The Atomic Defect Relaxation Processes in the Ti-Mo Alloys
文献类型：期刊论文
| 作者 | Zhou, Z. C.2; Yang, Y. F.2; Du, J.2; Gu, S. Y.2; Zhu, X. B.2; Yan, Y. J.2; Sun, M.1
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| 刊名 | MATERIALS TRANSACTIONS
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| 出版日期 | 2020 |
| 卷号 | 61 |
| ISSN号 | 1345-9678 |
| 关键词 | relaxation atomic defects Ti-Mo alloys Mo content microstructures |
| DOI | 10.2320/matertrans.MT-M2019379 |
| 通讯作者 | Zhou, Z. C.(1355326160@qq.com) |
| 英文摘要 | The relaxation processes correlated to atomic defects were investigated by the internal friction method using a multifunctional internal friction apparatus for Ti-Mo alloys. The microstructures of the Ti-Mo alloys with different Mo content and heat treatments were observed using an optic microscopy and a scanning electronic microscopy. Their phase constitutions were detected by X-ray diffraction (XRD). The beta phase increases and alpha phase decreases in volume with increasing Mo content for the furnace-cooled alloys. Similarly, the beta(M) phase volume increases when Mo content is increased. The two relaxational internal friction peaks, named as P1 for the low temperature peak and P2 for the high temperature peak, respectively, are found on the internal friction temperature dependent curves in the alloys. The two peaks always appear in the present experimental specimens with different Mo content and different heat treatments except for the water quenched Ti-24 Mo alloys. The P1 and P2 peaks are all influenced by Mo content and heat treatments and related to phase constitutions and microstructures. The P1 peak height increases with increasing Mo content for the water quenched alloys and the P1 peak temperature is not changed with Mo content. The P2 peak height increases also with increasing Mo content and the P2 peak temperature is raised when Mo content is increased but for the water quenched Ti-3Mo and Ti- 5Mo alloys. Relaxation parameters of P1 peak are H-wq1 = 1.56 +/- 0.1 eV and tau(0wq1) = 2.5 x 10(-16 +/- 0.1) s and those of P2 peak are H-wq2 = 2.3 +/- 0.1 eV and tau(0wq2) = 2.1 x 10(-17)+/-(0.1) s for the water-quenched Ti-5Mo alloy, respectively. The P1 peak is attributed to the stress-induced short-range ordering of oxygen complexes around Ti atoms in the Ti-Mo alloys. The increase of the P1 peak height with increasing Mo content is attributed to the increase of beta phase in volume. The P2 peak is resulted from the interaction of Mo-O atoms or the reorientation of Mo-Mo atomic pairs by means of vacancies. The Mo-O interaction is strengthened when Mo content is increased, which results in the increase of both the peak temperature and the activation energy of the P2 peak. |
| WOS关键词 | SNOEK RELAXATION ; INTERNAL-FRICTION ; BCC METALS ; BETA ; BEHAVIOR ; MICROSTRUCTURE ; FE |
| 资助项目 | Research Center of New Functional Materials and Intelligent Testing Instruments in Suzhou Vocational University ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China[19KJD470005] ; Suzhou Key Industry Technology Innovation Project[SYG201939] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | JAPAN INST METALS & MATERIALS |
| WOS记录号 | WOS:000536149400001 |
| 资助机构 | Research Center of New Functional Materials and Intelligent Testing Instruments in Suzhou Vocational University ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China ; Suzhou Key Industry Technology Innovation Project |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/103209]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhou, Z. C. |
| 作者单位 | 1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Solid State Phys, Hefei 230031, Anhui, Peoples R China 2.Suzhou Vocat Univ, Suzhou 215104, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Z. C.,Yang, Y. F.,Du, J.,et al. The Atomic Defect Relaxation Processes in the Ti-Mo Alloys[J]. MATERIALS TRANSACTIONS,2020,61. |
| APA | Zhou, Z. C..,Yang, Y. F..,Du, J..,Gu, S. Y..,Zhu, X. B..,...&Sun, M..(2020).The Atomic Defect Relaxation Processes in the Ti-Mo Alloys.MATERIALS TRANSACTIONS,61. |
| MLA | Zhou, Z. C.,et al."The Atomic Defect Relaxation Processes in the Ti-Mo Alloys".MATERIALS TRANSACTIONS 61(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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