非晶合金冲击韧性研究现状及展望

Research status and prospect of impact toughness of bulk metallic glasses

非晶合金因其独特的内部结构,具有优异的力学性能。例如:高强度、高硬度、大弹性极限等,是一种先进的结构工程材料。材料的冲击韧性能够反映材料内部的细微缺陷和抗冲击性能,是材料强度和塑性的综合表征,是一种重要的力学指标。本文对非晶合金冲击韧性研究现状进行综述,介绍试样尺寸、服役温度、合金成分、热处理等因素对非晶合金冲击韧性的影响,总结了改善非晶合金冲击韧性的措施,并对今后非晶合金冲击韧性研究值得关注的问题进行展望。

Due to their unique amorphous structure,the metallic glasses possess excellent mechanical properties(e.g.high strength,high hardness,large elastic limit,etc.),which make them potential candidates as advanced structural engineering materials.The impact toughness,which is one of the most important mechanical property indexes and reflects the impact resistance of materials,should be paid attention to during the service process.In this article,the research progress of impact toughness of metallic glasses was reviewed.The effects of sample size,service temperature,alloy composition and heat treatment on impact toughness of metallic glasses were introduced.The strategies to improve the impact toughness of metallic glasses were also presented.Finally the future research issues of impact toughness of metallic glasses were prospected.