搅拌摩擦加工AZ31镁合金在NaCl溶液中的腐蚀特征  

The corrosion characteristic of friction stir processed AZ31magnesium alloy in NaCl solution

作　　者：吴红辉[1] 袁鸽成[1] 张普[1] 袁潜[1] 秦典成[1] 

机构地区：[1]广东工业大学材料与能源学院,广东广州510006

出　　处：《材料研究与应用》2013年第2期117-121,共5页Materials Research and Application

基　　金：广东省重大科技专项(2008A090300004);广东省教育厅211工程学科建设项目(412110903)

摘　　要：研究了搅拌摩擦加工镁合金FSP-AZ31及其母材AZ31在3.5%的NaCl溶液中的腐蚀特征.结果表明:在含Cl-溶液中,与母材AZ31相比,FSP-AZ31合金的腐蚀失重速率较小;两者的腐蚀机制均为点蚀,但FSP-AZ31的点蚀程度较轻;经搅拌摩擦加工后的FSP-AZ31合金中形成的细小等轴晶及第二相的固溶,是其耐蚀性能提高的主要原因.The corrosion behavior of fri AZ31 in 3.5% NaCl solution was studi AZ31 is lower compared with the base curred in the surface of both Mg-alloys and solid solution of the second phase reason for the increase of the corrosion ction stir processed magnesium alloy FSP-AZ31 and the ed. The results show that the corrosion rate of weight 1 metal AZ31in the solution containing chloride ion. The , while FSP-AZ31 is lesser than metal AZ31. Small equi after friction stir processing forming in the FSP-AZ31 resistance. base OSS of metal FSP- pitting oc- axed grains is the main

关 键 词：搅拌摩擦加工 AZ31镁合金 腐蚀 

分 类 号：TG178[金属学及工艺—金属表面处理]