Effect of Ti and Al on microstructure and partitioning behavior of alloying elements in Ni-based powder metallurgy superalloys

Shao, Yinlong; Xu, Jie; Wang, Hao; Zhang, Yiwen; Jia, Jian; Liu, Jiantao; Huang, Hailiang; Zhang, Ming; Wang, Zhicheng; Zhang, Hongfei; Hu, Bin

doi:10.1007/s12613-019-1757-1

Cited by 15 publications

(4 citation statements)

References 11 publications

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“…This is the opposite tendency compared to the previously mentioned Al element. It is well known that Ti encourages the formation of γ with Al [22]. These results may help explain why γ tends to nucleate in the inter or inner dendrite during solidification.…”

Section: Layer Positionmentioning

confidence: 83%

Multi-Phase Field Method for Solidification Microstructure Evolution for a Ni-Based Alloy in Wire Arc Additive Manufacturing

Nomoto

Kusano

Kitano

et al. 2022

Metals

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Wire arc additive manufacturing achieves high efficiency and low costs by using a melting wire for directional depositions. Thermal analyses and the finite element method have been applied to predict residual stress and the deformation of fabricated parts. For Ni-based alloy production, a method for predicting solidification microstructure evolution with segregation is needed in order to design precise heat treatment procedures. In this study, a multi-phase field method coupled with a CALPHAD database is developed to simulate the solidification microstructure evolution of a practical Ni-based alloy. Thermal analyses of a wire arc additive manufacturing model were performed by the process modeling of multi-pass depositions with a running cyclic arc. Solidification microstructure evolution was obtained using the temperature profile in each deposited layer by the multi-phase field method. These predicted microstructures are compared with experimental measurements. It is confirmed that the multi-phase field method coupled with the CALPHAD database is effective for predicting solidification microstructure and segregation in the engineering of Ni-based alloys.

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Section: Layer Positionmentioning

confidence: 83%

Multi-Phase Field Method for Solidification Microstructure Evolution for a Ni-Based Alloy in Wire Arc Additive Manufacturing

Nomoto

Kusano

Kitano

et al. 2022

Metals

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“…It plays a vital role in defining the creep properties of Haynes 282 [1] while also influencing the phase stability of Ni-based superalloys, i.e., leading to µ phase formation [22]. Because both Al and Ti mainly enrich the gamma L1 2 -Ni 3 (Al, Ti) phase in Ni-based superalloys [23] and occupy similar positions in its crystal structure [17], the concentration of Al was set as a sum of Al and Ti fractions in the Haynes 282 alloy. Other elements present in the reference alloy (e.g., Co, Fe, Mn) were entirely replaced by Ni.…”

Section: Methodsmentioning

confidence: 99%

Effect of the Addition of Re on the Microstructure and Phase Composition of Haynes 282: Ab Initio Modelling and Experi-Mental Investigation of Additively Manufactured Specimens

Wadowski¹,

Wróbel²,

Koralnik³

et al. 2023

Preprint

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Interactions in multicomponent Ni-Cr-Mo-Al-Re model alloy were determined by ab initio calculations in order to investigate the Re doping effect on Haynes 282 alloy. Simulation results provided an understanding of short-range interactions in the alloy and successfully pre-dicted the formation of a Cr and Re-rich phase. The Haynes 282 + 3 % wt. Re alloy was manu-factured using the additive manufacturing Direct Metal Laser Sintering (DMLS) technique, in which the presence of the (Cr17Re6)C6 carbide was confirmed by an XRD study. The results ob-tained provide useful information about the interactions between Ni, Cr, Mo, Al, and Re as a function of temperature. The 5-element model designed can lead to a better understanding of phenomena that occur during the manufacturing or heat treatment of modern, complex, multi-component Ni-based superalloys.

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“…It plays a vital role in defining the creep properties of Haynes 282 [ 1 ] while also influencing the phase stability of Ni-based superalloys, i.e., leading to μ phase formation [ 22 ]. Because both Al and Ti mainly enrich the gamma L1 2 -Ni 3 (Al, Ti) phase in Ni-based superalloys [ 23 ] and occupy similar positions in its crystal structure [ 17 ], the concentration of Al was set as a sum of Al and Ti fractions in the Haynes 282 alloy. Other elements present in the reference alloy (e.g., Co, Fe, Mn) were entirely replaced by Ni.…”

Section: Methodsmentioning

confidence: 99%

Effect of the Addition of Re on the Microstructure and Phase Composition of Haynes 282: Ab Initio Modelling and Experimental Investigation of Additively Manufactured Specimens

et al. 2023

View full text Add to dashboard Cite

Interactions in a multicomponent Ni-Cr-Mo-Al-Re model alloy were determined by ab initio calculations in order to investigate the Re doping effect on Haynes 282 alloys. Simulation results provided an understanding of short-range interactions in the alloy and successfully predicted the formation of a Cr and Re-rich phase. The Haynes 282 + 3 wt% Re alloy was manufactured using the additive manufacturing direct metal laser sintering (DMLS) technique, in which the presence of the (Cr17Re6)C6 carbide was confirmed by an XRD study. The results provide useful information about the interactions between Ni, Cr, Mo, Al, and Re as a function of temperature. The designed five-element model can lead to a better understanding of phenomena that occur during the manufacture or heat treatment of modern, complex, multicomponent Ni-based superalloys.

show abstract

Effect of Ti and Al on microstructure and partitioning behavior of alloying elements in Ni-based powder metallurgy superalloys

Cited by 15 publications

References 11 publications

Multi-Phase Field Method for Solidification Microstructure Evolution for a Ni-Based Alloy in Wire Arc Additive Manufacturing

Multi-Phase Field Method for Solidification Microstructure Evolution for a Ni-Based Alloy in Wire Arc Additive Manufacturing

Effect of the Addition of Re on the Microstructure and Phase Composition of Haynes 282: Ab Initio Modelling and Experi-Mental Investigation of Additively Manufactured Specimens

Effect of the Addition of Re on the Microstructure and Phase Composition of Haynes 282: Ab Initio Modelling and Experimental Investigation of Additively Manufactured Specimens

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