Development of the surface structure of TRIP steels prior to hot-dip galvanizing

Bellhouse, Erika M.; Mertens, Anne; McDermid, Joseph R.

doi:10.1016/j.msea.2006.09.117

Cited by 105 publications

(67 citation statements)

References 20 publications

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“…The results are in good agreement with the results of Mahieu et al and Bellhouse et al who analyzed the composition of the surface oxides on TRIP steels by means of XPS. 2,6) The 2MnO · SiO 2 and MnO · SiO 2 oxides seemed to have been formed first on the surface during the annealing process and the amorphous silicon oxide particles, which were covered by the outer Mn-rich xMnO · SiO 2 layers grew in a later stage at the interface between oxide layer and matrix. In the discussion section it will be shown that this is confirmed by the absence of a xMnO · SiO 2 oxide film at the interface between the hemispherical particles and the matrix, as shown in the high resolution image (Fig.…”

Section: Resultsmentioning

confidence: 99%

Formation of Surface and Subsurface Oxides during Ferritic, Intercritical and Austenitic Annealing of CMnSi TRIP Steel

2008

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Section: Resultsmentioning

confidence: 99%

Formation of Surface and Subsurface Oxides during Ferritic, Intercritical and Austenitic Annealing of CMnSi TRIP Steel

2008

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“…Thereby, the reduction of vehicle weight is considered to be the most promising way to enhance fuel economy in the future and consequently to decrease the carbon dioxide emissions. According to Bellhouse et al [1], a 10% reduction of vehicle weight can result in a 6 to 8% reduction in fuel consumption. Based on this idea, the steel industry is developing new high-strength steels (much higher alloy contents) in order to reduce the weight of the vehicle structure, without compromising its ductility, its formability and its crashworthy.…”

Section: Introductionmentioning

confidence: 99%

Study of Grain Boundary Oxidation of High Alloyed Carbon Steels at Coiling Temperature

Ronqueti¹,

Favergeon²,

Risbet³

et al. 2017

Anais Do Seminário De Laminação E Conformação

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The effect of coiling temperature on selective oxidation behaviour of binary and ternary iron-based model alloys containing different contents of Si or Mn were investigated by SEM and SIMS. The experiments were carried out with a temperature ranging from 450 °C to 700 °C, under N2-5%H2 gas flow with a Dew Point of -3.3°C, for different durations. SEM images of binary iron-based model alloys revealed a decrease of grain boundary oxidation depth with increasing Silicon or Manganese content. At 530°C and 600°C SIMS results showed no Silicon diffusion toward surface, contrary to the results analyzed for Fe-x%Mn. Tests results and Wagner's theory application (specific cases Fe-0.2%Si and Fe-0.5%Si) showed that grain boundary oxygen diffusion coefficient "Do GB " is almost 60 to 70 times faster than oxygen bulk diffusion coefficient. These results helped to broaden knowledge of single-element effects on grain boundary oxidation, in addition, will contribute of the future works in new steels with complex alloy compositions.

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“…This suggests that external oxidation of Si and Mn occurs during recrystallization annealing. 16,17) In contrast, Cr undergoes unobvious external oxidation. Based on the dilute solution condition of the steels used in the present study, the Gibbs formation energy (ΔG′) of Cr2O3 was calculated as -517.6 kJ/mol, which is higher than SiO2 and MnO at 1 073 K (-576.0 kJ/mol and -579.1 kJ/mol, respectively).…”

Section: Methodsmentioning

confidence: 99%

Effect of Silicon in Dual Phase Steel on the Alloy Reaction in Continuous Hot-dip Galvanizing and Galvannealing

Lin

2014

ISIJ Int.

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The mechanical properties of steels can be significantly improved by alloying with Si. However, Si in dual phase steel retarded the alloy reaction in hot-dip galvanizing and galvannealing; specifically, a continuous Fe-Zn alloy layer was absent on the steel containing 0.44 wt% Si after 25 s of galvannealing at 500°C. This retardation may be due to the Si-rich molten Zn layer, in which the Si resulted from the aluminothermic reduction of Si oxide and the dissolution from the steel substrate.

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Development of the surface structure of TRIP steels prior to hot-dip galvanizing

Cited by 105 publications

References 20 publications

Formation of Surface and Subsurface Oxides during Ferritic, Intercritical and Austenitic Annealing of CMnSi TRIP Steel

Formation of Surface and Subsurface Oxides during Ferritic, Intercritical and Austenitic Annealing of CMnSi TRIP Steel

Study of Grain Boundary Oxidation of High Alloyed Carbon Steels at Coiling Temperature

Effect of Silicon in Dual Phase Steel on the Alloy Reaction in Continuous Hot-dip Galvanizing and Galvannealing

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