Roles of Y and Fe contents on glass-forming ability, thermal stability, and magnetic properties of Co-based Co?Fe?Y?B bulk metallic glasses
Roles of Y and Fe contents on glass-forming ability, thermal stability, and magnetic properties of Co-based Co?Fe?Y?B bulk metallic glasses
复制标题
Y、Fe含量对钴基Co-Fe-Y-B块体金属玻璃成玻能力、热稳定性和磁性能的影响
DOI：
10.1016/j.intermet.2021.107135
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发表时间：
2021-02-26
期刊：
影响因子：
4.4
通讯作者：
Zhang, Wei
中科院分区：
文献类型：
--
作者：
Liang, Xinyu;Li, Yanhui;Zhang, Wei
具有大过冷液区（?）的软磁钴基大块金属玻璃（bmg）在新型Co?Fe?Y？B合金体系。在Co75B25合金中加入适量的Y和Fe，可增大？提高了玻璃形成能力（GFA）。？50的Tx ？对于（Co0.5?0.7Fe0.3?0.5）71.5Y3.5B25 bmg，达到了64 K和高达2.0 mm的临界直径。Co75-xYxB25和（Co0.7Fe0.3）75-xYxB25矫顽力（Hc） (x = 0？5)合金系随Y含量的增加呈相似的v型变化，在x = 3.5时达到最小值，而（Co1yFey）71.5Y3.5B25 （Y = 0 ~ 0.5）合金系随Fe含量的增加而不断升高。合金的Bs随Y的增加而单调降低，随Fe的富集而增加。（Co0.5?0.7Fe0.3?0.5）71.5Y3.5B25 bgs的高Bs值为1.00?1.17 T，低Hc值为5.4?6.4 A/m。bmg的屈服强度高达3978？4152 MPa，塑性应变可达0.9%，维氏硬度为1218？1233也是。Y和Fe影响Co基Co?Fe?Y? GFA、热稳定性和磁性能的可能机制对B金属玻璃进行了讨论。
Soft magnetic Co-based bulk metallic glasses (BMGs) with large supercooled liquid region (?Tx) and high saturation magnetic flux density (Bs) have been developed in a new Co?Fe?Y?B alloy system. Addition of appropriate contents of Y and Fe into a Co75B25 alloy enlarges the ?Tx and improves the glass-forming ability (GFA). ?Tx of 50?64 K and a critical diameter of up to 2.0 mm have been achieved for the (Co0.5?0.7Fe0.3?0.5)71.5Y3.5B25 BMGs. The coercivity (Hc) of Co75-xYxB25 and (Co0.7Fe0.3)75-xYxB25 (x = 0?5) alloy series shows a similar V-shape change with Y content, and gets the minimum at x = 3.5, while that of (Co1yFey)71.5Y3.5B25 (y = 0?0.5) alloys keeps rising with the increase of Fe content. The Bs of the alloys monotonically decreases with more Y addition and increases with enriching of Fe. The (Co0.5?0.7Fe0.3?0.5)71.5Y3.5B25 BMGs exhibit high Bs of 1.00?1.17 T and low Hc of 5.4?6.4 A/m. The BMGs possess high yield strength of 3978?4152 MPa with distinct plastic strain of up to 0.9% and Vickers hardness of 1218?1233 as well. The possible mechanisms of Y and Fe affecting the GFA, thermal stability, and magnetic properties of the Co-based Co?Fe?Y?B metallic glasses have been discussed.