(1. 華中科技大學 材料成形與模具技術國家重點實驗室，武漢 430074；
2. 湖南大學 汽車車身先進設計制造國家重點實驗室，長沙 410082)
摘 要: 非晶合金因其獨特的內部結構，具有優(yōu)異的力學性能。例如：高強度、高硬度、大彈性極限等，是一種先進的結構工程材料。材料的沖擊韌性能夠反映材料內部的細微缺陷和抗沖擊性能，是材料強度和塑性的綜合表征，是一種重要的力學指標。本文對非晶合金沖擊韌性研究現狀進行綜述，介紹試樣尺寸、服役溫度、合金成分、熱處理等因素對非晶合金沖擊韌性的影響，總結了改善非晶合金沖擊韌性的措施，并對今后非晶合金沖擊韌性研究值得關注的問題進行展望。
關鍵字: 非晶合金；沖擊韌性；韌脆轉變；尺寸效應；非晶復合材料
（1. State Key Laboratory of Materials Progress and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China;
2. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China）
Abstract: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.
Key words: metallic glasses; impact toughness; ductile to brittle transition; size effect; metallic glasses composites
