机械合金化Zr-Al-Ni-Cu-Ag非晶合金的晶化行为
Crystallization of mechanically alloyed amorphous Zr-Al-Ni-Cu-Ag alloy
查看参考文献16篇
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文摘
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研究了机械合金化非晶态Zr_(65)Al_(7.5)Ni_(10)Cu_(7.5)Ag_(10)合金的晶化过程。由于存在扩散不均匀区，机械合金化非晶合金在深过冷液相区的退火组织不同于快淬合金。在深过冷液相区退火，析出二十面体准晶相及一些未知相；在靠近第一个放热峰的温度退火，析出Zr_2Cu相；第二个放热峰对应残余非晶相及准晶相向Zr_2Ni、Zr_2Al_3的转变。 |
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其他语种文摘
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The multicomponent Zr-Al-Ni-Cu-Ag amorphous alloy powders were obtained by mechanical alloying from the elemental constituents. The crystallization of mechanical alloyed amorphous Zr-based alloy was studied by DSC, X-ray diffraction. After isothermally annealed at a temperature in the supercooled liquid region, the icosahedral quasicrystal and some unknown phases precipitated in the Zr_(65)Al_(7.5)Ni_(10)Cu_(7.5)Ag_(10) amorphous alloys. After annealing at 712K, Zr_2Cu phase precipitated. After the samples were annealed at 758K, the Zr_2Cu phase were found as a single precipitation phase. The transformation of the amorphous alloy upon heating can be represented as follows: amorphous phase→icosahedral phase+amorphase→+amorphous phase→ZrCu + Zr_2Cu + Zr_2Ni + Zr_2Al_3. |
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来源
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材料研究学报
,2002,16(1):9-12 【核心库】
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关键词
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机械合金化
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地址
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中国科学院金属研究所, 沈阳材料国家（联合）实验室
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1005-3093 |
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学科
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一般工业技术 |
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基金
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国家973计划
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文献收藏号
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CSCD:959175
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