TY - JOUR
T1 - Prominent Fe-based bulk amorphous steel alloy with large supercooled liquid region and superior corrosion resistance
AU - Tsai, P.H.
AU - Xiao, A.C.
AU - Li, J.B.
AU - Jang, J.S.C.
AU - Chu, J.P.
AU - Huang, J.C.
PY - 2014/2/15
Y1 - 2014/2/15
N2 - 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.
AB - 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.
KW - Bulk amorphous steel
KW - Corrosion resistance
KW - Metallic glass
KW - Sharpness test
KW - Thermal properties
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U2 - 10.1016/j.jallcom.2013.09.186
DO - 10.1016/j.jallcom.2013.09.186
M3 - RGC 21 - Publication in refereed journal
SN - 0925-8388
VL - 586
SP - 94
EP - 98
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -