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首页> 外文会议>17th European conference on fracture : Multilevel approach to fracture of materials, components and structures : Book of abstracts amp; proceedings on CD ROM >Effect of Intercritical Annealing on Fracture Behaviour of 10GN2MFAGrade Steel
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Effect of Intercritical Annealing on Fracture Behaviour of 10GN2MFAGrade Steel

机译：临界退火对10GN2MFAGrade钢断裂行为的影响

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The effect of intercritical annealing of 10GN2MFA grade steel on mechanical properties andrnfracture behaviour is studied in this paper. This type of low alloy banitic steel is usually used forrnproduction of collector bodies of steam generators for nuclear power station of VVER type. Thisrnarticle is focused on optimalization of fundamental utility properties and heat treatment process ofrnthe steel under investigation to increase toughness and critical temperature of brittleness. Anrnintecritical annealing has been chosen as a useful tool for such improvement. Mechanical propertiesrnand impact notch toughness values after the intercritical annealing and conventional heat treatmentrnregimes are compared. Effect of simulation of stress relieving including minimum and maximumrnallowable heating regimes on fracture properties is studied too. Intercritical annealing was added tornthe conventional quality heat treatment process, between quenching (normalizing) and tempering.rnThe application of intercritical annealing improved the impact toughness significantly, an increasernin the upper shelf energy and a decrease in transition temperature of steel under investigation.
机译：研究了10GN2MFA级钢的临界退火对力学性能和断裂行为的影响。这种类型的低合金banitic钢通常用于生产VVER型核电站用蒸汽发生器的集热体。本文旨在研究钢的基本实用性能和热处理工艺的优化，以提高韧性和脆性临界温度。选择非临界退火作为这种改进的有用工具。比较了临界退火和常规热处理制度后的力学性能和冲击缺口韧性值。还研究了包括最小和最大允许加热方式在内的应力消除模拟对断裂性能的影响。在淬火（正火）和回火之间，在传统的优质热处理工艺中增加了临界退火。临界退火的应用显着提高了冲击韧性，增加了上架能量，并降低了所研究钢的转变温度。

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