==== Front
Materials (Basel)
Materials (Basel)
materials
Materials
1996-1944 MDPI 

10.3390/ma13235364
materials-13-05364
Correction
Correction: Tang, L. et al., Effect of Oxygen Variation on High Cycle Fatigue Behavior of Ti-6Al-4V Titanium Alloy. Materials 2020, 13, 3858
Tang Luyao 1 Fan Jiangkun 12* Kou Hongchao 12 https://orcid.org/0000-0002-3355-5999Tang Bin 12 Li Jinshan 12* 1 State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, China; christinatang@mail.nwpu.edu.cn (L.T.); hchkou@nwpu.edu.cn (H.K.); toby@nwpu.edu.cn (B.T.)
2 National & Local Joint Engineering Research Center for Precision Thermoforming Technology of Advanced Metal Materials, Xi’an 710072, Shaanxi, China
* Correspondence: jkfan@nwpu.edu.cn (J.F.); ljsh@nwpu.edu.cn (J.L.)
26 11 2020 
12 2020 
26 11 2020 
13 23 536410 11 2020 20 11 2020 © 2020 by the authors.2020Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
==== Body
The author wishes to make the following correction to this paper [1]. After careful comparison and examination, we found that Figure 7(b1) and Figure 7(c1) are the same. The reason for the error is that this manuscript underwent many revisions during the writing and submission process. As such, Figure 7(c1) was wrongly copied twice accidentally in the combined editing of Figure 7. Due to the duplication of Figure 7(c1), please replace:

Figure 7 Fatigue fracture morphologies of the Ti-6Al-4V alloys with different oxygen contents: (a) Ti-6Al-4V-0.17O, (b) Ti-6Al-4V-0.20O, and (c) Ti-6Al-4V-0.23O, (1) macroscopic fracture morphologies (2) fatigue source regions, (3) fatigue propagation regions, and (4) instantaneous fracture zones.

with the following:

Figure 7 Fatigue fracture morphologies of the Ti-6Al-4V alloys with different oxygen contents: (a) Ti-6Al-4V-0.17O, (b) Ti-6Al-4V-0.20O, and (c) Ti-6Al-4V-0.23O, (1) macroscopic fracture morphologies, (2) fatigue source regions, (3) fatigue propagation regions, and (4) instantaneous fracture zones.

The correction of Figure 7 will not influence the original analysis of the results or the conclusion of this paper. The authors would like to apologize for any inconvenience caused to the readers by these changes.

Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Conflicts of Interest
The authors declare no conflict of interest.
==== Refs
References
1. Tang L.  Fan J.  Kou H.  Tang B.  Li J.   Effect of Oxygen Variation on High Cycle Fatigue Behavior of Ti-6Al-4V Titanium Alloy Materials 2020 13 3858 10.3390/ma13173858 32882907