Dynamic recrystallization and hot processing map of Ti-48Al-2Cr-2Nb alloy during the hot deformation

doi:10.1016/j.matchar.2021.111332

CORC > 金属研究所 > 中国科学院金属研究所

	Dynamic recrystallization and hot processing map of Ti-48Al-2Cr-2Nb alloy during the hot deformation
	Chen, Xiaofei 1; Tang, Bin 1,2; Liu, Dong 3; Wei, Beibei 1; Zhu, Lei 1; Liu, Renci 3; Kou, Hongchao 1,2; Li, Jinshan 1,2
刊名	MATERIALS CHARACTERIZATION
	2021-09-01
卷号	179 页码:10
关键词	TiAl alloy Discontinuous dynamic recrystallization (DDRX) Continuous dynamic recrystallization (CDRX) Hot processing map
ISSN号	1044-5803
DOI	10.1016/j.matchar.2021.111332
通讯作者	Tang, Bin(toby@nwpu.edu.cn)
英文摘要	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).
资助项目	National Natural Science Foundation of China[51771150] ; Aeronautical Science Foundation of China[201936053001]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000692236900001
资助机构	National Natural Science Foundation of China ; Aeronautical Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/166879]
专题	金属研究所_中国科学院金属研究所
通讯作者	Tang, Bin
作者单位	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
推荐引用方式 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.