| METALS AND METAL MATRIX COMPOSITES |
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| Dynamic and Static Spherical Mechanisms of α Phase in Near α Titanium Alloy with Erbium |
| WANG Tongbo1,2,*, LI Bolong2, QI Peng1,2, WANG Yunpeng1, MO Yongda1, LOU Huafen1
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1 Chinalco Research Institute of Science and Technology Co., Ltd., Beijing 102209, China
2 School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China |
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Abstract The scientific issue was investigated for the spherical mechanisms of α phase in near α titanium alloy with erbium, aimed to preparate the α phase with random crystal orientation. A novel high temperature titanium alloy with erbium was studied to clarify the micro-structural evolution on the thermal mechanical conditions. Meanwhile, the micro-structure model was established to clarify the dynamic and static spherical mechanisms of α phase. During the thermal-mechanical deformation, the spherical mechanism of lamellar α colony was the continuous dynamic recrystallization, controlled by the mechanical rotation of the sub-grain followed by dislocation climbing and annihilation by diffusion. During the thermal process, the static spheroidization was developed on basics of the β inserted model. During the thermal-mechanical deformation, the sub-structure was induced by the interaction between the slipping dislocation with b of 1/3[2112]. And then, the mis-orientation was increased to develop to the dynamic recrystallization. During the thermal process, the static spherical process, the equiaxial αp grains and retained β transformed microstructures were prepared. Furthermore, retained β transformed microstructures consisted of β phase and secondary αs lamellar with the thickness of 30 nm.
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Published: 10 September 2024
Online: 2024-09-30
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| Fund:National Natural Science Foundation of China (91860113), Beijing Natural Science Foundation (2162004), and Strategic Frontier Technology Major Project of Chinalco Group (ZL2218). |
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1 Huang X, Zhu Z S, Wang H H. Advanced aeronantical titanium alloys and applications, Defense Industry Press, China, 2012(in Chinese).
黄旭, 朱知寿, 王红红. 先进航空钛合金材料与应用, 国防工业出版社, 2012.
2 Huang X, Li Z X, Huang H. Materials China, 2011, 30(6), 21(in Chinese).
黄旭, 李臻熙, 黄浩. 中国材料进展, 2011, 30(6), 21.
3 Cai J M, Mi G B, Gao F, et al. Journal of Materials Engineering, 2016, 44(8), 1(in Chinese).
蔡建明, 弭光宝, 高帆, 等. 材料工程, 2016, 44(8), 1.
4 Lapin J. Scripta Materialia, 2004, 50(2), 261.
5 Wang Q J, Liu J R, Yang R. Journal of Aeronautical Materials, 2014, 34(4), 1(in Chinese).
王清江, 刘建荣, 杨锐. 航空材料学报, 2014, 34(4), 1.
6 Lee D H, Nama S W, Choe S J. Materials Science and Engineering A, 2000, 291(1-2) 60.
7 Zhao Z L, Li H, Fu M W, et al. Journal of Alloys and Compounds, 2014, 617, 525.
8 Ma F C, Lu W J, Qin J N, et al. Materials Science and Engineering A, 2006, 416(1-2), 59.
9 Han Y F, Zeng W D, Qi Y L, et al. Materials Science and Engineering A, 2011, 528(29-30), 8410.
10 Stefansson N, Semiatin S L. Metallurgical and Materials Transactions A, 2003, 34A(3), 691.
11 Seshacharyulu T, Medeiros S C, Morgan J T. Materials Science and Engineering A, 2000, 279(1-2), 289.
12 Banerjee D, Williams J C. Acta Materialia, 2013, 61(3), 844.
13 Wang T B, Li B L, Wang Z Q, et al. Materials Science & Engineering A, 2018, 731, 12.
14 Wang T B, Li B L, Wang Z Q, et al. Journal of Materials Research, 2017, 32, 1517.
15 Germain L, Gey N, Humbert M, et al. Acta Materialia, 2005, 53(13), 3535.
16 Germain L, Gey N, Humbert M, et al. Acta Materialia, 2008, 56 (16), 4298.
17 Zhao Z B, Wang Q J, Hu Q M, et al. Acta Materialia, 2017, 126, 372.
18 Zhao Z B, Wang Q J, Liu J R, et al. Metallurgical and Materials Transactions A, 2018, 49A, 4937. |
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2024, Vol. 38 
