Characterization of micro/macrostructure of laser cladded Inconel 718 with increased deposition rates as related to the mechanical properties
Characterization of micro/macrostructure of laser cladded Inconel 718 with increased deposition rates as related to the mechanical properties
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激光熔覆 Inconel 718 的微观/宏观结构表征，沉积速率与机械性能相关
DOI：
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发表时间：
2011
期刊：
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通讯作者：
I. Kelbassa
中科院分区：
文献类型：
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作者：
J. Witzel;Salay Stannard;A. Gasser;I. Kelbassa
目前，高价值的1类喷气发动机部件，如叶盘(叶片集成盘)，是通过五轴铣削、线性摩擦焊接和电化学加工等传统技术制造的，时间和成本都很高。弗劳恩霍夫创新集群“TurPro”中的这个项目使LMD工艺成为镍和钛合金基整体叶盘的一种新的“绿色制造”方法。在致力于BLISK叶片添加剂制造的工艺认证时，质量保证和可预测的材料性能仍然是一个主要问题。本文介绍了采用高达7000Mm~3/ 的激光熔覆速率对In718激光熔覆组织进行研究的结果。给出了工艺参数、枝晶间距和所产生的Nb偏析力学性能之间的三元关系。目前，高价值的一级喷气发动机部件，如叶盘(叶片集成盘)，是通过五轴铣削、线性摩擦焊接和电化学加工等传统技术制造的，成本和时间都很高。弗劳恩霍夫创新集群“TurPro”中的这个项目使LMD工艺成为镍和钛合金基整体叶盘的一种新的“绿色制造”方法。在致力于BLISK叶片添加剂制造的工艺认证时，质量保证和可预测的材料性能仍然是一个主要问题。本文介绍了采用高达7000Mm~3/ 的激光熔覆速率对In718激光熔覆组织进行研究的结果。给出了工艺参数、枝晶间距和由此产生的力学性能与Nb偏析之间的三元关系。
Currently, high value Class 1 jet engine components such as BLISKs (Blade Integrated DiSKs) are manufactured by time and cost-prohibitive conventional techniques, such as five-axis milling, linear friction welding and electro chemical machining. This project within the Fraunhofer Cluster of Innovation “TurPro” qualifies the LMD process as a new “green manufacturing” method for nickel and titanium alloy-based BLISKs. Quality assurance and predictable material properties remain a major concern when aiming for a process certification of additive manufacturing of BLISK blades. This paper presents the results of a microstructure investigation of laser cladded IN 718 using increased deposition rates of up to 7000 mm3/min. Presented are the ternary relations between process parameters, dendrite arm spacing and resulting mechanical properties with respect to niobium segregation.Currently, high value Class 1 jet engine components such as BLISKs (Blade Integrated DiSKs) are manufactured by time and cost-prohibitive conventional techniques, such as five-axis milling, linear friction welding and electro chemical machining. This project within the Fraunhofer Cluster of Innovation “TurPro” qualifies the LMD process as a new “green manufacturing” method for nickel and titanium alloy-based BLISKs. Quality assurance and predictable material properties remain a major concern when aiming for a process certification of additive manufacturing of BLISK blades. This paper presents the results of a microstructure investigation of laser cladded IN 718 using increased deposition rates of up to 7000 mm3/min. Presented are the ternary relations between process parameters, dendrite arm spacing and resulting mechanical properties with respect to niobium segregation.