J. Mater. Sci. Technol. ›› 2019, Vol. 35 ›› Issue (11): 2513-2525.DOI: 10.1016/j.jmst.2019.04.036
• Orginal Article • Previous Articles Next Articles
Jinhu Zhang, Jinmin Liu, Dongsheng Xu*(), Jie Wu, Lei Xu, Rui Yang
Received:
2019-02-21
Revised:
2019-03-19
Accepted:
2019-04-15
Online:
2019-11-05
Published:
2019-10-21
Contact:
Xu Dongsheng
About author:
1The authors equally contributed to this work.
Jinhu Zhang, Jinmin Liu, Dongsheng Xu, Jie Wu, Lei Xu, Rui Yang. Characterization of the prior particle boundaries in a powder metallurgy Ti2AlNb alloy[J]. J. Mater. Sci. Technol., 2019, 35(11): 2513-2525.
Ti | Al | Nb | Mo | O | N | H |
---|---|---|---|---|---|---|
Bal. | 21.06 | 23.66 | 0.51 | 0.30 | 0.039 | 0.27 |
Table 1 Chemical compositions of Ti-22Al-24Nb-0.5Mo (at.%) pre-alloyed powder.
Ti | Al | Nb | Mo | O | N | H |
---|---|---|---|---|---|---|
Bal. | 21.06 | 23.66 | 0.51 | 0.30 | 0.039 | 0.27 |
Fig. 2. The SEM photographs of as-HIPped Ti2AlNb-based alloy samples showing morphologies and phases: (a, b) at 920 °C; (c, d) at 980 °C, respectively.
Sample | Phase | Ti | Al | Nb | Mo |
---|---|---|---|---|---|
920 °C | α2 | 59.66 | 23.59 | 16.61 | 0.14 |
B2 | 53.07 | 15.19 | 31.14 | 0.59 | |
O | 54.03 | 21.02 | 24.60 | 0.35 | |
980 °C | α2 | 60.55 | 24.47 | 14.90 | 0.08 |
B2/O | 53.61 | 19.59 | 26.38 | 0.42 |
Table 2 The main element concentration in different phases after 920 and 980 °C HIPping (at.%).
Sample | Phase | Ti | Al | Nb | Mo |
---|---|---|---|---|---|
920 °C | α2 | 59.66 | 23.59 | 16.61 | 0.14 |
B2 | 53.07 | 15.19 | 31.14 | 0.59 | |
O | 54.03 | 21.02 | 24.60 | 0.35 | |
980 °C | α2 | 60.55 | 24.47 | 14.90 | 0.08 |
B2/O | 53.61 | 19.59 | 26.38 | 0.42 |
Fig. 3. EPMA test for three different phases for 920 °C sample: (a) microstructure consisting of α2, B2 and O; (b)-(f) element distribution maps showing the enrichment and depletion of Ti, Al, Nb, Mo and O in different phases respectively. (Color scale on the right side of Fig. 3(b) represents element contents, with red refers to high, while blue corresponds to low contents).
Fig. 5. (a,b) Microstructure of 920 °C sample (Red-B2 phase, Blue-O phase, Yellow-α2 phase). (c) the regions there is a deviation from BOR greater than 10° showed by black lines. (d, e) inverse pole figure (IPF) and {0001} pole figure (PF) of α2 phase. (f) (g) The IPF, {100} PF for O phase.
Fig. 6. (a, b) Microstructure of 980 °C sample (Red-B2 phase, Blue-O phase, Yellow-α2 phase); (c) the regions there is a deviation from BOR greater than 10° showed by black lines; (d, e) IPF and {0001} PF of α2 phase; (f, g) The IPF, {100} PF for O phase.
Fig. 7. Frequency distribution of the misorientation (point to point) in different phases at 920 °C (a-c) and 980 °C (d-f). The partial views of the inner of the dashed box are zoomed in (c) and (f).
Fig. 9. Orientation variation of B2 phase in the cell at 920 (a-c) and 980 °C (d-f). In (c) and (d), “p 2 p” means point to point and “p 2 o” means point to origin.
