| Zr43Cu50Al7块体非晶合金的结构弛豫和晶化研究 |
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| 引用本文： | 叶斌,熊建钢,李波,李志远.Zr43Cu50Al7块体非晶合金的结构弛豫和晶化研究[J].特种铸造及有色合金,2005,25(7):385-388. |
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| 作者姓名： | 叶斌 熊建钢 李波 李志远 |
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| 作者单位： | 华中科技大学 |
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| 基金项目： | 江西省材料科学与工程中心资助项目 |
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| 摘 要： | 在不同加热速率下应用差示扫描量热法(DSC)研究了Zr43Cu50Al7块体非晶合金的结构弛豫现象和晶化行为,得到了满意的晶化曲线.由晶化曲线得到弛豫峰与玻璃转变温度(Tg)、晶化起始温度(Tx)和晶化峰温度(Tp).Zr43Cu50Al7非晶合金的过冷液相区ΔTx达76.2 K,具有较强的玻璃形成能力.对所得到的弛豫峰作了初步的研究,并运用Kissinger法和Deloy法分别计算出玻璃转变激活能Eg、晶化起始激活能Ec、晶化峰的激活能Ep和晶化阶段激活能Ex.结果表明Zr43Cu50Al7块体非晶合金具有良好的热稳定性.
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| 关 键 词： | 块体非晶合金 结构驰豫 晶化 |
| 文章编号： | 1001-2249(2005)07-0385-04 |
| 修稿时间： | 2005年1月18日 |
Structure Relaxation and Crystallization of Bulk Amorphous Zr43Cu50Al7 Alloy |
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| Ye Bin,Xiong Jiangang,Li Bo,Li Zhiyuan.Structure Relaxation and Crystallization of Bulk Amorphous Zr43Cu50Al7 Alloy[J].Special Casting & Nonferrous Alloys,2005,25(7):385-388. |
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| Authors: | Ye Bin Xiong Jiangang Li Bo Li Zhiyuan |
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| Abstract: | Desirable crystallization curves were obtained by investigating the structure relaxation phenomenon and crystallization behavior of bulk amorphous Zr_(43)Cu_(50)Al_7 alloy by differential scanning calorimetry (DSC) at different rates,in which the relaxation values,glass transition temperature T_g,crystallization initiation temperature T_x and crystallization peak temperature T_p were described.The amorphous alloy possesses a higher glass forming ability with temperature of supercooled liquid region up to 76.2 K.Preliminary approach to the obtained curves was conducted,and the activation energy for T_g,T_x,T_p and phase crystallization E_x were determined by the Kissinger and Deloy method.It was indicated that the obtained amorphous alloy has excellent heat stability. |
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| Keywords: | DSC |
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