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首页> 外文期刊>Journal of Materials Research >Fe-Mn-Cr-Mo-(Y,Ln)-C-B (Ln = lanthanides) bulk metallic glasses as formable amorphous steel alloys
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Fe-Mn-Cr-Mo-(Y,Ln)-C-B (Ln = lanthanides) bulk metallic glasses as formable amorphous steel alloys

机译：Fe-Mn-Cr-Mo-（Y，Ln）-C-B（Ln =镧系元素）块状金属玻璃，可成形的非晶态钢合金

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摘要

The glass formability of high-manganese amorphous steel alloys reported earlier by us has been found to improve upon additions of yttrium and lanthanide elements, enabling the formation of bulk glassy samples with diameter thicknesses reaching 7 mm by casting. Based on extensive studies using different Ln additions and systematic measurements of alloy oxygen contents, the intrinsic roles of Y/Ln in attaining good glass formability in both the high-Mn alloys and previously reported high-Cr alloys are revealed. The yield strengths of the non-ferromagnetic glassy alloys obtained are estimated to be three times those of high-strength stainless steel alloys, and high elastic moduli in the range 150-200 GPa are measured. Furthermore, in the supercooled liquid regions, the glassy rods can be bent into various configurations by hand without fracturing. The observed plastic behavior together with the measured high mechanical strengths suggests that the present Fe-based bulk metallic glasses can potentially be developed as formable non-ferromagnetic amorphous steel alloys.
机译：我们发现，早先报道的高锰非晶态钢合金的玻璃成形性可通过添加钇和镧系元素来改善，从而能够通过铸造形成直径达7 mm的块状玻璃状样品。基于使用不同的Ln添加量进行的广泛研究和合金氧含量的系统测量，揭示了Y / Ln在获得高锰合金和先前报道的高铬合金中良好的玻璃成形性方面的内在作用。估计获得的非铁磁性玻璃态合金的屈服强度是高强度不锈钢合金的屈服强度的三倍，并且测得的高弹性模量为150-200 GPa。此外，在过冷的液体区域中，玻璃棒可以用手弯曲成各种形状而不会破裂。观察到的塑性行为以及测得的高机械强度表明，本发明的铁基块状金属玻璃可以潜在地发展为可成形的非铁磁非晶态钢合金。

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