Balancing the fracture toughness and tensile strength by multiple additions of Zr and Y in Nb–Si based alloys

Sun, Guangxin; Ye, Chengtong; Jin, Zuheng; Wang, Yu; Li, Hang; Zhang, Hu

doi:10.1016/j.intermet.2021.107172

Cited by 37 publications

(4 citation statements)

References 39 publications

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“…Table 5. Thermodynamic data of the materials in reactions ( 6) and (7). The molar heat capacity C P of the various substances at 1000-1600 K are shown in Figure 7.…”

Section: Positionmentioning

confidence: 99%

“…This proves that reactions ( 6) and ( 7 5. Thermodynamic data of the materials in reactions ( 6) and (7).…”

Section: Positionmentioning

confidence: 99%

“…The Nb 5 Si 3 intermetallic compound has been considered as a potential material for high-performance structural application due to its high melting point (2520 • C), low density (7.1 g/cm 3 ), and excellent strength retention at elevated temperatures [1][2][3]. However, due to the relatively low fracture toughness of 1-3 MPa•m 1/2 at ambient temperatures [4], a ductile niobium-based solid solution (Nb ss ) was brought into Nb 5 Si 3 to achieve a balance of low fracture toughness and high temperature strength [5][6][7][8][9][10][11][12]. As for the as-cast Nb-Si alloy, with the increase in Si content, the volume fraction of ductile Nb ss phase decreased, thereby significantly lowering the fracture toughness [13,14].…”

Section: Introductionmentioning

confidence: 99%

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Effect of C Addition on the Microstructure and Fracture Properties of In Situ Laminated Nb/Nb5Si3 Composites

Zeng

Xiao

et al. 2023

Materials

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//Nbss and α-Nb5Si3 phases were detected. Meanwhile, Nb2C was observed, and the crystal forms of Nb5Si3 changed in the C-doped composites. Furthermore, micron-sized and nano-sized Nb2C particles were found in the Nbss layer. The orientation relationship of Nb2C phase and the surrounding Nbss was [001]Nbss//[010]Nb2C, (200) Nbss//(101) Nb2C. Additionally, with the addition of C, the compressive strength of the composites, at 1400 °C, and the fracture toughness increased from 310 MPa and 11.9 MPa·m1/2 to 330 MPa and 14.2 MPa·m1/2, respectively; the addition of C mainly resulted in solid solution strengthening.

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“…Table 5. Thermodynamic data of the materials in reactions ( 6) and (7). The molar heat capacity C P of the various substances at 1000-1600 K are shown in Figure 7.…”

Section: Positionmentioning

confidence: 99%

“…This proves that reactions ( 6) and ( 7 5. Thermodynamic data of the materials in reactions ( 6) and (7).…”

Section: Positionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of C Addition on the Microstructure and Fracture Properties of In Situ Laminated Nb/Nb5Si3 Composites

Zeng

Xiao

et al. 2023

Materials

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“…Of particular interest could be an investigation focused on the properties of a coating in which the layers with great hardness and wear resistance (for example, the layers based on the (Ti,Al)N system) would be alternated with the layers with good barrier properties combined with high fracture toughness (for example, the layers based on YN). It has been established that yttrium and yttrium nitride increase the fracture toughness when they are introduced into the composition of alloys and nitride phases [40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Properties of Multilayer Nanostructured Coating Based on the (Ti,Y,Al)N System with High Content of Yttrium

et al. 2023

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The studies are focused on the properties of the multilayer composite coating based on the (Ti,Y,Al)N system with high content of yttrium (about 40 at.%) of yttrium (Y). The hardness and elastic modulus were defined, and the resistance to fracture was studied during the scratch testing. Two cubic solid solutions (fcc phases), including c-(Ti,Y,Al)N and c-(Y,Ti,Al)N, are formed in the coating. The investigation of the wear resistance of the (Ti,Y,Al)N-coated tools during the turning of steel in comparison with the wear resistance of the tools with the based on the (Ti,Cr,Al)N system coating and the uncoated tools found a noticeable increase (by 250%–270%) in rake wear resistance. Active oxidation processes are observed in the (Ti,Y,Al)N coating during wear. It can be assumed that yttrium oxide is predominantly formed with a possible insignificant formation of titanium and aluminum oxides. At the same time, complete oxidation of c-(Y,Ti,Al)N nanolayers is not observed. Some hypotheses explaining the rather high performance of a coating with a high yttrium content are considered.

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Effect of Ni on Microstructures and Mechanical Properties for Multielemental Nb–Si-Based Alloys

Chen

Wang

Chen

et al. 2022

Metall Mater Trans A

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Balancing the fracture toughness and tensile strength by multiple additions of Zr and Y in Nb–Si based alloys

Cited by 37 publications

References 39 publications

Effect of C Addition on the Microstructure and Fracture Properties of In Situ Laminated Nb/Nb5Si3 Composites

Effect of C Addition on the Microstructure and Fracture Properties of In Situ Laminated Nb/Nb5Si3 Composites

Investigation of the Properties of Multilayer Nanostructured Coating Based on the (Ti,Y,Al)N System with High Content of Yttrium

Effect of Ni on Microstructures and Mechanical Properties for Multielemental Nb–Si-Based Alloys

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