Effect of heat treatment on mechanical and biodegradable properties of an extruded ZK60 alloy  

作　　者：Junxiu Chen Lili Tan Ke Yang 

机构地区：[1]Institute of Metal Research,Chinese Academy of Sciences,72 Wenhua Road,Shenyang 110016,China

出　　处：《Bioactive Materials》2017年第1期19-26,共8页生物活性材料（英文）

基　　金：This work was supported by the National Basic Research Program of China(973 Program)(No.2012CB619101);National Natural Science Foundation of China(No.81401773);National High Technology Research and Development Program of China(863 Program,No.2015AA033701).

摘　　要：ZK60 magnesium alloy possess good mechanical properties and is a potential biodegradable material.But its high degradation rate is not desirable.In this study the effect of heat treatment on the biodegradable property of ZK60 alloy was investigated.T5 treated,T6 treated,as-cast and as-extruded ZK60 alloys were studied.Microstructure characterization,electrochemical measurement and immersion test were carried out.The results showed that both the mechanical properties and degradation behavior were improved after T5 treatment due to the formation of small and uniformly distributed MgZn phases.The as-cast alloys also exhibited good corrosion resistance.However,the as-extruded and T6 treated samples were severely corroded due to the formation of large amounts of second phases accelerating the corrosion rate owing to the galvanic corrosion.The corrosion resistance of ZK60 alloy was as following:T5 treated>as-cast>T6 treated>as-extruded.

关 键 词：ZK60 alloy Heat treatment Second phase CORROSION 

分 类 号：TG1[金属学及工艺—金属学]