Structural changes and properties of molybdenum upon cold and cryogenic deformation under pressure

被引：6

作者：

Gapontseva T.M. ^{[1
]}

Pilyugin V.P. ^{[1
]}

Degtyarev M.V. ^{[1
]}

Voronova L.M. ^{[1
]}

Chashchukhina T.I. ^{[1
]}

Patselov A.M. ^{[1
]}

机构：

[1] Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, Yekaterinburg

来源：

Russian Metallurgy (Metally) | 2014年 / 2014卷 / 10期

基金：

俄罗斯基础研究基金会;

关键词：

Crystal orientation - Dislocations (crystals) - Strain - Molybdenum - Cryogenics - Deformation - Torsional stress;

D O I：

10.1134/S0036029514100024

中图分类号：

学科分类号：

摘要：

The structure and hardness of a molybdenum single crystal with an (110) orientation, which was deformed by high pressure torsion at 290 and 80 K, are investigated. Such deformation mechanism as dislocation slip that is characteristic of materials with a high stacking fault energy works also during cryogenic deformation: twinning does not occur. At both temperatures, the single crystal transforms into a polycrystalline state at a true strain e ≈ 2. Up to the maximum achievable true strains, no uniform-in-size submicrocrystalline structure forms in molybdenum. © 2014, Pleiades Publishing, Ltd.

引用

页码：812 / 816

页数：4

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