The role of multiple interfaces induced by hierarchical phase structures in the corrosion of low-cost titanium alloys
Recently, there has been a growing anticipation for developing titanium alloys with low cost and excellent properties. Working towards this goal, a hierarchical phase structure comprising micron-scale α phase and micron-scale and nano-scale α′ phases in Ti-Al-V-Fe-Mo alloys was obtained via vacuum m...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127524008967 |
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| author | Zhongli Qiao Qinyang Zhao Ping Guo Cheng Lin Huan Wang Runqi Zhang Zixuan Meng Kuaishe Wang Yongqing Zhao |
| author_facet | Zhongli Qiao Qinyang Zhao Ping Guo Cheng Lin Huan Wang Runqi Zhang Zixuan Meng Kuaishe Wang Yongqing Zhao |
| author_sort | Zhongli Qiao |
| collection | DOAJ |
| description | Recently, there has been a growing anticipation for developing titanium alloys with low cost and excellent properties. Working towards this goal, a hierarchical phase structure comprising micron-scale α phase and micron-scale and nano-scale α′ phases in Ti-Al-V-Fe-Mo alloys was obtained via vacuum melting, forging, and solution treatment. The high-density hierarchical α′ martensite in Ti-Al-V-Fe-Mo alloys exhibits the high grain boundary density and the weak segregation of Fe and Mo. It promotes the formation of passivation films with low defect density and high film resistance on the alloy surface and the homogenous distribution of solutes within the matrix. This homogeneity significantly diminishes the tendency for pitting corrosion and enhances the overall corrosion resistance of the alloys. In addition, the analysed results of the valence electron theory model show the high electron density difference at α(0001)//β(110) is the primary reason for pitting in the interface of α/β. And the low strongest-bond energy of the α phase leads to its preferential corroded. The calculated results provide theoretical support for the experimental phenomena. |
| format | Article |
| id | doaj-art-0a85f820e6dd48099f40ab5e886cec6f |
| institution | Kabale University |
| issn | 0264-1275 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-0a85f820e6dd48099f40ab5e886cec6f2024-12-21T04:27:42ZengElsevierMaterials & Design0264-12752024-12-01248113521The role of multiple interfaces induced by hierarchical phase structures in the corrosion of low-cost titanium alloysZhongli Qiao0Qinyang Zhao1Ping Guo2Cheng Lin3Huan Wang4Runqi Zhang5Zixuan Meng6Kuaishe Wang7Yongqing Zhao8School of Metallurgy Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi 710055, China; Northwest Institute for Nonferrous Metal Research, Xi’an, Shaanxi 710016, ChinaSchool of Material Science and Engineering, Chang’an University, Xi’an, Shaanxi 710064, China; Corresponding authors.Northwest Institute for Nonferrous Metal Research, Xi’an, Shaanxi 710016, China; Corresponding authors.School of Mechanical Engineering, Liaoning Petrochemical University, Fushun, Liaoning 113001, ChinaNorthwest Institute for Nonferrous Metal Research, Xi’an, Shaanxi 710016, ChinaNorthwest Institute for Nonferrous Metal Research, Xi’an, Shaanxi 710016, China; School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, ChinaSchool of Mechanical Engineering, Liaoning Petrochemical University, Fushun, Liaoning 113001, ChinaSchool of Metallurgy Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi 710055, ChinaNorthwest Institute for Nonferrous Metal Research, Xi’an, Shaanxi 710016, China; Corresponding authors.Recently, there has been a growing anticipation for developing titanium alloys with low cost and excellent properties. Working towards this goal, a hierarchical phase structure comprising micron-scale α phase and micron-scale and nano-scale α′ phases in Ti-Al-V-Fe-Mo alloys was obtained via vacuum melting, forging, and solution treatment. The high-density hierarchical α′ martensite in Ti-Al-V-Fe-Mo alloys exhibits the high grain boundary density and the weak segregation of Fe and Mo. It promotes the formation of passivation films with low defect density and high film resistance on the alloy surface and the homogenous distribution of solutes within the matrix. This homogeneity significantly diminishes the tendency for pitting corrosion and enhances the overall corrosion resistance of the alloys. In addition, the analysed results of the valence electron theory model show the high electron density difference at α(0001)//β(110) is the primary reason for pitting in the interface of α/β. And the low strongest-bond energy of the α phase leads to its preferential corroded. The calculated results provide theoretical support for the experimental phenomena.http://www.sciencedirect.com/science/article/pii/S0264127524008967Low-cost titanium alloysElectrochemicalCorrosion behaviourValence electron model |
| spellingShingle | Zhongli Qiao Qinyang Zhao Ping Guo Cheng Lin Huan Wang Runqi Zhang Zixuan Meng Kuaishe Wang Yongqing Zhao The role of multiple interfaces induced by hierarchical phase structures in the corrosion of low-cost titanium alloys Materials & Design Low-cost titanium alloys Electrochemical Corrosion behaviour Valence electron model |
| title | The role of multiple interfaces induced by hierarchical phase structures in the corrosion of low-cost titanium alloys |
| title_full | The role of multiple interfaces induced by hierarchical phase structures in the corrosion of low-cost titanium alloys |
| title_fullStr | The role of multiple interfaces induced by hierarchical phase structures in the corrosion of low-cost titanium alloys |
| title_full_unstemmed | The role of multiple interfaces induced by hierarchical phase structures in the corrosion of low-cost titanium alloys |
| title_short | The role of multiple interfaces induced by hierarchical phase structures in the corrosion of low-cost titanium alloys |
| title_sort | role of multiple interfaces induced by hierarchical phase structures in the corrosion of low cost titanium alloys |
| topic | Low-cost titanium alloys Electrochemical Corrosion behaviour Valence electron model |
| url | http://www.sciencedirect.com/science/article/pii/S0264127524008967 |
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