Understanding the Relations between Surface Stress State and Microstructure Feature for Enhancing the Fatigue Performance of TC6 Titanium Alloy Article Swipe
Song Shu
,
Xiaoxu Huang
,
Zonghui Cheng
,
Yizhou Shen
,
Zhaoru He
,
Weilan Liu
·
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.3390/coatings11101261
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.3390/coatings11101261
Fatigue performance has always been an important factor affecting the application of titanium alloy. The service life of TC6 titanium alloy is easily reduced under a continuously alternating load. Therefore, there is an urgent need for a new method to improve fatigue performance. Laser shock peening (LSP) is a widely proposed method to enhance the fatigue performance. Here, through experiments and finite element simulations, it was found that LSP can prolong the fatigue life of TC6 by improving the surface stress state. In strengthening processes, the generation of residual stress was mainly attributed to the change of microstructure, which could be reflected by the statistical results of grain sizes. The content of grains with a size under 0.8 μm reached 78%, and the microhardness value of treated TC6 was 18.7% higher than that of an untreated sample. In addition, the surface residual compressive stress was increased to −600 MPa at the depth of 1500 μm from the surface. On this basis, the fatigue life was prolonged to 135%, and the ultimate fracture macroscopic was also changed. With the treatment of LSP, the fatigue performance of TC6 is highly promoted. The strengthening mechanism of LSP was established with the aim of revealing the relationship between microstructure and stress state for enhancing the fatigue performance in whatever shapes.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/coatings11101261
- https://www.mdpi.com/2079-6412/11/10/1261/pdf?version=1634544800
- OA Status
- gold
- Cited By
- 5
- References
- 47
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W3205429909
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Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W3205429909Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/coatings11101261Digital Object Identifier
- Title
-
Understanding the Relations between Surface Stress State and Microstructure Feature for Enhancing the Fatigue Performance of TC6 Titanium AlloyWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2021Year of publication
- Publication date
-
2021-10-18Full publication date if available
- Authors
-
Song Shu, Xiaoxu Huang, Zonghui Cheng, Yizhou Shen, Zhaoru He, Weilan LiuList of authors in order
- Landing page
-
https://doi.org/10.3390/coatings11101261Publisher landing page
- PDF URL
-
https://www.mdpi.com/2079-6412/11/10/1261/pdf?version=1634544800Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
-
https://www.mdpi.com/2079-6412/11/10/1261/pdf?version=1634544800Direct OA link when available
- Concepts
-
Microstructure, Materials science, Titanium alloy, Residual stress, Peening, Shock (circulatory), Fatigue limit, Indentation hardness, Stress (linguistics), Metallurgy, Alloy, Service life, Cyclic stress, Fracture (geology), Composite material, Medicine, Philosophy, Linguistics, Internal medicineTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
5Total citation count in OpenAlex
- Citations by year (recent)
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2024: 2, 2023: 2, 2022: 1Per-year citation counts (last 5 years)
- References (count)
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47Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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