Microstructure characteristics of a René N5 Ni-based single-crystal superalloy prepared by laser-directed energy deposition

Wang, Rui; WANG, Jiang; Cao, Tingwei; Zhao, Ruixin; Lu, Xufei; GUAN, Wei; Hu, Tao; Shuai, Sansan; Xu, Songzhe; Wang, Xuan; Panwisawas, Chinnapat; Chen, Chaoyue; Ren, Zhuoxiang

doi:10.1016/j.addma.2022.103363

Cited by 15 publications

(3 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 4 demonstrates the effect of solute trapping on the solidification behaviours and crack susceptibility. Solid-state crack could be attributed to the local stress change induced by the precipitation of γ′ phase 19 , 42 , and the uneven distribution of γ′ forming elements can also leads to the heterogeneity of precipitation size and mechanical properties 43 . Figure 4a shows the SI distribution of γ′ forming elements (including Al, Ta, and Ti) 44 in CM247LC in the heat affected zone, which is defined as the region between the isotherm of 1144K 19 and the iso-surface of f s = 1.…”

Section: Discussionmentioning

confidence: 99%

“…It has been revealed that intrinsic heat treatment caused by cyclic re-heating in AM is possible to promote precipitation in HAZ 19 , 42 . Solute-enrichment of γ′ forming elements is considered to be responsible for the large γ′ precipitates of poor ductility formed in the interdendritic (intercellular) regions 43 . Among the γ′ forming elements in CM247LC, Al is less segregated and the amount of Ti is rather little, so Ta dominates the local composition deviation (the difference from the nominal one, indicated by the grey plane), as shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Solute segregation becomes more severe from bottom to top, corresponding to the microstructural evolution from solute trapping region and ultra-fine cells to coarse cells. Higher solute segregation enlarges the difference of solidus temperature between cellular trunks and intercellular regions, and leads to the more nonuniform mechanical properties due to the differently sized γ′ precipitation phase 43 , 45 . In this case, the solute trapping behaviours can bring rather different aspects.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Solute trapping and non-equilibrium microstructure during rapid solidification of additive manufacturing

Ren,

Li,

Zhang

et al. 2023

Nat Commun

View full text Add to dashboard Cite

Solute transport during rapid and repeated thermal cycle in additive manufacturing (AM) leading to non-equilibrium, non-uniform microstructure remains to be studied. Here, a fully-coupled fluid dynamics and microstructure modelling is developed to rationalise the dynamic solute transport process and elemental segregation in AM, and to gain better understanding of non-equilibrium nature of intercellular solute segregation and cellular structures at sub-grain scale during the melting-solidification of the laser powder bed fusion process. It reveals the solute transport induced by melt convection dilutes the partitioned solute at the solidification front and promotes solute trapping, and elucidates the mechanisms of the subsequent microstructural morphology transitions to ultra-fine cells and then to coarse cells. These suggest solute trapping effect could be made used for reducing crack susceptibility by accelerating the solidification process. The rapid solidification characteristics exhibit promising potential of additive manufacturing for hard-to-print superalloys and aid in alloy design for better printability.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Solute trapping and non-equilibrium microstructure during rapid solidification of additive manufacturing

Ren,

Li,

Zhang

et al. 2023

Nat Commun

View full text Add to dashboard Cite

show abstract

A Review on Corrosion Behavior and Surface Modification Technology of Nickel Aluminum Bronze Alloys: Current Research and Prospects

Wang,

Liu,

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

Nickel aluminum bronze alloy, a complex alloy containing multiple phases, has become the most common material for naval propellers due to its good corrosion resistance. Traditional cast nickel aluminum bronze shows serious corrosion behavior in harsh service environments. This article reviews progress on the corrosion behaviors and corrosion mechanism of nickel aluminum bronze in highly corrosive and complex marine environments and systematically discusses the research status of the surface modification technologies such as laser surface strengthening, mechanical shot peening, friction stir and thermal spraying, and so on. To improve the comprehensive performance of nickel aluminum bronze, this work focuses on analyzing the effect of process parameters on the corrosion resistance of nickel aluminum bronze alloy while researching propeller blade surface modification technology. Finally, the future research and development direction of nickel aluminum bronze in the fields of laser and arc additive manufacturing is prospected.

show abstract

Microstructures and mechanical properties of laser-directed energy deposited CrCoNi medium-entropy alloy

Zhao,

Liu,

Che

et al. 2024

Rare Met.

View full text Add to dashboard Cite

Microstructure characteristics of a René N5 Ni-based single-crystal superalloy prepared by laser-directed energy deposition

Cited by 15 publications

References 52 publications

Solute trapping and non-equilibrium microstructure during rapid solidification of additive manufacturing

Solute trapping and non-equilibrium microstructure during rapid solidification of additive manufacturing

A Review on Corrosion Behavior and Surface Modification Technology of Nickel Aluminum Bronze Alloys: Current Research and Prospects

Microstructures and mechanical properties of laser-directed energy deposited CrCoNi medium-entropy alloy

Contact Info

Product

Resources

About