Fe–C micro-alloying effect on properties of Zr_(53)Al_(11.6)Ni_(11.7)Cu_(23.7) bulk metallic glass
Fe–C micro-alloying effect on properties of Zr_(53)Al_(11.6)Ni_(11.7)Cu_(23.7) bulk metallic glass
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Fe·C微合金化对Zr_(53)Al_(11.6)Ni_(11.7)Cu_(23.7)块体金属玻璃性能的影响
DOI：
10.1016/s1003-6326(21)65690-x
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发表时间：
2021
影响因子：
4.5
通讯作者：
Yang Qing
中科院分区：
文献类型：
--
作者：
Ding Dawei;Tan Jing;Cai Anhui;Liu Yong;Wu Hong;An Qi;Li Pengwei;Zhang Yan;Yang Qing
(Zr_（53）Al_（11.6）Ni_（11.7）Cu_（23.7））_（1-x）（Fe_（77.1）C_（22.9））_x（x=0-2.2，at.%）采用铜模吸铸法制备了大块非晶合金。系统地研究了它们的玻璃形成能力和物理化学性能。玻璃形成能力随x的增加先提高，当x超过0.44at.%后下降。Fe-C微合金化使合金的玻璃化转变温度和晶化温度均有所提高，过冷液相区变窄。当x达到1.32at.%时，硬度、屈服强度、断裂强度和塑性先增大后减小。BMG（x= 1.32at.%）的塑性是无铁无碳BMG的6倍。此外，Fe-C微合金化使腐蚀电位略有降低，腐蚀电流密度增加。随着Fe和C含量的增加，点蚀现象越来越严重。
(Zr_(53)Al_(11.6)Ni_(11.7)Cu_(23.7))_(1–x)(Fe_(77.1)C_(22.9))_x (x=0–2.2, at.%) bulk metallic glasses (BMGs) were prepared by copper mold suction casting method. Their glass forming ability and physical and chemical properties were systematically investigated. The glass forming ability is firstly improved with increasing x, and then decreased when x exceeds 0.44 at.%. Both glass transition temperature and crystallization temperature are increased, while the supercooled liquid region is narrowed, with Fe–C micro-alloying. The hardness, yielding and fracture strength, and plasticity firstly increase and then decrease when x reaches up to 1.32 at.%. The plasticity of the BMG (x=1.32 at.%) is six times that of the Fe-free and C-free BMG. In addition, by the Fe–C micro-alloying, the corrosion potential is slightly decreased, while the corrosion current density increases. The pitting corrosion becomes increasingly serious with the increase of Fe and C content.