; high-strength steel; Mn-Cr spinel; selective surface oxidation; SURFACE OXIDATION; O SYSTEM; BEHAVIOR; MANGANESE; OXIDES;

D O I：

10.1002/sia.6447

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

To clarify the influence of Cr on the galvanizability of a sheet steel containing Mn, a Cr-added Mn steel and a Cr-free Mn steel were compared in terms of selective surface oxidation and interfacial reaction during galvanizing with a molten Zn bath containing Al. The surface oxides formed by selective oxidation on the Cr-added steel were identified as Mn-Cr spinel in addition to MnO, whereas only MnO was found on the Cr-free steel. Analyses of the coating interface of the galvanized samples revealed that a columnar zeta-phase Fe-Zn intermetallic compound was formed on both of the Cr-added and Cr-free steels. Furthermore, a granular Fe-Zn intermetallic compound was found anomalously on the Cr-added steel, which was (inverted right perpendicular)(1)-phase containing a higher Fe content compared with the zeta -phase. The most remarkable feature was that Al from the molten Zn preferentially reacted with the Mn-Cr spinel more than the Fe of the substrate steel on the Cr-added steel during the galvanizing. This reaction could suppress the formation of the Fe-Al intermetallic compound, which is generally formed and inhibit a reaction between Zn and Fe in a normal galvanizing process, and instead lead to the formation reaction of the Fe-Zn intermetallic compound to make the Fe content higher to form (inverted right perpendicular)(1)-phase. These results indicate that the performance in the galvanizing process can be controlled by Cr addition through the modification of the surface oxides.

引用

页码：1058 / 1064

页数：7

共 14 条

[1]

[Anonymous], CAMP ISIJ

[2]

Arata Y., 1982, TETSU LO HAGANE, V68, P2413, DOI [10.2355/tetsutohaganel955.68.16_2413, DOI 10.2355/TETSUTOHAGANEL955.68.16_2413]

[3] Studies of the morphology of the Al-Rich interfacial layer formed during the hot dip galvanizing of steel sheet [J].

Baril, E ;

Lespérance, G .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (03) :681-695

[4]

Ellingham H J T., 1944, J SOC CHEM IND LOND, V63, P125, DOI [10.1002/jctb.5000630501, DOI 10.1002/JCTB.5000630501]

[5] Determination of the nature of metal-oxide interfacial interactions from sessile drop data [J].

Eustathopoulos, N ;

Drevet, B .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 249 (1-2) :176-183

[6] Critical evaluation and thermodynamic modeling of the Mn-Cr-O system for the oxidation of SOFC interconnect [J].

Jung, IH .

SOLID STATE IONICS, 2006, 177 (7-8) :765-777

[7] On the in-situ aluminothermic reduction of manganese oxides in continuous galvanizing baths [J].

Kavitha, Ranganathan ;

McDermid, Joseph R. .

SURFACE & COATINGS TECHNOLOGY, 2012, 212 :152-158

[8] Studies on wetting behavior of hot-dip galvanizing process by use of model specimens with tailored surface oxides [J].

Kawano, Takashi ;

Renner, Frank U. .

SURFACE AND INTERFACE ANALYSIS, 2012, 44 (08) :1009-1012

[9] Effect of annealing atmosphere on the galvanizing behavior of a dual-phase steel [J].

Khondker, R. ;

Mertens, A. ;

McDermid, J. R. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 463 (1-2) :157-165

[10] Thermodynamic assessment of the Cr-Mn-O system [J].

Kjellqvist, Lina ;

Selleby, Malin .

JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 507 (01) :84-92

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