【摘要】 作者用前人对C-Mn钢韧断机理的研究成果,导出了中温区断裂韧度K_e和温度T的关系式。这个关系式与国外学者的实验结果和本文作者对BHW35钢在80～350℃范围内所做的实验结果吻合得很好。文中讨论了BHW35钢的COD阻力曲线特性和塑性失稳特性。这些结果和文中所给出的K_c-T关系式对工程设计和缺陷评定都是有用的。更多还原

【Abstract】 Using the results from the study of ductile fracture mechanism of C-Mn steel, the authors try to investigate the possible elation between fracture toughness K_e and temperature T. The relation seems good as compared with the results from the experiments performed by several foreign researchers and the authors of this paper having tested BHW35 steel at the temperature from 80 to 350℃. The behaviour of the COD resistant curves and the plastic instability of BHW35 steel is discussed. All the results and the K-T relations given in this paper may be useful in engineering design and defect assessment.更多还原