The role of the microstructural changes during induction preheating on the HAZ liquation cracking susceptibility of Ni-based superalloy
Łukasz Rakoczy,
Małgorzata Grudzień-Rakoczy,
Bogdan Rutkowski
et al.
Abstract:This work presents the influence of high-frequency induction preheating (900, 1000, 1100 °C) on liquation crack formation in the René 108 Ni-based superalloy. The investigation was divided into two parts: (1) characterization of the material's microstructure after preheating and (2) determining the influence of preheating on liquation cracking during autogenous gas tungsten arc welding. During preheating, the dissolution of γ′ precipitates showed accelerated progress with increase in temperatures. This dissolu… Show more
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