Mechanistic basis of oxygen sensitivity in titanium

被引：92

作者：

Chong, Yan ^{[1
,2
]}

Poschmann, Max ^{[1
]}

Zhang, Ruopeng ^{[1
,2
]}

Zhao, Shiteng ^{[1
,2
]}

Hooshmand, Mohammad S. ^{[1
]}

Rothchild, Eric ^{[1
]}

Olmsted, David L. ^{[1
]}

Morris, J. W., Jr. ^{[1
]}

Chrzan, Daryl C. ^{[1
,3
]}

Asta, Mark ^{[1
,3
]}

Minor, Andrew M. ^{[1
,2
,3
]}

机构：

[1] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA

[2] Lawrence Berkeley Natl Lab, Natl Ctr Electron Microscopy, Mol Foundry, Berkeley, CA 94720 USA

[3] Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA

来源：

SCIENCE ADVANCES | 2020年 / 6卷 / 43期

基金：

美国国家科学基金会;

关键词：

TOTAL-ENERGY CALCULATIONS; DEFORMATION; ALUMINUM; FAULTS; TI; PREDICTION; STRENGTH; BEHAVIOR; GROWTH; CREEP;

D O I：

10.1126/sciadv.abc4060

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

One of the most potent examples of interstitial solute strengthening in metal alloys is the extreme sensitivity of titanium to small amounts of oxygen. Unfortunately, these small amounts of oxygen also lead to a markedly decreased ductility, which in turn drives the increased cost to purify titanium to avoid this oxygen poisoning effect. Here, we report a systematic study on the oxygen sensitivity of titanium that provides a clear mechanistic view of how oxygen impurities affect the mechanical properties of titanium. The increased slip planarity of Ti-O alloys is caused by an interstitial shuffling mechanism, which is sensitive to temperature, strain rate, and oxygen content and leads to the subsequent alteration of deformation twinning behavior. The insights from our experimental and computational work provide a rationale for the design of titanium alloys with increased tolerance to variations in interstitial content, with notable implications for more widespread use of titanium alloys.

引用

页数：10

共 56 条

[1] Perspectives on Titanium Science and Technology
Banerjee, Dipankar
Williams, J. C.
[J]. ACTA MATERIALIA, 2013, 61 (03) : 844 - 879
[2] MODIFIED EMBEDDED-ATOM POTENTIALS FOR CUBIC MATERIALS AND IMPURITIES
BASKES, MI
[J]. PHYSICAL REVIEW B, 1992, 46 (05) : 2727 - 2742
[3] Effects of oxygen on prismatic faults in α-Ti: a combined quantum mechanics/molecular mechanics study
Bhatia, M. A.
Zhang, X.
Azarnoush, M.
Lu, G.
Solanki, K. N.
[J]. SCRIPTA MATERIALIA, 2015, 98 : 32 - 35
[4] THEORY OF CRYSTALLOGRAPHY OF DEFORMATION TWINNING
BILBY, BA
CROCKER, AG
[J]. PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1965, 288 (1413): : 240 - &
[5] BLACKBURN MJ, 1969, ASM TRANS Q, V62, P398
[6] Born M., 1954, DYNAMIC THEORY CRYST
[7] On the mechanistic basis of deformation at the microscale in hexagonal close-packed metals
Britton, T. B.
Dunne, F. P. E.
Wilkinson, A. J.
[J]. PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2015, 471 (2178):
[8] Periodic image effects in dislocation modelling
Cai, W
Bulatov, VV
Chang, JP
Li, J
Yip, S
[J]. PHILOSOPHICAL MAGAZINE, 2003, 83 (05) : 539 - 567
[9] Oxygen-dislocation interaction in titanium from first principles
Chaari, Nermine
Rodney, David
Clouet, Emmanuel
[J]. SCRIPTA MATERIALIA, 2019, 162 : 200 - 203
[10] Effect of deformation twinning on microstructure and texture evolution during cold rolling of CP-titanium
Chun, YB
Yu, SH
Semiatin, SL
Hwang, SK
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 398 (1-2): : 209 - 219

← 1 2 3 4 5 6 →