MORPHOLOGICAL EVOLUTION DURING DIFFUSIVE HEALING OF INTERNAL CRACKS WITHIN GRAINS OF α-IRON

• 作 者: 张海龙 孙军
• 机 构: StateKeyLaboratoryforMechanicalBehaviorofMaterials
• 出 处: 力学学报：英文版
• 发表日期: 2002年5期
• 关键词: FATIGUE MICRO-CRACK MORPHOLOGICAL evolution VOID DIFFUSION fatigue micro-crackmo
• 基金项目: The project supported by the National Outstanding Young Investigator Grant of China (59925104),the National Natural Science Foundation of China (59889101)

Micron-sized internal cracks were introduced into rounded bars ofpure iron by low cycle fatigue,and the cracks had irregular penny-shaped morphologywith the critical diameter of about 30μm and the thickness of 0.5～1.5μm.The initi-ation and propagation of