Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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Transactions of Nonferrous Metals Society of China

Vol. 17    No. 5    October 2007

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Effect of Al addition on formation and mechanical properties of Mg-Cu-Gd bulk metallic glass
GENG Jia-yuan(耿家源), SUN Yu-feng(孙玉峰), WANG Li-guo(王利国),ZHU Shi-jie(朱世杰), LIU Li-zhao(刘利召), GUAN Shao-kang(关绍康)

School of Materials Science and Engineering, Zhengzhou University,Zhengzhou 450002, China

Abstract:The effect of partial substitution of Al for Cu on the glass forming ability(GFA) and mechanical properties of Mg65Cu25−xAlxGd10 (x=0, 1, 3 and 5, molar fraction, %) alloys were studied by X-ray diffractometry(XRD), differential scanning calorimetry(DSC) and uniaxial compression test. The result reveals that GFA of the alloys changes slightly with increasing x from 0 to 3, and then abruptly decreases with x increasing up to 5. The plasticity can be greatly improved with appropriate substitution of Cu by Al (3%, molar fraction) in Mg65Cu25Gd10 bulk metallic glass, and the resultant fracture strength, total strain to failure, and plastic strain are 898 MPa, 2.19% and 0.2%, respectively.


Key words: mg-based bulk metallic glasses; glass forming ability; mechanical properties; plastic strain

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

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