| 非晶态合金条带高压复合法制备大块非晶态合金 |
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| 引用本文： | 周飞,卢柯.非晶态合金条带高压复合法制备大块非晶态合金[J].材料研究学报,1997,11(2):127-130. |
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| 作者姓名： | 周飞 卢柯 |
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| 作者单位： | 中国科学院金属研究所快速凝固非平衡合金国家重点实验室 |
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| 基金项目： | 国家自然科学基金!59431021 |
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| 摘 要： | 介绍一种制备大块非晶态合金的新方法－快淬非晶态合金和条带高压复合法，其原理是利用高压抑制非晶态合金的晶化过程，从而在较宽的温区通过大量均匀的粘滞流变实现快淬非晶态合金条带的全致密复合。
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| 关 键 词： | 非晶态合金 高压复合 粘滞流变 |
| 收稿时间： | 1997-04-25 |
| 修稿时间： | 1997-04-25 |
A NEW APPROACH TO SYNTHESIS OF BULK AMORPHOUS ALLOYS BY USING HIGH-PRESSURE COMPACTION OF THE MELT-SPUN AMORPHOUS RIBBONS |
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| ZHOU Fei,LU Ke.A NEW APPROACH TO SYNTHESIS OF BULK AMORPHOUS ALLOYS BY USING HIGH-PRESSURE COMPACTION OF THE MELT-SPUN AMORPHOUS RIBBONS[J].Chinese Journal of Materials Research,1997,11(2):127-130. |
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| Authors: | ZHOU Fei LU Ke |
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| Affiliation: | ZHOU Fei,LU Ke(State Key Lab for RSA,Institute of Metal Research,Chinese Academy of Sciences,Shenyang ) |
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| Abstract: | A hot high-pressure compaction of melt--spun amorphous metallic ribbons which produces fully-densed bulk amorphous samples, was developed by using an amorphous Ni69Cr7Fe2.5Si8B13.5 alloy ribbons as a model material. Under a pressure of 1.5GPa, the crystallization onset temperature was found to be increased by about 40K, resulting in a widened supercooled liquid temperature region of about 60K beneath the onset of crystallization. Consolidation of the amorphous ribbons in temperatures of 733~ 773 K with a pressure higher than 1.5GPa yielded bulk amorphous compacts with full density (>99% of the theoretical value). This achievement was attributed to the significant homogenous viscous flow of materials in the supercooled liquid state. |
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| Keywords: | bulk amorphous alloys high-pressure compaction viscous flow |
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