The fractography of this alloy is changed from dimple fracture into cleavage fracture and inter-granular rapture with the extension of aging time.

• 另外,该不锈钢的CVN冲击试样断口形貌随着时效时间的延长由韧性断裂机制的韧窝断裂为主向脆性断裂机制的准解理断裂和穿晶断裂为主变化。