ISSN: 1002-0071    Imprint: Chinese Materials Research Society
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Bangshao Dong,Shaoxiong Zhou,Jingyu Qin,Ying Li,Hui Chen,Yanguo Wang.[J].自然科学进展英文版,2018,28(6):696-703
The hidden disintegration of cluster heterogeneity in Fe-based glass-formingalloy melt
  
DOI:
中文关键词:  
英文关键词:Fe-based glass-forming alloys Alloy melt Cluster heterogeneity Structural transition Viscosity
基金项目:
Author NameAffiliation
Bangshao Dong Advanced Technology & Materials Co., Ltd., Central Iron & Steel Research Institute, Beijing 100081, China 
Shaoxiong Zhou Advanced Technology & Materials Co., Ltd., Central Iron & Steel Research Institute, Beijing 100081, China 
Jingyu Qin Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan 250061, China 
Ying Li Advanced Technology & Materials Co., Ltd., Central Iron & Steel Research Institute, Beijing 100081, China 
Hui Chen Advanced Technology & Materials Co., Ltd., Central Iron & Steel Research Institute, Beijing 100081, China 
Yanguo Wang Nanjing Tengyuan Soft Magnetics Co. Ltd., Nanjing 211316, China 
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中文摘要:
      
英文摘要:
      The evolution of liquid metal at high temperature is known much less than their solid states. This is partially due to that the message concerning clusters, metastable phase or heterogeneity in liquid is usually too slight to be traced. Here, we shed some light on the nature of structural evolution of Fe-based glass-forming alloy during overheating process by the investigation of high-temperature melt viscometry and first principles simulations. It was found that a structural transition around 1400℃ occurred in the melts of initial homogeneous ingot, heterogeneous ingot and amorphous ribbons jointly, and was confirmed by the results from differential scanning calorimeter (DSC), and ab initio molecular dynamics (AIMD). Combining these results with Fe-Si-B ternary phase diagram and the melting characteristics of Fe-B compounds, it is safe to conclude that the disintegration of Fe2Btype clusters to Fe3B-type clusters leads to the observed transition. These results offer a significant reference for the preparation and property control of Fe-based amorphous alloys.
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