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APPLICATION OF SDS METHOD TO PREDICT FRACTURE TOUGHNESS TEMPERATURE DEPENDENCY OF A533B STEEL

机译:SDS法在A533B钢预测断裂韧性温度依赖性的应用

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Recently, the authors have proposed a new method for scaling the crack tip stress distribution under small scale yielding condition and named it as T-scaling method [1, 2]. This method identifies the different stress loads for materials with different tensile properties but identical in terms of K or J. Then by accepting the knowledge "fracture stress for slip induced cleavage fracture is temperature independent [3]," a framework to predict the fracture load P_c and fracture toughness J_c at an arbitrary temperature from the already known P_(cr) and J_(cr) at a reference temperature T_r was proposed and validated for 0.55% carbon steel JIS S55C [1, 2]. This framework was named as SDS method. This paper presents that the SDS method was valid to predict 1TCT J_c temperature dependency of A533B steel [4] in the range of -9 ≤ T-T_0 ≤ 27 °C, where T_0 is the master curve reference temperature. The SDS method seems to have a possibility to solve the problem the master curve is facing in the relatively higher temperature region, by requiring only tensile tests.
机译:最近,作者提出了一种新方法,用于在小规模屈服条件下缩放裂缝尖应力分布,并将其命名为T形缩放方法[1,2]。该方法识别具有不同拉伸性质的材料的不同应力载荷,但在K或J方面相同。然后通过接受知识“滑移诱导的裂解裂缝的裂缝应力是温度无关[3],”框架预测骨折载荷P_C和断裂韧性J_C在参考温度T_R的已知P_(CR)和J_(CR)的任意温度下进行了提出并验证了0.55%碳钢JIS S55C [1,2]。此框架被命名为SDS方法。本文提出了SDS方法有效,以预测ATCT J_C钢的1TCT J_C温度依赖性[4]在-9≤T-T_0≤27°C的范围内,其中T_0是主曲线参考温度。 SDS方法似乎可以解决问题,通过仅需要拉伸试验,求解主曲线在相对较高的温度区域中面临着相对较高的温度区域。

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