The effect of oxygen and stress state on the yield behavior of commercially pure titanium

被引：43
作者：
Brandes, M. C. [1 ]
Baughman, M. [1 ]
Mills, M. J. [1 ]
Williams, J. C. [1 ]
机构：
[1] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2012年 / 551卷
关键词：
Titanium alloys; Deformation; Yield strength asymmetry; Oxygen effects; MOLECULAR-DYNAMICS SIMULATION; CLOSE-PACKED METALS; DISLOCATION CORE STRUCTURE; NIOBIUM SINGLE-CRYSTALS; ALPHA-TITANIUM; SCREW DISLOCATIONS; PLASTIC-DEFORMATION; HCP METALS; COMPUTER-SIMULATION; BCC METALS;
D O I：
10.1016/j.msea.2012.04.058
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Titanium alloys containing a majority volume fraction of the low temperature HCP alpha-phase have been known to display yield and creep strength asymmetries when deformed under uniaxial conditions at room temperature. This behavior has only been documented in materials alloyed with significant concentrations of aluminum (<similar to 10 at%); however, little work has examined the phenomenon in commercial purity alloys. In this study, the yield strengths of two commercial purity titanium alloy sheet materials (Grade 1 and Grade 4) are examined under tensile and compressive loading conditions. Yield strength asymmetry has been observed and has been found to be dependent on alloy composition and crystallite distribution relative to the deformation axis. (C) 2012 Elsevier B.V. All rights reserved.
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页码：13 / 18
页数：6
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