(Fe,Co,Ni)–B–Si–Nb bulk glassy alloy with super-high strength and some ductility
(Fe,Co,Ni)–B–Si–Nb bulk glassy alloy with super-high strength and some ductility
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DOI：
10.1557/jmr.2005.0001
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发表时间：
2005-01
影响因子：
2.7
通讯作者：
B. Shen;A. Inoue
中科院分区：
文献类型：
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作者：
B. Shen;A. Inoue
采用铜模铸造法制备了[（Fe0.8Co0.1Ni0.1）0.75B0.2Si0.05] 96 Nb 4非晶合金棒材，其玻璃转变温度为835 K，过冷液相区为55 K，直径为2 mm。玻璃合金棒表现出超高的真断裂强度4225 MPa的弹性应变0.02和真塑性应变0.005相结合。该超高强合金同时具有1.1T的高磁化强度、3A/m的低磁导率和1 kHz时1.8 × 104的高磁导率。具有一定压缩塑性应变和良好软磁性能的超高强铁基大块非晶合金的成功合成，为铁基大块非晶合金作为新型工程材料和功能材料的发展提供了新的思路。
Glassy [(Fe_0.8Co_0.1Ni_0.1)_0.75B_0.2Si_0.05]_96Nb_4 alloy rods with glass transition temperature of 835 K, followed by a large supercooled liquid region of 55 K were produced in the diameter range up to 2 mm by copper mold casting. The glassy alloy rods exhibit super-high true fracture strength of 4225 MPa combined with elastic strain of 0.02 and true plastic strain of 0.005. The super-high strength alloy simultaneously exhibits high magnetization of 1.1 T, low coercivity of 3 A/m, and high permeability of 1.8 × 104 at 1 kHz. The success of synthesizing a super-high strength Fe-based bulk glassy alloy with some compressive plastic strain and good soft magnetic properties is encouraging for future development of Fe-based bulk glassy alloys as new engineering and functional materials.