根据模拟结果，讨论了氢导致铝材料脆化破坏的微观机理。
According to the simulative results, the he fracture mechanism of aluminum is discussed.
再热裂纹与再热脆化的机理相同，两者同时发生，降低应力防止再热裂纹并不能防止再热脆化。
Mechanism of reheat embrittlement and reheat crack is the same. Reheat embrittlement cannot be avoided by reducing stress.
在设备老化机理中，关键问题是中子辐照脆化、腐蚀损伤、疲劳及磨损。
On ageing mechanism of these components, the critical problems are neutron irradiation embrittlement, corrosion damage, fatigue and erosion.
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