| Dynamic recrystallization and hot processing map of Ti-48Al-2Cr-2Nb alloy during the hot deformation | |
| Chen, Xiaofei1; Tang, Bin1,2; Liu, Dong3; Wei, Beibei1; Zhu, Lei1; Liu, Renci3; Kou, Hongchao1,2; Li, Jinshan1,2 | |
| Corresponding Author | Tang, Bin(toby@nwpu.edu.cn) |
| 2021-09-01 | |
| Source Publication | MATERIALS CHARACTERIZATION
 |
| ISSN | 1044-5803 |
| Volume | 179Pages:10 |
| Abstract | Dynamic recrystallization (DRX) mechanism of Ti-48Al-2Cr-2Nb (at. %) alloy was investigated by thermal uniaxial compression experiments in this work. The deformed microstructure showed that in addition to the discontinuous dynamic recrystallization (DDRX) with the typical feature of grain nucleation and growth, continuous dynamic recrystallization (CDRX) charactered by the crystal orientation accumulation also appeared in gamma grains during the hot compression at 1200 degrees C/0.01 s-1. The crystal orientations of CDRX grains were nearly close to the (001) orientation at the strain of 0.92. Also, the emergence of DRX in the gamma laths of lamellar colonies was confirmed by microstructure characterization, and the alpha 2 -* gamma phase transformation occurred simultaneously. On the other hand, the GOS threshold value for distinguishing the deformed grains and DRX grains was analyzed to quantitatively calculate the DRX volume fractions. A novel hot processing map with the strain of 0.92 based on the DRX volume fraction was established to obtain the deformation parameters for the full DRX and provide the theoretical results for optimizing the thermo-mechanical treatment of TiAl alloy (approximately 1100 degrees C/0.001 s-1 and 1200 degrees C/0.01 s-1). |
| Keyword | TiAl alloy Discontinuous dynamic recrystallization (DDRX) Continuous dynamic recrystallization (CDRX) Hot processing map |
| Funding Organization | National Natural Science Foundation of China ; Aeronautical Science Foundation of China |
| DOI | 10.1016/j.matchar.2021.111332 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51771150] ; Aeronautical Science Foundation of China[201936053001] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing |
| WOS ID | WOS:000692236900001 |
| Publisher | ELSEVIER SCIENCE INC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/166880 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Tang, Bin |
| Affiliation | 1.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China 2.Northwestern Polytech Univ, Chongqing Innovat Ctr, Chongqing 401135, Peoples R China 3.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Chen, Xiaofei,Tang, Bin,Liu, Dong,et al. Dynamic recrystallization and hot processing map of Ti-48Al-2Cr-2Nb alloy during the hot deformation[J]. MATERIALS CHARACTERIZATION,2021,179:10. |
| APA | Chen, Xiaofei.,Tang, Bin.,Liu, Dong.,Wei, Beibei.,Zhu, Lei.,...&Li, Jinshan.(2021).Dynamic recrystallization and hot processing map of Ti-48Al-2Cr-2Nb alloy during the hot deformation.MATERIALS CHARACTERIZATION,179,10. |
| MLA | Chen, Xiaofei,et al."Dynamic recrystallization and hot processing map of Ti-48Al-2Cr-2Nb alloy during the hot deformation".MATERIALS CHARACTERIZATION 179(2021):10. |
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