Microstructure analysis of gray cast iron
Graphite in gray cast iron is a weak phase, and its strength is close to zero. If there is a […]
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gray cast iron
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Preparation and test methods of gray cast iron specimen materials
Gray cast iron with different carbon equivalent Ce (3.2%, 3.4%, 3.6%, 3.8%, calculated by ce=si/3+ct, Si is taken as the
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Friction and wear properties of gray cast iron surface after graphitization annealing
Friction and wear tests were carried out on three gray cast iron samples annealed at 700 ℃, 800 ℃ and
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Effect of low carbon equivalent on Microstructure and properties of gray cast iron
Gray cast iron has become the preferred material for automotive parts such as engine and cylinder block because of its
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Graphite transformation in laser modified layer of gray cast iron
After cementite decomposition, carbon atoms diffuse from cementite austenite interface to graphite austenite interface. During annealing, carbon atoms in austenite
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Changes of matrix structure of laser modified surface graphitization annealing of gray cast iron
Three kinds of gray cast iron samples annealed after heating to 700 ℃, 800 ℃ and 900 ℃ were tested
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Friction and wear test of laser melting layer of gray cast iron
Friction coefficient and wear amount are important parameters to characterize the wear resistance of materials. The higher the surface hardness
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Effect of amplitude on graphite morphology and primary austenite of vibration lost foam casting gray cast iron
The effects of vibration frequency and amplitude on graphite morphology, primary austenite and properties of vibration lost foam casting gray
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Microhardness test of laser melting layer of gray cast iron
After laser melting, the microhardness of gray cast iron surface in different areas is divided into three obvious sections, among
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Metallographic structure change of melting layer of gray cast iron after laser shock
Fig. 1 corresponds to the cross-sectional morphology of the surface of gray cast iron melting layer after continuous impact of
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Surface residual stress induced by laser shock in gray cast iron
Due to the temperature gradient generated in the process of laser melting of gray cast iron and the transformation of
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Graphite transformation in laser melting layer of gray cast iron sample
When the temperature in the molten pool rises rapidly, the convection inside the molten pool is strong, which adds to
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Non equilibrium solidification microstructure of laser melting layer of gray cast iron sample
In the process of rapid cooling of the molten pool, due to the extremely fast cooling speed, non-equilibrium solidification occurs
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Phase and microstructure analysis of laser melting layer of gray cast iron sample
The surface structure of untreated gray cast iron sample is pearlite (P) and graphite (g). From the XRD spectrum of
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Casting technology of gray cast iron engine cylinder block
The growth mechanism of tin crystal was discussed by means of lower microstructure observation and thermodynamic calculation. The effects of
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Microstructure and properties of gray cast iron engine block
Aiming at the process of producing gray cast iron engine block by sand casting, the casting process of gray cast
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Surface morphology and properties of gray cast iron
Through the combination of experimental simulation and experiment, the improvement effect of laser melting, laser shock and graphitization annealing process
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Slag hole defect of gray cast iron
There are many factors that cause slag hole defects, such as raw material composition of gray cast iron, slag removal
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Thermal reconstruction and properties of surface microstructure of gray cast iron
The combination of laser melting, laser shock and graphitization annealing process of gray cast iron was applied to the study
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Slag hole casting defects of gray cast iron slag hole
Slag hole (including sand hole) is also one of the common defects of gray cast iron cylinder block produced by
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Effect of laser shock on graphitization annealing time of gray cast iron
The results show that the graphitization annealing of white cast iron takes a long time. When annealing at 800 ℃,
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Porosity casting defects of gray cast iron
Most of all kinds of porosity casting defects are located in the key parts of the cylinder block, and the
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Study on graphitization annealing of laser modified surface of gray cast iron
Although the surface hardness of gray cast iron after laser melting and impact is greatly improved, the microstructure toughness of
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Porosity defect of gray cast iron
Porosity casting defect has always been the most common defect in sand casting gray iron castings. It refers to the
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White tendency of gray cast iron
The solidification process of iron carbon alloy plays a decisive role in its final structure. Depending on the cooling rate,
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Effect of amplitude on mechanical properties of gray cast iron
(1) Effect of amplitude on hardness of gray cast iron Figure 1 shows the change curve of Brinell hardness of
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Study on Microstructure and properties of gray cast iron by laser melting and laser shock
Through the experimental study of laser melting and laser melting impact on gray cast iron, the changes of microstructure and
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Form_ Effect of material coupling element on fatigue wear resistance of gray cast iron
By imitating the surface characteristics of wear-resistant organisms, the bionic non smooth surface morphologies of point, strip and mesh are
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Formation and elimination of common defects in gray cast iron
The cylinder block is the framework of the automobile engine, with thin wall and complex structure. In the casting production,
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Surface microstructure of gray cast iron
The existence of flake graphite in the middle layer of gray cast iron seriously affects the improvement of its properties.