| 辐照金属氦脆的微观机理及统计特性 |
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| 引用本文： | 刁小雪,何远航.辐照金属氦脆的微观机理及统计特性[J].北京理工大学学报,1993,13(1):10-16. |
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| 作者姓名： | 刁小雪 何远航 |
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| 作者单位： | 北京理工大学应用物理系，北京理工大学应用物理系，北京理工大学应用物理系 北京 100081，北京 100081，北京 100081 |
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| 摘 要： | 用非平衡态统计物理方法研究在高温与中子辐照的环境中金属材料的氦脆化.首先建立了金属中氦泡的演化方程,在讨论氦泡成核和长大机理的基础上,求得了氦泡的成核与长大速率及涨落长大系数,最终导出了氦泡密度分布函数和金属发生氦脆断裂时的临界氦泡半径。
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| 关 键 词： | 辐照 断裂力学 金属 脆化 氢脆 |
Micromechanisms and Statistical Characteristics for the Helium Embrittlement of Irradiated Metals |
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| Diao Xiaoxue He Yuanhang Xing Xiusan.Micromechanisms and Statistical Characteristics for the Helium Embrittlement of Irradiated Metals[J].Journal of Beijing Institute of Technology(Natural Science Edition),1993,13(1):10-16. |
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| Authors: | Diao Xiaoxue He Yuanhang Xing Xiusan |
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| Abstract: | Nonequilibrium statistical method is used to study the helium embrittlement of metals under neutron irradiation and high temperature. The evolution equation of helium bubbles is established. On the basis of discussion about the micromechanisms of nucleation and growth of helium bubbles the nucleation rate and the growth rate of helium bubbles, the fluctuation growth coefficient are obtained, and consequently, the density distribution function of helium bubbles and the critical radius of helium bubbles for helium embrittlement fracture are derived theoretically. |
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| Keywords: | radiation embrittlenients fracture mechanics / density distribution function of helium bubbles |
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