Structure and properties of NiAl-Cr(Co,Hf) alloys prepared by centrifugal SHS casting. Part 1 – Room temperature investigations

Зайцев, А. А.; Sentyurina, Zh. A.; Левашов, Е. А.; Pogozhev, Yu. S.; Санин, В. Н.; Логинов, П.А.; Петржик, М. И.

doi:10.1016/j.msea.2016.09.075

Cited by 33 publications

(20 citation statements)

References 44 publications

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“…In order to improve mechanical properties of NiAl, lots of methods have been applied and so many NiAl based materials have been designed and fabricated [15][16][17][18]. Yang et al [19] fabricated the NiAl/Cr(Mo) eutectic alloy and investigated its deformation mechanism which indicates the appropriate Cr(Mo) and NiAl lamellar structure was beneficial to mechanical properties.…”

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confidence: 99%

Optimization of the Microstructure and Mechanical Properties of a Laves Phase-Strengthened Hypoeutectic NiAl/Cr(Mo,W) Alloy by Suction Casting

Sheng

Zan

et al. 2018

Strength Mater

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Êëþ÷îâ³ ñëîâà: ëèòòÿ ìåòîäîì âàêóóìíîãî âñìîêòóâàííÿ, ôàçà Ëàâåñà, ì³êðîñòðóêòóðà, äîåâòåêòè÷íèé ñïëàâ NiAl/Cr(Mo,W), ìåõàí³÷í³ âëàñòèâîñò³. Introduction.Recently, Ni-based intermetallic compounds have been paid much attention, due to its high melting point, special interfacial chemical properties, and good environment tolerance [1][2][3]. As a kind of intermetallic compound, NiAl owns many attractive advantages such as high melting point, excellent oxidation and corrosion resistance, relative low density, good thermal conductivity etc [4][5][6]. Therefore, it has been thought as the potential candidate for high temperature structure materials subjected to the severe oxidation and corrosion [7,8]. According to previous researches [9,10], NiAl has

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mentioning

confidence: 99%

Optimization of the Microstructure and Mechanical Properties of a Laves Phase-Strengthened Hypoeutectic NiAl/Cr(Mo,W) Alloy by Suction Casting

Sheng

Zan

et al. 2018

Strength Mater

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“…A comparative data analysis revealed no significant differences in the degree of phase separation of the synthesis products and dispersion of the mixture during synthesis of the samples with basic composition [24] and the compositions analyzed in this study. However, slight variation in combustion velocity (Uf) of the mixtures was detected.…”

Section: Resultsmentioning

confidence: 60%

“…The intergrain space of the Zr-doped alloy (Figure 6) was found to contain zone segregations of Ni5Zr. The characteristic size of the structural components and the principle of microstructure formation are similar to those for the developed Hf-doped CompoNiAl-M5-3 alloy [23][24][25][26]. It can be assumed that this microheterogeneous structure will not cause deterioration of mechanical properties.…”

Section: Resultsmentioning

confidence: 79%

“…Therefore, vacuum annealing usually favorably affects strength and ductility [49]. Heat treatment of the NiAl-Cr-Co-Hf alloy at T = 850 • C and p = 10 −2 Pa for 3 h simultaneously increased strength and ductility due to concentration stratification of the supersaturated chromium-based solid solution and precipitation of strengthening α-Cr nanoparticles (sized less than 45 nm) and the Heusler phase Ni 2 AlHf (3-5 nm) [24].…”

Section: Resultsmentioning

confidence: 99%

“…The second level is formed by strengthening submicron-sized α-Cr and Hf precipitates inside the NiAl grains. The third level is formed by subgrains with coherent α-Cr precipitates smaller than 45 nm and the Ni 2 AlHf Heusler phase (3-5 nm in size) [24,25].…”

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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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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Structure and properties of NiAl-Cr(Co,Hf) alloys prepared by centrifugal SHS casting. Part 1 – Room temperature investigations

Cited by 33 publications

References 44 publications

Optimization of the Microstructure and Mechanical Properties of a Laves Phase-Strengthened Hypoeutectic NiAl/Cr(Mo,W) Alloy by Suction Casting

Optimization of the Microstructure and Mechanical Properties of a Laves Phase-Strengthened Hypoeutectic NiAl/Cr(Mo,W) Alloy by Suction Casting

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

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

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