Carbon diffusion mechanism of two-liquid bimetal bond interface on dissimilar carbon steel

Zhu, Yong; Zhang, Wei; Rong, Shou Fan; Yang, Binze; Yang, Han Song

doi:10.1179/1432891714z.000000000433

Materials Research Innovations

2014

DOI: 10.1179/1432891714z.000000000433

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Carbon diffusion mechanism of two-liquid bimetal bond interface on dissimilar carbon steel

Yong Zhu

Wei Zhang

Shou Fan Rong

et al.

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“…The metal wear resistance by the two-liquid composite technology plays an important role in mining application, which can not only raise the production efficiency, but also save the energy and resources. 7,8 In the course of the bimetal casting, the main elements between two kinds of metals are diffused and fused with each other, developing 40-60 μm buffer layer between the low-alloy steel (LAS) and the high-chromium white cast iron (HCWCI). 9,10 The component, microstructure, performance and thickness of the metallurgic composite layer are the key in the bimetal casting process.…”

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Analysis of heat transport and thickness of bimetal composition layer between low-alloy steel and high-chromium white cast iron

Zhu

Zhang

Rong

et al. 2015

Materials Research Innovations

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Two-liquid bimetal casting technique was worthy of being widely used in wear-resistant materials. Research on the fusion mechanism at the bimetal composite layer can lay the theoretic foundation for the extension of the dissimilar ferroalloy composition material. Two-liquid bimetal between the low-alloy steel and high-chromium white cast was prepared by controlling the pouring temperature, and the composite layer microstructure and composition distribution were studied. In accordance with the detected results, two-liquid bimetal casting technique can be assured, and the various casting technique parameters have an obvious effect on the composite layer microstructure. To maintain the casting technique stability, the freezing time and element diffusion of the low-alloy steel were evaluated and analysed. IntroductionThe consumption amount of metal wear-resisting materials is about three million tons per year, and that for the seven main wear-resistance steel and iron materials reaches around two million tons per year. 1-3 The hammer used in the crusher is an important aspect of wear-resistant casting, and its service life is about 7-20 days, and some are about 8 hours. For instance, the consumption quantity of the high manganese steel hammer in Yunnan province is about 4800-5200 tons. 4-6 The bimetal cast hammer has the feature of superior integrative performance and longer service life. The metal wear resistance by the two-liquid composite technology plays an important role in mining application, which can not only raise the production efficiency, but also save the energy and resources. 7,8 In the course of the bimetal casting, the main elements between two kinds of metals are diffused and fused with each other, developing 40-60 μm buffer layer between the low-alloy steel (LAS) and the high-chromium white cast iron (HCWCI). 9,10 The component, microstructure, performance and thickness of the metallurgic composite layer are the key in the bimetal casting process. Exploring bimetal composite law and building technological parameter model have a practical significance. Experimental methods Experimental materials and preparationTwo-liquid bimetal was prepared with HCWCI and LAS, and two kinds of constituents are listed in Table 1.To better control different pouring temperatures, two medium frequency furnaces were equipped for melting the HCWCI and LAS. First, the melting LAS was poured into the CO 2 sodium silicate bonded sand mould cavity by CO 2 hardening technique under 1550°C, then the HCWCI was immediately poured into the rest of the sand mould cavity under the same intervening time at 1550°C as in Fig. 1.Two kinds of molten metal were poured into the sand mould cavity, and the obtained proper practical temperature of the LAS is individually listed in Table 2. The pouring temperatures of the LAS have an essential effect on the metallurgical bonding ability between the LAS and the HCWCI. Furthermore, the metallurgy bonding region was researched for estimating the twoliquid bimetal technology feasibility. The bimeta...

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Analysis of heat transport and thickness of bimetal composition layer between low-alloy steel and high-chromium white cast iron

Zhu

Zhang

Rong

et al. 2015

Materials Research Innovations

Self Cite

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Density functional theory investigation on the stability, adhesion strength, tensile properties and fracture behavior of γ-Fe/Cu heterogeneous nucleation interface

Wang

Zhang

et al. 2021

Results in Physics

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The new sight to Fe–C system

Liu,

Li,

et al. 2024

Philosophical Magazine

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Carbon diffusion mechanism of two-liquid bimetal bond interface on dissimilar carbon steel

Cited by 3 publications

References 4 publications

Analysis of heat transport and thickness of bimetal composition layer between low-alloy steel and high-chromium white cast iron

Analysis of heat transport and thickness of bimetal composition layer between low-alloy steel and high-chromium white cast iron

Density functional theory investigation on the stability, adhesion strength, tensile properties and fracture behavior of γ-Fe/Cu heterogeneous nucleation interface

The new sight to Fe–C system

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