Microalloying Al alloys with Sc:a review  

作　　者：Jin-Yu Zhang Yi-Han Gao Chong Yang Peng Zhang Jie Kuang Gang Liu Jun Sun 

机构地区：[1]State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an 710049,China

出　　处：《Rare Metals》2020年第6期636-650,共15页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51621063,51625103,51722104,51790482,and 51761135031);the Program of the Ministry of Education of China for Introducing Talents of Discipline to Universities(No.BP2018008);supported by the International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technologies。

摘　　要：As a kind of important light alloys,the Al alloys exhibit mechanical properties that are closely related to the microstructures.Changing the main alloying elements and adjusting heat treatments are usually approaches to tune the microstructure and hence artificially control the mechanical properties.However,the windows for the two approaches have become quite narrow,after extensive studies in the last half of century.Microalloying has become the most promising strategy to further modify the microstructure and improve the mechanical properties of Al alloys,among which the element of scandium(Sc)is especially powerful.In this paper,the recent progresses in Al alloys microalloyed with Sc are briefly reviewed,focusing on the microstructural characterization,strengthening response,and underlying mechanisms.The possible key research points are also proposed for the further development of Al alloys microalloyed with Sc and other rare earth elements.

关 键 词：Al alloys Microalloying effect SCANDIUM Mechanical properties 

分 类 号：TG146.21[一般工业技术—材料科学与工程]