بررسي خواص جوش سوپرآلياژ پايه نيكل UDIMET 025 در روش GIAW

In this method has been studied mechanism and causes and ways of deleting or decreasing of hot cracking in welding Nickel base super alloy (UDIMET 520) in the way of GTAW.in this study it has been used scanning electron microscopy (SEM) machine and quantometry. The results of this tests show that interesting to solidification hot cracking at the time of the super alloy welding with internal temperature above the melding and increasing percentage of ALTi is numerous and interasting to melting hot cracking because of heterogeneity of melting structure and segregation it become stronger for quick warming in welding.