FINITE ELEMENT COMPUTATION OF GRAIN-BOUNDARY MICROSTRESS IN HIGH MANGANESE STEEL

Abstract

Abstract: By FEM, simulate and calculate the microstress in grain and grainboundary hard-shell of high Mn in different Mn segregation levels. The results show that the extent of grainboundary stress concentration will increase greatly as the grainboundary concentration of Mn element and the thickness of the hard-shell increase. The hard shell due to grainboundary segregation of Mn element is very harmful to the fracture property of high Mn steel, and the simulation computation confirms that the grainboundary stress concentration is the main reason of brittle fracture in high Mn steel.

Key words: FEM, High manganese steel, Stress computation, creep, IVR, RPV, ultimate load capacity, critical heat flux

CLC Number:

TG144

Chen Da;Xue Kanshi;Wang Wei;Wang Bin Sun Dayong. FINITE ELEMENT COMPUTATION OF GRAIN-BOUNDARY MICROSTRESS IN HIGH MANGANESE STEEL[J]. , 1998, 34(6): 1-4.

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FINITE ELEMENT COMPUTATION OF GRAIN-BOUNDARY MICROSTRESS IN HIGH MANGANESE STEEL

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