Nanostructuring and Phase Transformations in the β-Alloy Ti-15Mo during High-Pressure Torsion

被引：19

作者：

Gatina, Svetlana ^{[1
]}

Semenova, Irina ^{[1
]}

Leuthold, Joern ^{[2
]}

Valiev, Ruslan ^{[1
,3
]}

机构：

[1] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa 450000, Russia

[2] Univ Munster, Inst Mat Phys, D-48149 Munster, Germany

[3] St Petersburg State Univ, Lab Mech Bulk Nanostruct Mat, St Petersburg 198504, Russia

来源：

ADVANCED ENGINEERING MATERIALS | 2015年 / 17卷 / 12期

关键词：

OMEGA-PHASE; MECHANICAL-PROPERTIES; YOUNGS MODULUS; SUPERELASTICITY; PRECIPITATION; SIZE;

D O I：

10.1002/adem.201500104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the processes of grain refinement and phase transformations in the Ti-15Mo beta-alloy during high-pressure torsion (HPT) at room temperature are investigated. The non-monotonic character of the variation of the omega-phase volume fraction has been demonstrated for an increasing number of turns; in particular, the HPT processing of 1 turn leads to the precipitation of 10% omega-phase from the beta-matrix, but at 10 turns of HPTa reverse phase transformation is observed. It is shown that nanostructure formation with a minimum content of the v-phase allows for achievement of significant strengthening in the alloy while preserving a relatively low elastic modulus.

引用

页码：1742 / 1747

页数：6

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