Influence of ultrafine-grained structure of Ti-42Nb-7Zr alloy on energy dissipation and storage under quasi-static tension

被引：0

作者：

Legostaeva, E. V. ^{[1
]}

Eroshenko, A. Yu. ^{[1
]}

Vavilov, V. P. ^{[2
]}

Skripnyak, V. A. ^{[3
]}

Uvarkin, P. V. ^{[1
]}

Tolmachev, A. I. ^{[1
]}

Bataev, V. A. ^{[4
]}

Chulkov, A. O. ^{[2
]}

Kozulin, A. A. ^{[3
]}

Skripnyak, V. V. ^{[3
]}

Sharkeev, Yu. P. ^{[1
,2
]}

机构：

[1] Inst Strength Phys & Mat Sci SB RAS, Tomsk 634055, Russia

[2] Natl Res Tomsk Polytech Univ, Tomsk 634050, Russia

[3] Natl Res Tomsk State Univ, Tomsk 634050, Russia

[4] Novosibirsk State Tech Univ, Novosibirsk 630073, Russia

来源：

MATERIALS LETTERS | 2024年 / 375卷

关键词：

Ultrafine-grained alloy; Severe plastic deformation; Microstructure; Tensile test; Infrared thermography; Energy dissipation and storage;

D O I：

10.1016/j.matlet.2024.137241

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The ultrafine-grained (UFG) structure and plastic deformation of the Ti-42Nb-7Zr alloy have been investigated using infrared thermography. The initial stage occurs at a constant temperature when the total energy of plastic strain absorbed by the alloy is 1.75 times higher for the UFG alloy, than for the alloy with a coarse-grained structure. This fact is due to substructural strengthening caused by severe plastic deformation and dispersion hardening with omega-phase nanoparticles. The amount of heat released before the UFG alloy fracture is 2 times larger than the amount of stored energy, and this results in localized softening of the UFG alloy prior to its fracture.

引用

页数：4

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