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

doi:10.1016/j.matchar.2021.111332

IMR OpenIR

	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
通讯作者	Tang, Bin(toby@nwpu.edu.cn)
	2021-09-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	179 页码:10
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).
关键词	TiAl alloy Discontinuous dynamic recrystallization (DDRX) Continuous dynamic recrystallization (CDRX) Hot processing map
资助者	National Natural Science Foundation of China ; Aeronautical Science Foundation of China
DOI	10.1016/j.matchar.2021.111332
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:000692236900001
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：54[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/166880
专题	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.