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

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Title:	Prominent Fe-based bulk amorphous steel alloy with large supercooled liquid region and superior corrosion resistance
Authors:	鄭憲清;Tsai, P.H.;Xiao, A.C.;Li, J.B.;Jang, J.S.C.;Chu, J.P.;Huang, J.C.
Contributors:	工學院材料科學與工程研究所
Keywords:	Alloys;Applied sciences;Austenitic stainless steels;Blades (cutting);Bulk amorphous steel;Corrosion;Corrosion prevention;Corrosion resistance;Cross-disciplinary physics: materials science;rheology;Cutting;Exact sciences and technology;Glasses (including metallic glasses);Materials science;Metallic glass;Metals. Metallurgy;Physics;Sharpness;Sharpness test;Specific materials;Steels;Thermal properties
Date:	2014-01-01
Issue Date:	2026-04-23 11:42:32 (UTC+8)
Publisher:	Elsevier BV;Kidlington: Elsevier B.V
Abstract:	摘要： SEM images of the surface profile on the blade edge-tip for (a) commercial blade and (b) Fe-B9 BAS blade. SEM images of blade edge-tip for (c) as-received commercial blade, (d) commercial blade after cutting test of 25cm length, (e) as-prepared Fe-B9 BAS blade, and (f) Fe-B9 BAS blade after cutting test of 25cm length. •An Fe-based BAS with high GFA and large supercooled region has been successfully produced.•Fe-B9 BAS exhibits higher corrosion resistance than 304 SS and 316 SS in Hank’s solution.•Fe-B9 BAS blade exhibits much higher sharpness than the commercial one.•Fe-B9 BAS blade presents much better durability than the commercial one on cutting test. 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 Fe41Cr15Co7Mo14C21−xBxY2 (x=5–10) BAS rods with a diameter of 2–6mm, 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 Fe41Ce15Co7Mo14C12B9Y2. Meanwhile, this alloy also presents very large supercooled liquid region up to 81K, favourable to be fabricated into micro-surgery tools by thermoplastic forming. In addition, the Fe-base BAS alloy exhibits extremely high hardness around 1200Hv. 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 50cm length. 出版者： Kidlington: Elsevier B.V 出版日期： 2014-02-01 出處： Journal of alloys and compounds, 2014-02, Vol.586, p.94-98 版權： 2013 Elsevier B.V. 版權： 2015 INIST-CNRS 識別號： ISSN: 0925-8388 識別號： EISSN: 1873-4669 識別號： DOI: 10.1016/j.jallcom.2013.09.186
Appears in Collections:	[Institute of Materials Science and Engineering] journal & Dissertation

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