CAJ | 학술논문

以铝‐镓‐镁合金为原料，采用铸造法制备了一种可降解的铝合金材料，并进行了热处理。通过XRD和SEM 分析了热处理对该铝合金的组成、微观组织和腐蚀行为的影响。结果表明：该铝合金主要由铝基体和含镁合金相组成，经热处理后，合金相分解，形状由骨骼状变成哑铃状或圆形，体积逐渐减小；经500℃固溶3 h后，样品较铸态更易遇水激活，但腐蚀在其表面扩展速度变慢；点蚀在合金相与基体的界面处形成，并沿表面扩展。
이려‐가‐미합금위원료，채용주조법제비료일충가강해적려합금재료，병진행료열처리。통과XRD화SEM 분석료열처리대해려합금적조성、미관조직화부식행위적영향。결과표명：해려합금주요유려기체화함미합금상조성，경열처리후，합금상분해，형상유골격상변성아령상혹원형，체적축점감소；경500℃고용3 h후，양품교주태경역우수격활，단부식재기표면확전속도변만；점식재합금상여기체적계면처형성，병연표면확전。
A degradable Al alloy was fabricated successfully using Ga ,In ,Sn and Al‐Mg mas‐ter alloy as raw materials through casting ,and heat treatment subsequently .The influences on compositions ,microstructure and corrosion behavior of heat treatment were investigated by XRD and SEM in the study .The results indicated that the prepared Al alloy mainly con‐sisted of Al matrix and Mg2Sn .The alloy phase dissolved ,and the shape of which become from skeleton to dumbbell‐like or roundness ,the volume decreased gradually by heat treat‐ment .The sample of solution heat treated at 500 ℃ for 3 h possessed a superior activation , but a sluggish expansion of corrosion compared to as‐cast .The pit corrosion produced at the interface of alloy phase and matrix ,and then expanded along the matrix ..