Influence of Cr on the interfacial boride reaction between Fe-Cr-B cast steel and molten aluminium

Zhang, Xianman; Chen, Weiping; Luo, Hongfeng; Ling, Zicheng; Wang, Juan; Zhou, Teng; Li, Shuang

doi:10.1016/j.corsci.2019.108098

Cited by 26 publications

(3 citation statements)

References 38 publications

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“…Due to the difference in the number of thermal expansion between the complex metal boride phases, microcracks may be caused between these layers during cooling. [36][37][38] The samples were boronized at 950°C for 2 h, and then these samples were tested for corrosion at different times. Figure 6 shows samples exposed to corrosion for 10 h: (a) SEM image, (b) EDAX analysis.…”

Section: Corrosion Ratementioning

confidence: 99%

Increasing corrosion resistance of AISI 1010 steel by boride coatings

Bayça

Bican

2022

Materials & Corrosion

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Boriding is the process of coating the metal surface with a ceramic metal boride layer by the diffusion method. Iron borides, one of the metal borides, are called ceramics because they are covalently bonded compounds. Iron boride coatings contain strong Fe-B and B-B covalent bonds. In this study, the effect of boronizing on the corrosion resistance of AISI 1010 steel was investigated. Baybora-1 which has recently been patented was used as boronizing agent. AISI 1010 steel was borided at 950°C for 2, 4, and 6 h using the solid method. The microstructure, hardness, and corrosion rate of the samples were investigated. The change in the corrosion rate of the samples was determined by the corrosion test specified in the ASTM G31-72 standard.The results showed that the hardness of the iron boride layer formed on the surface as a result of the boronizing process was greater than that of the matrix. As a result of the boriding process, the hardness of the iron boride layer on the steel surface reached approximately eight times the hardness of the substrate matrix. The thickness of the iron boride layer on the steel sample surface was measured at 950°C for 2 and 6 h, respectively, as 45 ± 12 and 155 ± 13 µm. It was concluded that the boriding process increased the corrosion resistance of steel.

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Section: Corrosion Ratementioning

confidence: 99%

Increasing corrosion resistance of AISI 1010 steel by boride coatings

Bayça

Bican

2022

Materials & Corrosion

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“…The mould is constantly lubricated, and corrosion cannot occur due to exposure to oxygen or water. But molten aluminium has a high chemical activity which can lead to the corrosion of the workpiece [6][7][8][9][10]. Due to the size of the tool in the event of a failure, it is almost impossible to replace it in some cases.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Welding Filler Material on the Mechanical and Corrosive Behavior of Böhler W350 ISOBLOC Hot Forming Tool Steel

Szovák

Korsós²,

Kemény³

et al. 2023

Period. Polytech. Mech. Eng.

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In this study, the effects of different welding filler materials were examined in the case of repair welding of pressure infiltration casting tool made out of Böhler W350 ISOBLOC hot forming tool steel. Three additional welding filler materials were used: Böhler W350 ISOBLOC (same as the raw material), Böhler W300 ISOBLOC and Anviloy® 1150 tungsten alloy. The welds were created with TIG welding method. The used welding filler material has an impact on the mechanical and corrosive properties of the tool. The hardness of the weld was measured to determine its resistance against mechanical stress. The corrosion rate was measured because molten aluminium corrodes workpieces due to its high chemical activity. It was concluded that a single-pass weld corrosion speed is 0.142 ± 0.010 mm/year while a weld containing multiple layers and passes has the corrosion speed of 0.069 ± 0.005 mm/year which is approximately 48% of the corrosion speed of the single-pass weld. Furthermore, the hardness of a weld made with W350 welding filler material significantly drops in the upper layers of the weld, down to 273 HV1 while the hardness of the base material is 495 ± 8 HV1. The results show that the multiple layers and passes welds have better corrosion resistance and less hardness than the single-pass weld.

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“…It is mainly attributed to the formation of Fe2B borides, in particular the primary Cr-rich Fe2B borides, which can act as physical barriers against the diffusion of Al atoms, effectively improving the corrosion resistance of high boron cast steels. In addition, after a long incubation time of liquid aluminum attacking the (Cr,Fe)2B, the IMCs with peculiar periodic layered structures (PLSs) may form in the corrosion layer [81][82][83] , as shown in Fig. 14.…”

Section: Introducing Secondary Phasementioning

confidence: 99%