| 标题 |
Heat Input and the Liquation Cracking of Laser Welded IN738LC Superalloy
热输入与激光焊接IN738LC高温合金的液化开裂
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作者Montazeri, M (Montazeri, M.) [1] ; Ghaini, FM (Ghaini, F. Malek) [1] ; Ojo, OA (Ojo, O. A.) 摘要：The effects of welding heat input on the heat-affected zone (HAZ) liquation cracking behavior in low power pulsed, laser-welded, IN738LC nickel-based superalloys were studied in both conduction and keyhole modes. The HAZ cracks observed in this study were intergranular liquation cracks associated with the constitutional liquation of grain boundary terminal solidification products, such as gamma-gamma' eutectics and MC carbides. The results showed that the cracking features for the conduction and keyhole modes are different. |
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