Investigation on Strengthening Mechanism of China Low-Activation Ferrite Steel upon Thermo-Mechanical Treatment

doi:10.1007/s40195-023-01629-1

IMR OpenIR

	Investigation on Strengthening Mechanism of China Low-Activation Ferrite Steel upon Thermo-Mechanical Treatment
	Yang, Dongtian 1,2; Xiong, Liangyin 1,2; Liao, Hongbin 3; Yang, Guoping 3; Wang, Xiaoyu 3; Liu, Shi 1,2
通讯作者	Xiong, Liangyin(lyxiong@imr.ac.cn) ; Liu, Shi(sliu@imr.ac.cn)
	2023-12-19
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	15
摘要	The objective of this study was to investigate the influence of strengthening mechanisms on the high-temperature mechanical properties of China low-activation ferrite (CLF-1) steel, which underwent thermodynamic design and thermo-mechanical treatment (TMT). The microstructure characterization in the normalized and tempered condition and the TMT condition was carried out using optical microscopy, X-ray diffractometer, and scanning electron microscopy with electron backscatter diffraction. High-resolution transmission electron microscopy was employed to determine the crystallographic structures of precipitated phases. The results indicated that the addition of Ti led to an increase in the allocation of C in MC phase and an enhancement in the content of MC phase. Compared to CLF-P steel in the normalized and tempered condition, a 1.5-fold increase in dislocation density and an order of magnitude improvement in MX phase density were achieved after TMT. The formation of high-density nano-scale MC phases during TMT played a significant role in precipitation strengthening due to their favorable coherent relationship with the matrix and low interfacial free energy. The excellent high-temperature mechanical properties observed in CLF-P steel after TMT can be attributed to the combined effects of precipitation strengthening, dislocation strengthening, and lath strengthening.
关键词	China low-activation ferrite (CLF-1) steel Thermo-mechanical treatment MC phase Crystallographic structure Strengthening mechanism
资助者	State Key Laboratory of Nuclear Physics and Technology, Peking University
DOI	10.1007/s40195-023-01629-1
收录类别	SCI
语种	英语
资助项目	State Key Laboratory of Nuclear Physics and Technology, Peking University[NPT2021KF-ZX]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001128263900003
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：3[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/321006/183335
专题	中国科学院金属研究所
通讯作者	Xiong, Liangyin; Liu, Shi
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Southwestern Inst Phys, Ctr Fus Sci, Chengdu 610041, Peoples R China
推荐引用方式 GB/T 7714	Yang, Dongtian,Xiong, Liangyin,Liao, Hongbin,et al. Investigation on Strengthening Mechanism of China Low-Activation Ferrite Steel upon Thermo-Mechanical Treatment[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2023:15.
APA	Yang, Dongtian,Xiong, Liangyin,Liao, Hongbin,Yang, Guoping,Wang, Xiaoyu,&Liu, Shi.(2023).Investigation on Strengthening Mechanism of China Low-Activation Ferrite Steel upon Thermo-Mechanical Treatment.ACTA METALLURGICA SINICA-ENGLISH LETTERS,15.
MLA	Yang, Dongtian,et al."Investigation on Strengthening Mechanism of China Low-Activation Ferrite Steel upon Thermo-Mechanical Treatment".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2023):15.