Influence of aging and HIP treatment on the structure and properties of NiAl-based turbine blades manufactured by laser powder bed fusion

Kaplanskii, Yu. Yu.; Левашов, Е. А.; Korotitskiy, Andrey; Логинов, П.А.; Sentyurina, Zh. A.; Mazalov, Alexey

doi:10.1016/j.addma.2019.100999

Cited by 18 publications

(17 citation statements)

References 34 publications

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“…The relatively slow cooling down of the ingots in air contributed to additional precipitation of nanosized (<100 nm) particles of the excessive phase (composition: Cr, 65.92 at.%; Mo, 25.39 at.%; Ni, 5.62 at.%; and Al, 2.07 at.%) in the dendrite bodies. These precipitates increased the resistance to plastic deformation due to dispersion strengthening of the NiAl matrix as previously demonstrated in references [31,36,50,51]. Submicron-sized NiAl precipitates are observed after annealing 1150 • C (Figure 16a).…”

Section: Resultssupporting

confidence: 75%

“…The increase in the unit cell parameter of the matrix phase was presumably caused by dissolution of molybdenum, chromium, and cobalt atoms in this phase as proved by the results of EDXS analysis of the The BF TEM image of the structure of the annealed NiAl-15Mo-1 taken along the [1 11] (Ni,Co,Cr)3Mo3C zone axis is shown in Figure 18a. An diffusion-controlled growth of strengthening Cr(Mo) nanoprecipitates a grain boundaries up to the submicron size (150-400 nm) and increased cobalt concentrations in the (Ni,Co,Cr)3Mo3C phase (Table 11, spectrum 6 references [24,26,31,44], precipitation of dispersed particles of the excessiv took place at the stage when the ingots were cooled down in the vacuum electric furnace as a result of concentration stratification of supersaturated Cr(Mo) in the intermetallic matrix. Changes in the composition of interden ers are caused by its diffusion saturation with doping elements as dispe (Cr,Mo) are dissolved in β-NiAl during the heat treatment of the alloy.…”

Section: Resultsmentioning

confidence: 99%

“…The use of spheroidized powders made of this alloy has allowed one to fabricate defectfree near net-shaped products (a turbine rotor blade) by SLM coupled with HIP [31,32]. The effect of post-treatment regimes on the structure and thermomechanical behavior was studied.…”

Section: Introductionmentioning

confidence: 99%

“…High-temperature creep tests revealed that the working temperature increased by 80-85 • C and the creep activation energy was elevated due to HIP treatment of the as-SLM products. Therefore, HIP (and lowtemperature aging in some cases) are important operations for the SLM products made of NiAl-based alloys [26,27,31,32].…”

Section: Introductionmentioning

confidence: 99%

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Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–X (X = La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing

et al. 2021

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The NiAl–Cr–Co–X alloys were produced by centrifugal self-propagating high-temperature synthesis (SHS) casting. The effects of dopants X = La, Mo, Zr, Ta, and Re on combustion, as well as the phase composition, structure, and properties of the resulting cast alloys, have been studied. The greatest improvement in overall properties was achieved when the alloys were co-doped with 15% Mo and 1.5% Re. By forming a ductile matrix, molybdenum enhanced strength characteristics up to the values σucs = 1604 ± 80 MPa, σys = 1520 ± 80 MPa, and εpd = 0.79%, while annealing at T = 1250 ℃ and t = 180 min improved strength characteristics to the following level: σucs = 1800 ± 80 MPa, σys = 1670 ± 80 MPa, and εpd = 1.58%. Rhenium modified the structure of the alloy and further improved its properties. The mechanical properties of the NiAl, ZrNi5, Ni0.92Ta0.08, (Al,Ta)Ni3, and Al(Re,Ni)3 phases were determined by nanoindentation. The three-level hierarchical structure of the NiAl–Cr–Co+15%Mo alloy was identified. The optimal plasma treatment regime was identified, and narrow-fraction powders (fraction 8–27 µm) characterized by 95% degree of spheroidization and the content of nanosized fraction <5% were obtained.

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Section: Resultssupporting

confidence: 75%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–X (X = La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing

et al. 2021

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“…However, AM processes used for gas turbine applications are mostly metal processes and comes with its own set of challenges such as toxicity of metal powders, powder handling challenges, size limitations, higher cost, microstructure, surface roughness issues and post processing requirements to name a few. Kaplanskii et al [43] presented a post print treatment to enhance the life of gas-turbine rotor blades. They observed that Laser Powder Bed Fusion (LPBF) printing followed by Hot Isostatic Pressing (HIP) reduced the metal porosity, improved microstructure of the printed material, and improved thermo-mechanical properties of the finished product.…”

Section: Am For Gas Steam and Combined Cycle Applicationsmentioning

confidence: 99%

Engineering and Economic Aspects of Additive Manufacturing in Energy Related Industries

Dutta¹,

DasGupta²,

Chimata³

2020

Preprint

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Additive manufacturing is the buzz word these days and many companies are leaning on this technology to leap forward in un-chartered design space that promises to give better performance at impossible to reach design goals with the current manufacturing methods. This paper addresses recent developments that have occurred in Energy related businesses with the adoption of 3D printing, also known as Additive Manufacturing (AM). It covers what and why of additive manufacturing; what constitutes energy and AM industry; current activities in AM for energy; AM for different energy sectors; AM processes; AM applications; selected patents in additive manufacturing associated with energy applications; and economic and financial aspects of AM in energy related industries. In this review paper it was noted that in-spite of phenomenal growth in AM, it seldom replaces traditional production methods due to associated constraints. Many companies are finding complimentary AM processes along with subtractive manufacturing techniques to meet the market demands. However, AM is particularly advantageous and attractive compared to traditional manufacturing methods for low volume complex geometry parts.

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Heat‐Resistant Intermetallic Compounds and Ceramic Dispersion Alloys for Additive Manufacturing: A Review

Yakubov

Kruzic

2022

Adv Eng Mater

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Many industries such as aerospace, power generation, and ground transportation demand structural materials with high specific strength at elevated temperatures. Up until now, many types of heat‐resistant materials including Ni‐based superalloys, intermetallic compounds, and dispersion‐strengthened alloys have been developed for specific applications in these industries. Moreover, with the recent development of additive manufacturing techniques, these industries can now benefit from the rapid prototyping abilities, geometric freedom, and increased mechanical properties that can be achieved through various additive manufacturing processes. With this in mind, the progress made in additive manufacturing of heat‐resistant intermetallic compounds and ceramic dispersion alloys is herein examined. A brief introduction is provided on the target industries, applications, and the compositions of heat‐resistant alloys of current research interest. Then, recent research on heat‐resistant intermetallic compounds and ceramic dispersion alloys fabricated by additive manufacturing processes such as laser powder bed fusion, laser direct energy deposition, and electron‐beam powder bed fusion are reviewed with information provided on microstructure, processing parameters, strengthening mechanisms, and mechanical properties. Finally, an outlook is provided with future research suggestions.

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Influence of aging and HIP treatment on the structure and properties of NiAl-based turbine blades manufactured by laser powder bed fusion

Cited by 18 publications

References 34 publications

Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–X (X = La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing

Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–X (X = La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing

Engineering and Economic Aspects of Additive Manufacturing in Energy Related Industries

Heat‐Resistant Intermetallic Compounds and Ceramic Dispersion Alloys for Additive Manufacturing: A Review

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