材料科学
断裂韧性
脆性
钨
位错
剪切(地质)
模数
量子纠缠
剪切模量
断裂(地质)
脆性断裂
模数
凝聚态物理
热力学
复合材料
物理
冶金
量子力学
量子
作者
Khanh Chau Le,Hi Won Jeong,Minh Tuan Tran
出处
期刊:Physical review
日期:2023-05-16
卷期号:107 (5)
被引量:4
标识
DOI:10.1103/physreve.107.055006
摘要
In this paper, two improvements to the theory of transition from brittle to ductile fracture developed by Langer [J. S. Langer, Phys. Rev. E 103, 063004 (2021)2470-004510.1103/PhysRevE.103.063004] are proposed. First, considering the drastic temperature rise near the crack tip, the temperature dependence of the shear modulus is included to better quantify the thermally sensitive dislocation entanglement. Second, the parameters of the improved theory are identified by the large-scale least-squares method. The comparison between the fracture toughness predicted by the theory and the values obtained in Gumbsch's experiments for tungsten at different temperatures [P. Gumbsch et al., Science 282, 1293 (1998)10.1126/science.282.5392.1293] shows good agreement.
科研通智能强力驱动
Strongly Powered by AbleSci AI