| Effect of Al addition on formation and mechanical properties of Mg-Cu-Gd bulk metallic glass |
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| 作者姓名： | 耿家源 孙玉峰 王利国 朱世杰 刘利召 关绍康 |
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| 作者单位： | School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, China |
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| 摘 要： | 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 diffi-actometry（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 A1 （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.
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| 关 键 词： | 机械力学 Mg-Cu-Gd合金 金属 玻璃 |
| 收稿时间： | 19 January 2007 |
| 修稿时间： | 2007-01-19 |
Effect of Al addition on formation and mechanical properties of Mg-Cu-Gd bulk metallic glass |
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| GENG Jia-yuan,SUN Yu-feng,WANG Li-guo,ZHU Shi-jie,LIU Li-zhao,GUAN Shao-kang.Effect of Al addition on formation and mechanical properties of Mg-Cu-Gd bulk metallic glass[J].Transactions of Nonferrous Metals Society of China,2007,17(5):907-912. |
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| Authors: | GENG Jia-yuan SUN Yu-feng WANG Li-guo ZHU Shi-jie LIU Li-zhao GUAN Shao-kang |
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| Affiliation: | School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, China |
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| Abstract: | The effect of partial substitution of A1 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. |
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| Keywords: | mg-based bulk metallic glasses glass forming ability mechanical properties plastic strain |
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