|
[1] | Pengfei Gao, Mingwang Fu, Mei Zhan, Zhenni Lei, Yanxi Li. Deformation behavior and microstructure evolution of titanium alloys with lamellar microstructure in hot working process: A review [J]. J. Mater. Sci. Technol., 2020, 39(0): 56-73. |
[2] | Yingdong Zhang, Fusen Yuan, Fuzhou Han, Muhammad Ali, Wenbin Guo, Geping Li, Chengze Liu, Hengfei Gu. The influence of microtexture on the formation mechanism of nodules in Zircaloy-4 alloy tube [J]. J. Mater. Sci. Technol., 2020, 47(0): 68-75. |
[3] | Zhihong Wu, Hongchao Kou, Nana Chen, Mengqi Zhang, Ke Hua, Jiangkun Fan, Bin Tang, Jinshan Li. Duality of the fatigue behavior and failure mechanism in notched specimens of Ti-7Mo-3Nb-3Cr-3Al alloy [J]. J. Mater. Sci. Technol., 2020, 50(0): 204-214. |
[4] | Hao Wu, Yunlei Xu, Zhihao Wang, Zhenhua Liu, Qinggang Li, Jinkai Li, Junyan Wu. The influence of solute atom ordering on the deformation behavior of hexagonal close packed Ti-Al alloys [J]. J. Mater. Sci. Technol., 2020, 52(0): 235-242. |
[5] | Jixin Yang, Yiqiang Chen, Yongjiang Huang, Zhiliang Ning, Baokun Liu, Chao Guo, Jianfei Sun. Hierarchical microstructure of a titanium alloy fabricated by electron beam selective melting [J]. J. Mater. Sci. Technol., 2020, 42(0): 1-9. |
[6] | Wei Xu, Xin Lu, Jingjing Tian, Chao Huang, Miao Chen, Yu Yan, Luning Wang, Xuanhui Qu, Cuie Wen. Microstructure, wear resistance, and corrosion performance of Ti35Zr28Nb alloy fabricated by powder metallurgy for orthopedic applications [J]. J. Mater. Sci. Technol., 2020, 41(0): 191-198. |
[7] | Dongjun Wang, Hao Li, Wei Zheng. Oxidation behaviors of TA15 titanium alloy and TiBw reinforced TA15 matrix composites prepared by spark plasma sintering [J]. J. Mater. Sci. Technol., 2020, 37(0): 46-54. |
[8] | C. Garcia-Cabezon, C. Garcia-Hernandez, M.L. Rodriguez-Mendez, F. Martin-Pedrosa. A new strategy for corrosion protection of porous stainless steel using polypyrrole films [J]. J. Mater. Sci. Technol., 2020, 37(0): 85-95. |
[9] | Xiankun Ji, Baoqi Guo, Fulin Jiang, Hong Yu, Dingfa Fu, Jie Teng, Hui Zhang, John J.Jonas. Accelerated flow softening and dynamic transformation of Ti-6Al-4V alloy in two-phase region during hot deformation via coarsening α grain [J]. J. Mater. Sci. Technol., 2020, 36(0): 160-166. |
[10] | Ke Yue, Jianrong Liu, Haijun Zhang, Hui Yu, Yuanyuan Song, Qingmiao Hu, Qingjiang Wang, Rui Yang. Precipitates and alloying elements distribution in near α titanium alloy Ti65 [J]. J. Mater. Sci. Technol., 2020, 36(0): 91-96. |
[11] | B. Zhou, D. Wu, R.S. Chen, En-hou Han. Enhanced tensile properties in a Mg-6Gd-3Y-0.5Zr alloy due to hot isostatic pressing (HIP) [J]. J. Mater. Sci. Technol., 2019, 35(9): 1860-1868. |
[12] | Y. Jiao, L.J. Huang, S.L. Wei, H.X. Peng, Q. An, S. Jiang, L. Geng. Constructing two-scale network microstructure with nano-Ti5Si3 for superhigh creep resistance [J]. J. Mater. Sci. Technol., 2019, 35(8): 1532-1542. |
[13] | Lei Cao, Ihsan Ullah, Na Li, Shiyu Niu, Rujie Sun, Dandan Xia, Rui Yang, Xing Zhang. Plasma spray of biofunctional (Mg, Sr)-substituted hydroxyapatite coatings for titanium alloy implants [J]. J. Mater. Sci. Technol., 2019, 35(5): 719-726. |
[14] | Z.B. Zhao, Z. Liu, Q.J. Wang, J.R. Liu, R. Yang. Analysis of local crystallographic orientation in an annealed Ti60 billet [J]. J. Mater. Sci. Technol., 2019, 35(4): 591-595. |
[15] | Zhongwei Ma, Yanye Jin, Shude Ji, Xiangchen Meng, Lin Ma, Qinghua Li. A general strategy for the reliable joining of Al/Ti dissimilar alloys via ultrasonic assisted friction stir welding [J]. J. Mater. Sci. Technol., 2019, 35(1): 94-99. |
Viewed | ||||||
Full text |
|
|||||
Abstract |
|
|||||