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Effects of Cooling Method on Microstructure and Properties of X80 Grade Heating Bending

Tian Chencha

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Abstract

The effects of cooling methods on the microstructure and properties of X80 grade heating bending were studied by thermal simulation, mechanical property test and microscopic analysis. The results show that the strength of X80heating bending increases and the toughness fluctuates while the cooling rate ascends. A superior match between strength and toughness can be obtained due to the fine effective grains and multidirectional laths in BF and GB when experimental steel is cooled in 10%NaCl cooling solution. More PF and QF form in the oil cooling process can lower the strength, and the obtained high toughness is attributed to the mixed multiphase microstructure, fine effective grains and their homogeneity.

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What this paper is about

The effects of cooling methods on the microstructure and properties of X80 grade heating bending were studied by thermal simulation, mechanical property test and microscopic analysis. The results show that the strength of X80heating bending increases and the toughness fluctuates while the cooling rate ascends. A superior match between strength and toughness can be obtained due to the fine effective grains and multidirectional laths in BF and GB when experimental steel is cooled in 10%NaCl cooling solution. More PF and QF form in the oil cooling process can lower the strength, and the obtained high toughness is attributed to the mixed multiphase microstructure, fine effective grains and their homogeneity.

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Available abstract

The effects of cooling methods on the microstructure and properties of X80 grade heating bending were studied by thermal simulation, mechanical property test and microscopic analysis. The results show that the strength of X80heating bending increases and the toughness fluctuates while the cooling rate ascends. A superior match between strength and toughness can be obtained due to the fine effective grains and multidirectional laths in BF and GB when experimental steel is cooled in 10%NaCl cooling solution. More PF and QF form in the oil cooling process can lower the strength, and the obtained high toughness is attributed to the mixed multiphase microstructure, fine effective grains and their homogeneity.

Key concepts: Microstructure, Materials science, Homogeneity (statistics), Toughness, Composite material, Bending, Slow cooling, Thermal

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