Fatigue strength of submicrocrystalline Ti and Zr-2.5%Nb alloy after equal channel angular pressing

被引：17

作者：

Terentyev, V. F. ^{[1
]}

Dobatkin, S. V. ^{[1
,2
]}

Nikulin, S. A. ^{[2
]}

Kopylov, V. I. ^{[3
]}

Prosvirnin, D. V. ^{[1
]}

Rogachev, S. O. ^{[2
]}

Bannykh, I. O. ^{[1
]}

机构：

[1] RAS, AA Baikov Inst Met & Mat Sci, Moscow 119991, Russia

[2] Natl Univ Sci & Technol MISIS, Moscow 119049, Russia

[3] NAS Belarus, Inst Physicotech, Minsk 220141, BELARUS

来源：

KOVOVE MATERIALY-METALLIC MATERIALS | 2011年 / 49卷 / 01期

关键词：

titanium; Zr-2.5%Nb zirconium alloy; severe plastic deformation; submicrocrystalline structure; fatigue strength; propagation of fatigue cracks; GRAIN; ZIRCONIUM; BEHAVIOR; KINETICS; ZR;

D O I：

10.4149/km_2011_1_65

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The static and fatigue strength properties of commercially pure VT1-00 (Russian standard) titanium and the Zr-2.5%Nb zirconium alloy have been studied after equal-channel angular pressing (ECAP). It is shown that the formation of submicrocrystalline (SMC) structure upon ECAP leads to significant strengthening, increases the service life in a high stress amplitude range and increases the fatigue strength relative to those typical of the annealed state. The specific features of the fatigue fracture mechanism in different structural states of materials are studied.

引用

页码：65 / 73

页数：9

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