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论文类型： 期刊论文

发表时间： 2010-04-01

发表刊物： MATERIALS TRANSACTIONS

收录刊物： SCIE、EI、Scopus

卷号： 51

期号： 4,SI

页面范围： 826-829

ISSN号： 1345-9678

关键字： glassy alloy; copper-based alloy; thermal stability; glass-forming ability; mechanical property

摘要： A new Cu-based Cu-Zr-Al glassy alloy has been found to exhibit very high glass-forming ability, wide supercooled liquid region and high fracture strength. The addition of Al to a binary eutectic Cu55Zr45 alloy significantly increases the stabilization of supercooled liquid as well as glass-forming ability in Cu55-xZr45Alx (x = 0 to 10) alloy series. The largest supercooled liquid region of 80 K, reduced glass transition temperature of 0.60 and gamma value of 0.417 are simultaneously obtained for a ternary eutectic Cu47Zr45Al8 alloy, which can fabricate fully glassy sample with critical diameters up to 15 mm by copper mold casting. The bulk glassy alloy also exhibits high compressive fracture strength of over 1900 MPa and the high Young's modulus above 100 GPa. [doi:10.2320/matertrans.MBW200928]