Influence of austenitisation temperatures during hot stamping on the local electrochemical behaviour of 22MnB5 steel coated with hot-dip Al-Si

被引：15

作者：

Couto, Camila Pucci ^{[1
,2
,3
]}

Revilla, Reynier, I ^{[2
]}

Politano, Rodolfo ^{[1
]}

Costa, Isolda ^{[1
]}

Panossian, Zehbour ^{[3
]}

De Graeve, Iris ^{[2
]}

Rossi, Jesualdo Luiz ^{[1
]}

Terryn, Herman ^{[2
]}

机构：

[1] Mat Sci & Technol Ctr, Nucl & Energy Res Inst, Av Prof Lineu Prestes 2242, BR-05508000 Sao Paulo, Brazil

[2] Vrije Univ Brussel, Dept Chem & Mat, Res Grp Electrochem & Surface Engn, Pl Laan 2, B-1050 Brussels, Belgium

[3] Inst Technol Res, Lab Corros & Protect, Av Prof Almeida Prado 532, BR-05508901 Sao Paulo, Brazil

来源：

CORROSION SCIENCE | 2021年 / 190卷

关键词：

Hot stamping; Austenitisation temperature; Hot-dip Al-Si; Electrochemical behaviour; Scanning kelvin probe force microscopy; INTERMETALLIC COMPOUND FORMATION; CORROSION BEHAVIOR; TERNARY-SYSTEM; MICROSTRUCTURE; SILICON; PHASES; SEM; AFM;

D O I：

10.1016/j.corsci.2021.109673

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Scanning Kelvin probe force microscopy was used to evaluate the effect of austenitisation temperatures during hot stamping on the local electrochemical behaviour of 22MnB5 steel coated with hot-dip Al-Si. A variation in the austenitisation temperature around 50 degrees C substantially altered the coating morphology as well as the local electrochemical behaviour of the system (coating/steel). Both coating layer and steel substrate became nobler as the austenitisation temperature increased. The former was due to the overall iron enrichment while the latter was related to the microstructural transformation during quenching. Therefore, the driving force for cathodic protection decreased as the austenitisation temperature increased.

引用

页数：12

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