新型块体铁基非晶合金的形成与性能  

Formation and Properties of New Bulk Fe-Based Metallic Glasses

作　　者：刘凤娟[1] 逄淑杰[1] 李然[1] 马朝利[1] 张涛[1] 

机构地区：[1]北京航空航天大学,北京100083

出　　处：《稀有金属材料与工程》2008年第A04期733-736,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金项目(50631010);长江学者创新团队发展计划(IRT0512)资助

摘　　要：利用铜模铸造法制备了(Fe100-xCox)74Mo6P10C7.5B2.5(x=0-15)新型块体铁基非晶合金。Fe-Co-Mo-P-C-B系块体非晶合金具有临界直径为4mm的高非晶形成能力,以及维氏硬度为10.6～10.85GPa的高硬度和饱和磁感应强度为0.98～1.07T的优异性能。研究结果表明,非晶合金硬度及饱和磁感应强度都随着Co含量的提高逐渐增加。合金的非晶形成能力则与Co的含量密切相关。适量Co的添加扩大非晶合金的过冷液体区间(ΔTx)及增加γ值,从而提高非晶合金的热稳定性及其非晶形成能力。Bulk （Fe100-xCox）74Mo6P10C7.5B2.5（x=0-15） metallic glasses are synthesized by copper mold casting, which have a critical diameter up to 4 mm, high microhardness of 10.6～10.85 GPa and high saturature magnetization of 0.98～1.07 T. Results show that the microhardness and saturation magnetization increase with Co content increasing. The glass forming ability correlates tightly to the Co content. Proper Co content enlarges the super cooled liquid region and enhances the value which results in enhanced thermal stability of supercooled liquid and high glass forming ability.

关 键 词：铁基非晶合金 铜模铸造 非晶形成能力 热稳定性 软磁性 

分 类 号：TG139.8[一般工业技术—材料科学与工程]