| Effects of Thermal Exposure Temperature on Room-Temperature Tensile Properties of Ti65 Alloy | |
| Wang, Yuan-Chen1; Liu, Jian-Yang2; Liu, Jian-Rong1; Li, Wen-Yuan1; Zhang, Bin2; Zhang, Guang-Ping1 | |
| 通讯作者 | Liu, Jian-Rong(jrliu@imr.ac.cn) ; Zhang, Guang-Ping(gpzhang@imr.ac.cn) |
| 2024-09-01 | |
| 发表期刊 | MATERIALS
 |
| 卷号 | 17期号:17页码:17 |
| 摘要 | As a critical material for high-temperature components of aero-engines, the mechanical properties of Ti65 alloy, subjected to high-temperature and long-term thermal exposure, directly affect its service safety. The room-temperature tensile properties of the Ti65 alloy after thermal exposure to temperatures ranging from 450 degrees C to 650 degrees C for 100 h were investigated. The results indicate that as the thermal exposure temperature increases, the strength of Ti65 alloy initially increases and then decreases, while ductility exhibits a decreasing trend. The strength of the thermally exposed alloy positively correlates with the size and content of the alpha 2 phase. The ductility of the thermally exposed alloy is comprehensively influenced by the surface oxidation behavior, alpha 2 phase, and silicides. After the prolonged thermal exposure, stress concentration at the crack tips within the oxide layer was enhanced with the increased thickness of the surface TiO2 oxide layer, leading to premature fracture due to reduced alloy ductility. Furthermore, the alpha 2 phase in the matrix promotes the planar slip of dislocations, while silicides at the alpha/beta phase boundaries hinder dislocation motion, causing dislocation pile-ups. Both behaviors facilitate crack nucleation and deteriorate alloy ductility. |
| 关键词 | Ti65 alloy thermal exposure tensile property oxide layer precipitate silicide |
| 资助者 | National Science and Technology Major Project |
| DOI | 10.3390/ma17174424 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Science and Technology Major Project ; [J2019-VI-0012-0126] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
| WOS类目 | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter |
| WOS记录号 | WOS:001311055200001 |
| 出版者 | MDPI |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/189929 |
| 专题 | 中国科学院金属研究所 |
| 通讯作者 | Liu, Jian-Rong; Zhang, Guang-Ping |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yuan-Chen,Liu, Jian-Yang,Liu, Jian-Rong,et al. Effects of Thermal Exposure Temperature on Room-Temperature Tensile Properties of Ti65 Alloy[J]. MATERIALS,2024,17(17):17. |
| APA | Wang, Yuan-Chen,Liu, Jian-Yang,Liu, Jian-Rong,Li, Wen-Yuan,Zhang, Bin,&Zhang, Guang-Ping.(2024).Effects of Thermal Exposure Temperature on Room-Temperature Tensile Properties of Ti65 Alloy.MATERIALS,17(17),17. |
| MLA | Wang, Yuan-Chen,et al."Effects of Thermal Exposure Temperature on Room-Temperature Tensile Properties of Ti65 Alloy".MATERIALS 17.17(2024):17. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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