The Effect of Chemical and Phase Composition on Mechanical Properties and Thermal Stability of Ultrafine-Grained Titanium Alloys

被引：2

作者：

Naydenkin, E. V. ^{[1
,2
]}

Mishin, I. P. ^{[1
]}

Ratochka, I. V. ^{[1
]}

Lykova, O. N. ^{[1
]}

机构：

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

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

来源：

PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2019 | 2019年 / 2167卷

关键词：

D O I：

10.1063/1.5132106

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Severe plastic deformation by the method of multidirectional pressing allows the formation of a homogeneous ultrafine-grained structure with an average grain size of 0.1-0.3 mu m and high defect density in titanium alloys of different grades. This leads to a significant increase in strength properties of the ultrafine-grained titanium alloys compared to coarse-grained analogues. Herewith, the contribution to the total strength of grain structure refinement decreases with increasing concentration of the alloying elements. The near beta titanium alloy exhibits higher thermal stability compared to pseudo a and alpha + beta alloys due to the larger volume fraction of the beta phase and the formation of a two-phase micro duplex structure as a result of severe plastic deformation processing.

引用

页数：4

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