Precipitation-strengthened refractory Al 0.5 CrNbTi 2 V 0.5 high entropy alloy

Stepanov, Nikita; Yurchenko, N.; Panina, E.; Tikhonovsky, М.А.; Zherebtsov, Sergey

doi:10.1016/j.matlet.2016.11.030

Cited by 103 publications

(40 citation statements)

References 15 publications

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“…However, the density of these HEAs (> 10 g/cm 3 ) is noticeably higher than that of commercial superalloys. The necessity to decrease the density of these alloys served as a trigger for the developing new light-weight refractory HEAs [6][7][8][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Structure and mechanical properties of B2 ordered refractory AlNbTiVZrx (x = 0–1.5) high-entropy alloys

Yurchenko

Stepanov

Zherebtsov

et al. 2017

Materials Science and Engineering: A

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Structure and mechanical properties of the AlNbTiVZr x (x = 0; 0.1; 0.25; 0.5; 1; 1.5) refractory high-entropy alloys were investigated after arc melting and annealing at 1200°C for 24 h. The AlNbTiV alloy had a B2 ordered single phase structure. Alloying with Zr resulted in (i) change of the degree of order of the B2 phase; and (ii) precipitation of the Zr 5 Al 3 and C14 Laves ZrAlV phases. The density of the AlNbTiVZr x alloys varied from 5590 kg m −3 for the AlNbTiV alloy to 5870 kg m −3 for the AlNbTiVZr 1.5 alloy. The compression yield strength at 22°C increased with an increase in the Zr content from 1000 MPa for the AlNbTiV alloy to 1535 MPa for the AlNbTiVZr 1.5 alloy. The plasticity raised from 6% for the AlNbTiV alloy to > 50% for the AlNbTiVZr 0.5 alloy and then dropped to 0.4% for the AlNbTiVZr 1.5 alloy. At 600°C, the strongest alloy was also the AlNbTiVZr 1.5 , whereas, at 800°C, the AlNbTiVZr 0.1 alloy demonstrated the maximum strength. The plasticity of the AlNbTiV alloy at 600°C increased up to 14.3%, while the Zr-containing alloys had lower plasticity. At 800°C, all the AlNbTiVZr x alloys could be plastically deformed up to 50% of strain without fracture. Ordering in the alloys and the reasons of a complicated dependence of mechanical properties of the AlNbTiVZr x alloys on the Zr content and temperature were discussed.

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Section: Introductionmentioning

confidence: 99%

Structure and mechanical properties of B2 ordered refractory AlNbTiVZrx (x = 0–1.5) high-entropy alloys

Yurchenko

Stepanov

Zherebtsov

et al. 2017

Materials Science and Engineering: A

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215

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“…will be introduced during the preparing process, which will lead to the formation of precipitated phases [4,8,9]. In fact, several recent studies have revealed that in many cases, dual-phase microstructures can be observed in some HEAs [10,11] and the second phase significantly enhances the strength of HEAs by precipitation strengthening [12,13,14,15,16,17]. Therefore, the precipitated phase, caused by introduction of interstitial elements, may benefit the mechanical properties of HEAs in some cases.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Strength of a Mechanical Alloyed NbMoTaWVTi Refractory High Entropy Alloy

Long

Zhang

et al. 2018

Materials

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A NbMoTaWVTi refractory high entropy alloy (HEA) has been successfully synthesized by mechanical alloying (MA) and spark plasma sintering (SPS). The microstructure and mechanical properties of this alloy are investigated. It is observed that only two types of body-centered cubic (BCC) solid solutions are formed in the powders after ball milling for 40 h. However, a new face-centered cubic (FCC) precipitated phase is observed in the BCC matrix of bulk material consolidated by SPS. The FCC precipitated phase is identified as TiO, due to the introduction of O during the preparing process of HEA. The compressive yield strength, fracture strength, and total fracture strain of the consolidated bulk HEA are 2709 MPa, 3115 MPa, and 11.4%, respectively. The excellent mechanical properties can be attributed to solid solution strengthening and grain boundary strengthening of the fine-grained BCC matrix, as well as the precipitation strengthening owing to the formation of TiO particles.

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“…Table 1 of the data sheet illustrates the collected data from published studies so far [3] , [4] , [5] , [6] , [7] , [8] , [9] , [10] , [11] , [12] , [13] , [14] , [15] , [16] , [17] , [18] , [19] , [20] , [21] , [22] , [23] , [24] , [25] , [26] , [27] , [28] , [29] , [30] , [31] , [32] , [33] , [34] , [35] , [36] , [37] , [38] , [39] , [40] , [41] , [42] , [43] , [44] , [45] , [46] , [47] , [48] , [49] , [50] , [51] , [52] , [53] , [54] , [55] , [56] , for all the RHEAs / RCCAs: the alloy composition . Alloying elements are classified by alphabetic order and the subscripts indicate atom mole fraction.…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Comprehensive data compilation on the mechanical properties of refractory high-entropy alloys

et al. 2018

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This data article presents the compilation of mechanical properties for 122 refractory high entropy alloys (RHEAs) and refractory complex concentrated alloys (RCCAs) reported in the period from 2010 to the end of January 2018. The data sheet gives alloy composition, type of microstructures and the metallurgical states in which the properties are measured. Data such as the computed alloy mass density, the type of mechanical loadings to which they are subjected and the corresponding macroscopic mechanical properties, such as the yield stress, are made available as a function of the testing temperature. For practical use, the data are tabulated and some are also graphically presented, allowing at a glance to access relevant information for this attractive category of RHEAs and RCCAs.

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Precipitation-strengthened refractory Al 0.5 CrNbTi 2 V 0.5 high entropy alloy

Cited by 103 publications

References 15 publications

Structure and mechanical properties of B2 ordered refractory AlNbTiVZrx (x = 0–1.5) high-entropy alloys

Structure and mechanical properties of B2 ordered refractory AlNbTiVZrx (x = 0–1.5) high-entropy alloys

Enhanced Strength of a Mechanical Alloyed NbMoTaWVTi Refractory High Entropy Alloy

Comprehensive data compilation on the mechanical properties of refractory high-entropy alloys

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