Nanoprecipitation induced giant magnetostriction: A time-resolved small-angle neutron scattering study of the vacancy-assisted kinetics

doi:10.1016/j.jmst.2024.05.008

IMR OpenIR

	Nanoprecipitation induced giant magnetostriction: A time-resolved small-angle neutron scattering study of the vacancy-assisted kinetics
	Zhao, Xueting 1,2,3; Ke, Yubin 3,4; Xie, Shunfu 3; Sun, Meng 5; Jiang, Hanqiu 3,4; Li, Bing 1,2; Wang, Xun-Li 6
通讯作者	Ke, Yubin(keyb@ihep.ac.cn) ; Li, Bing(bingli@imr.ac.cn)
	2025-03-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	210 页码:1-9
摘要	Solid-state precipitation is an effective strategy for tuning the mechanical and functional properties of advanced alloys. Structure design and modification necessitate good knowledge of the kinetic evolution of precipitates during fabrication, which is strongly correlated with defect concentration. For Fe-Ga alloys, giant magnetostriction can be induced by the precipitation of the nanoscale tetragonal L60 phase. By introducing quenched-in vacancies, we significantly enhance the magnetostriction of the aged Fe81 Ga19 polycrystalline alloys to similar to 305 ppm, which is close to the level of single crystals. Although vacancies were found to facilitate the generation of the L60 phase, their impact on the precipitation mechanism and kinetics has yet to be revealed. This study combined transmission electron microscopy (TEM) and timeresolved small-angle neutron scattering (SANS) to investigate the precipitation of the L60 phase during the isothermal aging at 350 and 400 degrees C, respectively. The evolution of L60 nanophase in morphology and number density in as-cast (AC) and liquid nitrogen quenched (LN) Fe81 Ga19 alloys with aging time were quantitatively compared. Interestingly, the nucleation of the L60 phase proceeds progressively in AC while suddenly in LN specimens, indicating the homogenous to heterogeneous mechanism switching induced by concentrated vacancies. Moreover, excess vacancies can change the shape of nanoprecipitates and significantly accelerate the growth and coarsening kinetics. The magnetostrictive coefficient is optimized when the size (long-axis) of L60 precipitates lies between 100 and 110 A & ring; with a number density between 3.2-4.3 x 10-7 & ring;A-3 . Insight from this study validates the feasibility of achieving high magnetoelastic properties through precise manipulation of the nanostructure. (c) 2024 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science &
关键词	Nanoprecipitation Vacancy assisted Growth and coarsening kinetics Small -angle neutron scattering Fe-Ga alloys Magnetostriction
资助者	National Natural Science Foundation of China ; Guangdong Basic and Applied Basic Research Foundation, China ; Youth Innovation Promotion Association, CAS ; National Key Research and Development Program of China
DOI	10.1016/j.jmst.2024.05.008
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[12275154] ; Guangdong Basic and Applied Basic Research Foundation, China[2021B1515140028] ; Youth Innovation Promotion Association, CAS[2020010] ; National Key Research and Development Program of China[2021YFA1600701] ; National Key Research and Development Program of China[2021YFB3501201]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001254312500001
出版者	JOURNAL MATER SCI TECHNOL
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/187559
专题	中国科学院金属研究所
通讯作者	Ke, Yubin; Li, Bing
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Spallat Neutron Source Sci Ctr, Dongguan 523803, Peoples R China 4.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Key Lab Mat Phys, Inst Solid State Phys, HFIPS, Hefei 230031, Peoples R China 6.City Univ Hong Kong, Dept Phys, Kowloon, 83 Tat Chee Ave, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Xueting,Ke, Yubin,Xie, Shunfu,et al. Nanoprecipitation induced giant magnetostriction: A time-resolved small-angle neutron scattering study of the vacancy-assisted kinetics[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2025,210:1-9.
APA	Zhao, Xueting.,Ke, Yubin.,Xie, Shunfu.,Sun, Meng.,Jiang, Hanqiu.,...&Wang, Xun-Li.(2025).Nanoprecipitation induced giant magnetostriction: A time-resolved small-angle neutron scattering study of the vacancy-assisted kinetics.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,210,1-9.
MLA	Zhao, Xueting,et al."Nanoprecipitation induced giant magnetostriction: A time-resolved small-angle neutron scattering study of the vacancy-assisted kinetics".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 210(2025):1-9.