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Control of competitive phase selection by in-situ nanoparticles

文献类型：期刊论文

作者Sun, Hao1,2; Jiang, Hongxiang1,2; Li, Yanqiang1,2; Zhang, Lili2; He, Jie1,2; Zhao, Jiuzhou1,2
刊名JOURNAL OF ALLOYS AND COMPOUNDS
出版日期2023-11-05
卷号962页码:13
关键词Competitive phase selection Solidification Nanoparticles Metastable alloy
ISSN号0925-8388
DOI10.1016/j.jallcom.2023.171202
通讯作者Jiang, Hongxiang(hxjiang@imr.ac.cn) ; Zhao, Jiuzhou(jzzhao@imr.ac.cn)
英文摘要The competitive phase selection during cooling a metastable alloy is mainly controlled by the process of nucleation and growth for either the equilibrium stable phase or metastable phase. However, the control of competitive phase selection is still a standing challenge. In this work, a general method for controlling the competitive phase selection process by in-situ forming nanoparticles is reported. The solidification experiments of Cu-Cr metastable immiscible alloys were performed to probe the effect of in-situ TiB2, Cr3C2/Cr7C3 or TiC nanoparticles. The results indicate that the Cr-rich minority phase originates from the liquid-solid phase transformation and exhibits coarse dendrite morphology for the Cu-Cr alloy without nanoparticles. In contrast, suitable nanoparticles may lower the Gibbs free energy barrier for the formation of metastable phase, trigger the liquid-liquid phase transformation, thus the Cr-rich minority phase almost shows spherical morphology and the size is only a few microns, even hundreds of nanometers. Furthermore, the microhardness of Cu-Cr alloys with nanoparticles is improved significantly. This strategy may have extensive application prospects for the modification of phase selection behaviors and solidification process of Cu-Cr metastable immiscible alloy.
资助项目National Key Research and Development Program of China[2021YFA0716303] ; Bureau of International Cooperation Chinese Academy of Sciences[172GJHZ2022038MI] ; Chinese Academy of Sciences Strategic Priority Program[XDC04030502] ; National Natural Science Foundation of China[51971227] ; National Natural Science Foundation of China[51974288] ; Science and Technology Project of Fujian Province[2020T3037]
WOS研究方向Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001033914800001
出版者ELSEVIER SCIENCE SA
资助机构National Key Research and Development Program of China ; Bureau of International Cooperation Chinese Academy of Sciences ; Chinese Academy of Sciences Strategic Priority Program ; National Natural Science Foundation of China ; Science and Technology Project of Fujian Province
源URL[http://ir.imr.ac.cn/handle/321006/178657]  
专题金属研究所_中国科学院金属研究所
通讯作者Jiang, Hongxiang; Zhao, Jiuzhou
作者单位1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Hao,Jiang, Hongxiang,Li, Yanqiang,et al. Control of competitive phase selection by in-situ nanoparticles[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2023,962:13.
APA Sun, Hao,Jiang, Hongxiang,Li, Yanqiang,Zhang, Lili,He, Jie,&Zhao, Jiuzhou.(2023).Control of competitive phase selection by in-situ nanoparticles.JOURNAL OF ALLOYS AND COMPOUNDS,962,13.
MLA Sun, Hao,et al."Control of competitive phase selection by in-situ nanoparticles".JOURNAL OF ALLOYS AND COMPOUNDS 962(2023):13.

入库方式： OAI收割

来源：金属研究所

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