Formation of Nanocrystalline Globules and Metallic Glass in Fe70−xCuxZr10B20 (x=0–70) Alloys
Formation of Nanocrystalline Globules and Metallic Glass in Fe70−xCuxZr10B20 (x=0–70) Alloys
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DOI：
10.2320/matertrans.47.1105
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发表时间：
2006-04
影响因子：
1.2
通讯作者：
T. Nagase;A. Yokoyama;Y. Umakoshi
中科院分区：
文献类型：
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作者：
T. Nagase;A. Yokoyama;Y. Umakoshi
研究了单辊熔体旋压快速凝固Fe70-xCuxZr10B20(x=0，10，20，30，35，60和70)合金薄带的显微组织。尽管Fe-Cu原子对具有正的混合热，但在Fe-Cu-Zr-B薄带中形成了金属玻璃。在Fe60Cu10ZR10B20和Fe50Cu20ZR10B20合金中形成了分散在Fe-Zr-B基金属玻璃中的FCC-Cu纳米晶球。纳米乳状结构中的球状颗粒尺寸随铜浓度的增加而增大。在Fe35Cu35ZR10B20和Fe10Cu60ZR10B20合金中，形成了由富Fe相和富铜晶相组成的缠绕大理石状双重结构。在Fe-Cu基合金中添加ZR和B会在快速凝固的快速凝固薄带中形成金属玻璃和独特的凝固组织。
The microstructure in rapidly-solidified Fe 70-x Cu x Zr 10 B 20 (x = 0, 10, 20, 30, 35, 60 and 70) alloy ribbons prepared by single-roller melt-spinning method was examined. In spite of the positive heat of mixing in Fe-Cu atom pair, metallic glass was formed in Fe-Cu-Zr-B ribbons. F.c.c.-Cu nano crystalline globules dispersed in Fe-Zr-B based metallic glass was formed in Fe 60 Cu 10 Zr 10 B 20 and Fe 50 Cu 20 Zr 10 B 20 alloys. Size of the globules in nano-emulsion structure increased with increasing Cu concentration. In Fe 35 Cu 35 Zr 10 B 20 and Fe 10 Cu 60 Zr 10 B 20 alloys, an entangled marble-like duplex structure composed of Fe-rich and Cu-rich crystalline phases was formed. Zr and B additions in Fe-Cu based alloys cause the formation of metallic glass and unique solidification structures in rapidly solidified melt-spun ribbons.