Effect of Sn addition on thermal stability of (Zr52.5Ti5Al10Ni14.6Cu17.9)(100-x)Snx alloys
来源期刊：中国有色金属学报(英文版)2003年第z1期
论文作者：SUN Jian-fei(孙剑飞) SHEN Jun(沈 军) GAO Yui-lai(高玉来) ZHU Zhen-ye(朱振业) XING Da-wei(邢大伟) WANG Gang(王 刚) CHEN De-min（陈德民）
文章页码：64 - 67
Key words：bulk metallic glass; DSC; thermal stability; supercooled liquid region
Abstract: The effect of Sn addition on the thermal stability of (Zr52.5Ti5Al10Ni14.6Cu17.9)(100-x)Snx(x=1, 2, 3, 4 and 5) bulk metallic glass was studied by means of differential scanning calorimetry (DSC). The experimental results show that all of the characteristic temperatures including glass transition temperature Tg, onset crystallization temperature Tx, peak temperatures Tp1and Tp2, and the supercooled liquid region ΔTx, increase to some extent. Tx can be augmented remarkably when the Sn addition is 3%, which may be attributed to the suppression of the first stage of the crystallization, and therefore, the supercooled liquid region is largely widened. Consequently, the thermal stability of the Zr52.5Ti5Al10Ni14.6Cu17.9 bulk metallic glass can be increased by the introduction of Sn. Enhancing the complexity of the components of some bulk metallic glasses is a useful method to improve their thermal stabilities.
SUN Jian-fei(孙剑飞), SHEN Jun(沈 军), GAO Yui-lai(高玉来),ZHU Zhen-ye(朱振业), XING Da-wei(邢大伟), WANG Gang(王 刚),CHEN De-min（陈德民）
(School of Materials Science and Engineering,
Harbin Institute of Technology, Harbin 150001, China)
Abstract:The effect of Sn addition on the thermal stability of (Zr52.5Ti5Al10Ni14.6Cu17.9)(100-x)Snx(x=1, 2, 3, 4 and 5) bulk metallic glass was studied by means of differential scanning calorimetry (DSC). The experimental results show that all of the characteristic temperatures including glass transition temperature Tg, onset crystallization temperature Tx, peak temperatures Tp1and Tp2, and the supercooled liquid region ΔTx, increase to some extent. Tx can be augmented remarkably when the Sn addition is 3%, which may be attributed to the suppression of the first stage of the crystallization, and therefore, the supercooled liquid region is largely widened. Consequently, the thermal stability of the Zr52.5Ti5Al10Ni14.6Cu17.9 bulk metallic glass can be increased by the introduction of Sn. Enhancing the complexity of the components of some bulk metallic glasses is a useful method to improve their thermal stabilities.
Key words:bulk metallic glass; DSC; thermal stability; supercooled liquid region
