New (Fe0.9Ni0.1)77Mo5P9C7.5B1.5 glassy alloys with enhanced glass-forming ability and large compressive strain
New (Fe0.9Ni0.1)77Mo5P9C7.5B1.5 glassy alloys with enhanced glass-forming ability and large compressive strain
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DOI：
10.1016/j.msea.2012.09.104
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发表时间：
2013-01
期刊：
影响因子：
6.4
通讯作者：
A. Seifoddini;M. Stoica;M. Nili-ahmadabadi;S. Heshmati-Manesh;U. Kühn;J. Eckert
中科院分区：
文献类型：
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作者：
A. Seifoddini;M. Stoica;M. Nili-ahmadabadi;S. Heshmati-Manesh;U. Kühn;J. Eckert
铁基大块金属玻璃通常具有很差的延展性，这限制了它们的工业应用。在这项工作中，我们报道了一种新的大块金属玻璃，具有优异的玻璃形成能力（GFA），通过在FeMoPCB复合合金中添加一定量的Ni来生产。单片1mm直径（Fe0.9Ni0.1） 77mo5p9c7.5 b1.5玻璃合金样品具有最高的压缩变形能力（8.5%），屈服强度为2940MPa，极限强度为3260MPa。变形试样表面出现多条剪切带。适当添加Ni使fe77mo5p9c7.5 b1.5合金组分向共晶方向转变，降低了合金的液相温度，显著提高了合金的GFA和塑性应变。压缩后，试样呈现出韧脆型断裂行为。
Fe-based bulk metallic glasses usually suffer from very poor ductility, which limits their industrial applications. In this work, we report about a new bulk metallic glass with superior glass-forming ability (GFA), produced by addition of a certain amount of Ni to a FeMoPCB composite alloy. The monolithic 1mm diameter (Fe0.9Ni0.1)77Mo5P9C7.5B1.5glassy alloy samples exhibit the highest ever reported compressive deformability (8.5%), together with a yield strength of 2940MPa and an ultimate strength of 3260MPa. Multiple shear bands are observed on the surface of the deformed specimens. The appropriate addition of Ni to the Fe77Mo5P9C7.5B1.5alloy shifts the composition closer to the eutectic, lowers the liquidus temperature, and significantly enhances the GFA and the plastic strain of the alloys. Upon compression, the samples showed a ductile–brittle type fracture behavior.