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Low-temperature mechanical properties of Ce68Al10Cu20Co2 bulk metallic glass

机译：Ce 68 Al 10 Cu 20 Co 2 大块金属玻璃的低温力学性能

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Although it is well known that traditional metals and alloys will become brittle at low temperatures, the effect of low temperature on the mechanical properties of bulk metallic glasses (BMGs) is yet to be fully understood. In this research, the mechanical properties of Ce68Al10Cu20Co2 BMG are investigated at low temperatures. It is found that the yield strength of the Ce-based BMG increases significantly with the decrease of temperature. The elastic moduli of the BMG also increase monotonically with the drop of temperature, indicating the continuous stiffening of the BMG, while both Poisson's ratio and global plasticity decline at low temperatures. It is considered that the stiffer atomic bonds of the Ce-based BMG at low temperatures result in the increase of strength, and the higher energy required for nucleation of shear bands also leads to the increase in yield strength.View full textDownload full textKeywordsbulk metallic glass, mechanical properties, fracture strength, low temperatureRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/09500839.2010.529088
机译：尽管众所周知，传统的金属和合金在低温下会变脆，但低温对块状金属玻璃（BMG）的机械性能的影响尚待充分了解。本文研究了低温下Ce 68 Al 10 Cu 20 Co 2 BMG的力学性能。发现随着温度的降低，Ce基BMG的屈服强度显着增加。随着温度的下降，BMG的弹性模量也单调增加，表明BMG连续不断地变硬，而低温下的泊松比和整体可塑性均下降。人们认为，铈基BMG在低温下更坚硬的原子键会导致强度增加，而剪切带成核所需的更高能量也会导致屈服强度增加。查看全文下载全文关键词金属玻璃，机械性能，断裂强度，低温相关变量var addthis_config = {ui_cobrand：“泰勒和弗朗西斯在线”，servicescompact：“ citlikelike，netvibes，twitter，technorati，delicious，linkedin，facebook，stumbleupon，digg，google，更多”，pubid： “ ra-4dff56cd6bb1830b”};添加到候选列表链接永久链接http://dx.doi.org/10.1080/09500839.2010.529088

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