Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 410, Issue -, Pages 20-25Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnoncrysol.2014.12.006
Keywords
Cr-based alloy; Bulk metallic glass; Corrosion; Mechanical properties; Elastic properties
Funding
- National Natural Science Foundation of China [51271008, 51161130526]
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Novel Cr-based Cr30Fe26Co7Mo14C15B6Y2 and Cr45Fe11Co7Mo14C15B6Y2 BMGs with a critical diameter up to 8 mm were developed by copper mold casting. For the CrxFe56 - xCo7Mo14C15B6Y2 (x = 15,30 and 45 at.%) BMGs, chromium is effective on enhancing the corrosion resistance, mechanical properties and elastic moduli, though it decreases the glass forming ability. The Cr-based BMGs exhibit high glass transition temperature of 909-971 K, excellent corrosion resistance in aggressive hydrochloric solution, superior compressive fracture strength up to 4.35 GPa, high Vickers microhardness of 13.87 GPa, and high ratio of hardness to Young's modulus about 0.06, which are advantageous for engineering applications as novel corrosion/wear resistant materials. (C) 2014 Elsevier B.V. All rights reserved.
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