Prominent Fe-based bulk amorphous steel alloy with large supercooled liquid region and superior corrosion resistance

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

24 Scopus Citations
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  • P.H. Tsai
  • A.C. Xiao
  • J.B. Li
  • J.S.C. Jang
  • J.P. Chu


Original languageEnglish
Pages (from-to)94-98
Journal / PublicationJournal of Alloys and Compounds
Online published10 Oct 2013
Publication statusPublished - 15 Feb 2014
Externally publishedYes


A prominent Fe-base bulk amorphous steel (BAS) alloy which presents high glass forming ability (GFA), good corrosion resistance, superior mechanical properties and relative lower cost. The Fe41Cr15Co 7Mo14C21-xBxY2 (x = 5-10) BAS rods with a diameter of 2-6 mm, can be fabricated by the suction casting method. The highest GFA value can be obtained by adjusting the ratio of boron/carbon, reaching to the value of γ = 0.4 and γm = 0.69 for the alloy composition of Fe41Ce15Co 7Mo14C12B9Y2. Meanwhile, this alloy also presents very large supercooled liquid region up to 81 K, favourable to be fabricated into micro-surgery tools by thermoplastic forming. In addition, the Fe-base BAS alloy exhibits extremely high hardness around 1200 Hv. The anodic polarization measurement of the Fe-based BAS exhibits a higher corrosion resistance than 304 SS and 316 SS in the Hank's balanced salt solution. The sharpness test results reveal that the Fe-based BAS blade exhibits much higher sharpness because of its lower surface roughness and higher hardness. Moreover, the Fe-base BAS blade presents much better durability on cutting testing, it can remain relatively sharper edge-tip with a low blade sharpness index (BSI) value of 0.38 (in comparison with the BSI value of 0.59 for commercial blades) after the cutting testing over 50 cm length.

Research Area(s)

  • Bulk amorphous steel, Corrosion resistance, Metallic glass, Sharpness test, Thermal properties

Citation Format(s)