The growing process of thermal fatigue cracking,in steel 3Cr2WSV was observed under desk SEM fitted with sell-made minisized device for thermal faligue test.Before the growing of thermal fatigue crack,the main crack t...The growing process of thermal fatigue cracking,in steel 3Cr2WSV was observed under desk SEM fitted with sell-made minisized device for thermal faligue test.Before the growing of thermal fatigue crack,the main crack tip reveals to blunt firstly,and some holes and uncontinuous microcraeks occur in front of it.The growth is developed by bridging of main crack together with holes and microcracks.展开更多
As an effective and economical surface strengthening method, flame spray technology is now widely used in surface shielding of engineering materials and equipments or parts repairments. However, the porosities inside ...As an effective and economical surface strengthening method, flame spray technology is now widely used in surface shielding of engineering materials and equipments or parts repairments. However, the porosities inside the coating and the poor bonding of the coating strength展开更多
文摘The growing process of thermal fatigue cracking,in steel 3Cr2WSV was observed under desk SEM fitted with sell-made minisized device for thermal faligue test.Before the growing of thermal fatigue crack,the main crack tip reveals to blunt firstly,and some holes and uncontinuous microcraeks occur in front of it.The growth is developed by bridging of main crack together with holes and microcracks.
文摘As an effective and economical surface strengthening method, flame spray technology is now widely used in surface shielding of engineering materials and equipments or parts repairments. However, the porosities inside the coating and the poor bonding of the coating strength
