Zr41Ti14Cu12.5Ni10Be22.5块体非晶合金结构自由体积周围化学环境的研究

Study of Chemical Ordering around the Structural Free Volume in Bulk Amorphous Zr41Ti14Cu12.5Ni10Be22.5 Alloys

摘要:

采用X射线衍射（XRD）、正电子湮没技术(PAT)-多普勒展宽谱，研究Zr41Ti14Cu12.5Ni10Be22.5块体非晶合金及其过冷液相区结构自由体积周围的元素分布。结果表明：原始制备的Zr41Ti14Cu12.5Ni10Be22.5块体非晶合金其结构自由体积周围主要富集Zr原子，在过冷液相区（T＝400 ℃）等温退火后，在该合金结构自由体积周围探测到Zr、Ti和Be原子。

Abstract:

Element distribution of the bulk amorphous Zr41Ti14Cu12.5Ni10Be22.5 alloy and of the zone around the structural free volume in the undercooled liquid region was investigated by X-ray diffraction (XRD) and positron annihilation techniques(PAT)-Doppler broadening spectrum. Results show that the structural free volumes in the initially prepared Zr41Ti14Cu12.5Ni10Be22.5 alloy were mainly surrounded by Zr atoms. After the alloy was annealed at 400 ℃ in the undercooled liquid region, both atoms Ti and Be together with Zr were detected to surround the structural free volumes.