Effect of melt superheating treatment on the cast structure of K465 nickel-based superalloy
来源期刊：Rare Metals2009年第2期
论文作者：PEI Zhongyea,b,ZHAO Minghanb,TIAN Yanwena,LI Juntaob,CHEN Xingfub,and WU Jiantaob a School of Material and Metallurgy,Northeastern University,Shenyang ,China b High Temperature Materials Research Division,Central Iron and Steel Research Institute,Beijing ,China
文章页码：193 - 196
摘 要：The cast structure of a K465 nickel-based superalloy with different temperatures of melt superheating treatment was studied. It is shown that melt superheating treatment plays a significant role in the grain size and carbide morphology. With increasing melt superheating temperature （below 2023 K）,the grain size increases obviously and the carbide morphology is changed from a blocky to a script-like shape. However,when the melt superheating temperature is between 2023 K and 2123 K,the grain size decreases gradually,and the morphology of the MC carbide changes back to the blocky appearance. The content of W is also influenced by melt superheating treatment.
摘要：The cast structure of a K465 nickel-based superalloy with different temperatures of melt superheating treatment was studied. It is shown that melt superheating treatment plays a significant role in the grain size and carbide morphology. With increasing melt superheating temperature （below 2023 K）,the grain size increases obviously and the carbide morphology is changed from a blocky to a script-like shape. However,when the melt superheating temperature is between 2023 K and 2123 K,the grain size decreases gradually,and the morphology of the MC carbide changes back to the blocky appearance. The content of W is also influenced by melt superheating treatment.
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