Mechanical properties of tantalum with different types of microstructure under high-rate deformation

Aniskin, M.V.; Ignatova, O. N.; Kaganova, I. I.; Кальманов, А В; Koshatova, E.; Lebedev, A. I.; Losev, V. V.; Podurets, A. M.; Polyakov, L. V.; Tkachenko, M. I.; Tsibikov, A. N.; Salischev, G.; Garkushin, G. V.; Разоренов, С. В.; Zocher, M. A.

doi:10.1016/j.physme.2011.04.010

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…The SMC V95 alloy has the highest value of Y, whereas the SMC A7 aluminum has the lowest one. It should be noted that changes in the dynamic yield stress are pro portional to the increase in hardness, which has been repeatedly noted in similar experiments with fcc (Cu, aluminum alloy D16) [15,16] and bcc (Ta) [17] met als. Based on the data listed in Table 2, we can analyze the effect of grain size on the hardness and dynamic yield strength of aluminum and alloys.…”

Section: Discussionsupporting

confidence: 60%

“…This distinguishes their behaviors from those of SMC materials produced by quasi static MPD techniques. For example, after multilateral forging, the dynamic elastic limit of SMC tantalum decreases by 35% com pared with σ HEL of CG tantalum [17]. SMC alumi num alloy 1421 prepared by ECAP and SMC titanium produced by multilateral forging exhibit a slight decrease in the dynamic yield stress [4].…”

Section: Discussionmentioning

confidence: 99%

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Resistance of submicrocrystalline aluminum alloys to high-rate deformation and fracture after dynamic channel angular pressing

Бродова

Петрова

Разоренов

et al. 2015

Phys. Metals Metallogr.

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A comparative study of the deformation behavior of submicrocrystalline (formed by dynamic channel angular pressing) and coarse grained commercial aluminum alloys (AMts and V95), and commer cial aluminum A7 has been performed under impact compression conditions. Dynamic elastic limit (Hugo niot elastic limit) σ HEL , yield strength Y, and spall strength σ sp at a deformation rate of (1.2-3) × 10 5 s -1 were determined by analyzing the experimental velocity profiles of the free surface of samples. It has been found that the dynamic elastic limit and yield strength increase after all the materials studied have transformed into a submicrocrystalline state (crystallite size of 200-700 nm). Submicrocrystalline alloy V95 has the highest value of Y and submicrocrystalline aluminum A7 has the lowest one. The effect of grain size on spall strength is ambiguous. The values of σ sp for submicrocrystalline alloys are 1.32-1.36 GPa. The submicrocrystalline V95 alloy and commercial A7 aluminum demonstrate a decrease in the spall strength, whereas the spall strength of the alloy AMts slightly increases with decreasing grain size.

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Section: Discussionsupporting

confidence: 60%

Section: Discussionmentioning

confidence: 99%

Resistance of submicrocrystalline aluminum alloys to high-rate deformation and fracture after dynamic channel angular pressing

Бродова

Петрова

Разоренов

et al. 2015

Phys. Metals Metallogr.

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“…Gray and Vecchio [7] identified limited twinning in unalloyed tantalum and Ta-10 W alloy shocked to 20 GPa by plate impact. Aniskin et al [8] recently reported twin statistics in coarse-grained high-purity tantalum also subjected to plane-wave shock loading, with greater twin fractions corresponding to lower temperature and longer duration times.…”

Section: Introductionmentioning

confidence: 99%

Deformation twinning in explosively-driven tantalum

Livescu

Bingert

Mason

2012

Materials Science and Engineering: A

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“…The diffusion specimens were assembled into a pure Mo fixture, as shown in Figure 1c. Before assembling, a force of 7 kN was loaded onto the specimens to maintain a slight plastic deformation of Ta, of which the yield strength was 320 MPa [26], to ensure a tight contact between those two diffusion specimens. Cubic boron nitride powders were dispersed onto the surface of each connecting part to facilitate the demolding.…”

Section: Methodsmentioning

confidence: 99%

Relationship between the Composition and Elastic Modulus of TiZrTa Alloys for Implant Materials

Zhao¹,

Liu

Ding

et al. 2022

Metals

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The elastic modulus is a key factor influencing the applications of implant materials because of the weakening effect of stress shielding. Ti and its alloys are good potential implant materials thanks to their low elastic modulus and fine biocompatibility. The addition of alloying elements into pure Ti and Ti alloys is the basic way to further decrease the elastic modulus whilst simultaneously enhancing strength, wearability, and corrosion resistance, for example. Finding the relationship between the composition and elastic modulus can greatly promote the development of Ti alloys with a low modulus for implant applications. In the current work, we investigated the elastic modulus of TiZrTa alloys with scores of compositions by using the high-throughput diffusion couple method, nanoindentation, and an electron probe micro-analysis. The relationship between the elastic modulus and the composition of the TiZrTa alloys was obtained. The average valence electron theory was employed to make clear the variation between the elastic modulus and the composition. Finally, the composition range formulae of TiZrTa alloys likely to have a low modulus were established by combining our data and previous results. These findings are helpful in developing new Ti alloys with a low modulus and also help to further understand the alloying theory.

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Mechanical properties of tantalum with different types of microstructure under high-rate deformation

Cited by 7 publications

References 6 publications

Resistance of submicrocrystalline aluminum alloys to high-rate deformation and fracture after dynamic channel angular pressing

Resistance of submicrocrystalline aluminum alloys to high-rate deformation and fracture after dynamic channel angular pressing

Deformation twinning in explosively-driven tantalum

Relationship between the Composition and Elastic Modulus of TiZrTa Alloys for Implant Materials

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