Remarkable effect of minor boron doping on the formation of the largest size Ni-rich bulk metallic glasses

• Published in: Scripta materialia Vol. 60; no. 11; pp. 925 - 928
• Main Authors: Zeng, Yuqiao, Inoue, Akihisa, Nishiyama, Nobuyuki, Chen, Mingwei
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-06-2009
• Subjects: Bulk amorphous materials; Fragility; Nickel alloys; Quenching; Thermodynamics; Thermodynamics; Nickel alloys; Bulk amorphous materials; Quenching; Fragility
• ISSN: 1359-6462; 1872-8456
• DOI: 10.1016/j.scriptamat.2008.12.044

We report the formation of a Ni-rich bulk metallic glass with a diameter of 15
mm, the largest size known in Ni-rich alloys. It was found that the minor addition of boron plays a critical role in the dramatic improvement of glass-forming ability of Ni-rich Ni–Pd–P alloy. Thermal and chemical analyses suggest that the improved glass-forming ability is associated with the decrease in fragility and the impurity scavenging.