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首页> 外文期刊>International Journal of Fracture >Assessment of effect of ductile tearing on cleavage failure probability in ductile to brittle transition region
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Assessment of effect of ductile tearing on cleavage failure probability in ductile to brittle transition region

机译：韧性撕裂对脆性过渡区卵泡切割失效概率影响的评价

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摘要

The fracture behaviour of ferritic and ferritic martensitic steels in ductile to brittle transition (DBT) region has been extensively studied in recent years and a probabilistic approach of master curve method is generally used to describe the fracture toughness of BCC steels in DBT region as a function of temperature. The assessment of cleavage failure probability however is still untouched in the upper region of ductile to brittle transition, although various extensions of master curve approach and various local approaches has been explored. Additionally the geometry and loading in tension and bending also adds up to the difficulties when cleavage failure is assisted with prior ductile tearing. In this work the cleavage fracture is investigated in upper region of DBT and a modified master curve approach is presented which can satisfactorily describe the fracture toughness as a function of temperature as well as amount of ductile tearing preceded by cleavage.
机译：近年来广泛研究了铁素体和铁素氏菌马氏体钢在脆性转变（DBT）区域的断裂行为，并且通常用于描述DBT区域中BCC钢的断裂韧性作为函数的概率方法 温度。 然而，裂解失效概率的评估仍然在脆性转型的韧性的上部区域中不受干扰，尽管已经探索了主曲线方法和各种局部方法的各种延伸。 另外，当乳化破裂衰竭辅助之前的韧性撕裂时，张力和弯曲中的几何和装载也会增加困难。 在这项工作中，研究了DBT的上部区域的切割骨折，并提出了改性的主曲线方法，其可以令人满意地描述作为温度的函数的断裂韧性以及裂解前的延展性撕裂量。

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