| Enhancement of glass-forming ability and thermal stability of a soft magnetic Co(75)B(25)metallic glass by micro-alloying Y and Nb | |
| Bao, Feng1; Li, Yan-hui1; Zhu, Zheng-wang2; Liang, Xin-yu1; Zhang, Yan3; Zhang, Wei1 | |
| Corresponding Author | Zhang, Wei(wzhang@dlut.edu.cn) |
| 2020-09-15 | |
| Source Publication | JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
 |
| ISSN | 1006-706X |
| Pages | 7 |
| Abstract | Soft magnetic Co-based Co-Y-Nb-B bulk metallic glasses (BMGs) without Fe have been developed by micro-alloying Y and Nb into a Co(75)B(25)alloy. First, addition of 3-4 at.% Y promotes the occurrence of glass transition and increases the supercooled liquid stability and magnetic softness. Co(71.5)Y(3.5)B(25)metallic glass possesses a large supercooled liquid region (Delta T-x) of 33 K and low coercivity (H-c) of 1.5 A/m. Subsequent alloying 2-4 at.% Nb into Co(71.5)Y(3.5)B(25)alloy further enlarges Delta T(x)to 50 K, lowersH(c)to 0.9 A/m, and enables the formation of BMGs with a critical sample diameter up to 2.0 mm. The alloying Nb causes the formation of complex (Co, Nb, Y)(23)B(6)competing phase during crystallization and widens the melt undercooling during solidification, which improves the supercooled liquid stability and glass-forming ability, respectively. Co-Y-Nb-B BMGs also exhibit good soft magnetic and mechanical properties, i.e., lowH(c)of 0.9-1.2 A/m, relatively high saturation magnetic flux density of 0.36-0.57 T, high yielding strength of 3877-3930 MPa with plastic strain of 0.2%-0.3%, and high Vickers hardness of 1156-1201. The developed soft magnetic Co-based BMGs are promising for applications as structural and functional materials. |
| Keyword | Co-based bulk metallic glass Glass-forming ability Thermal stability Soft magnetic property Micro-alloying |
| Funding Organization | National Natural Science Foundation of China ; National Key Research and Development Program of China |
| DOI | 10.1007/s42243-020-00489-8 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51871039] ; National Natural Science Foundation of China[51771039] ; National Key Research and Development Program of China[2017YFB0903903] |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000569544100001 |
| Publisher | SPRINGER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/140503 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Wei |
| Affiliation | 1.Dalian Univ Technol, Key Lab Mat Modificat Laser Ion & Electron Beams, Minist Educ, Sch Mat Sci & Engn, Dalian 116024, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 3.Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan |
| Recommended Citation GB/T 7714 | Bao, Feng,Li, Yan-hui,Zhu, Zheng-wang,et al. Enhancement of glass-forming ability and thermal stability of a soft magnetic Co(75)B(25)metallic glass by micro-alloying Y and Nb[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2020:7. |
| APA | Bao, Feng,Li, Yan-hui,Zhu, Zheng-wang,Liang, Xin-yu,Zhang, Yan,&Zhang, Wei.(2020).Enhancement of glass-forming ability and thermal stability of a soft magnetic Co(75)B(25)metallic glass by micro-alloying Y and Nb.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,7. |
| MLA | Bao, Feng,et al."Enhancement of glass-forming ability and thermal stability of a soft magnetic Co(75)B(25)metallic glass by micro-alloying Y and Nb".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL (2020):7. |
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