邓彬,李庆芬,吴远志,刘超,叶拓,刘伟,刘安民

• 1:湖南工学院汽车零部件技术研究院
• 2:湖南工学院机械工程学院

摘要(Abstract)：

利用光学显微镜、扫描电镜及电子背散射衍射仪等测试手段研究了轧制温度对固溶态AZ31镁合金显微组织的影响,采用浸泡失重实验和电化学测试等研究了合金在3.5 mass%NaCl溶液中的腐蚀行为。结果表明:轧制温度在250～300℃时,随着轧制温度的升高,合金的动态再结晶程度与均匀性提高,腐蚀速率降低。当轧制温度为300℃时,合金得到了均匀的再结晶晶粒,浸泡12天的平均腐蚀速率为1.37×10~(-3) g·cm~(-2)·d~(-1),呈现均匀腐蚀形貌,耐腐蚀性能最优。当轧制温度为350～400℃时,出现了动态再结晶晶粒长大现象,造成随着轧制温度的升高而腐蚀速率加快的情况。

关键词(KeyWords)： 镁合金;轧制温度;再结晶晶粒;耐腐蚀性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52171115);; 湖南省自科基金项目(2019JJ30009);; 湖南省教育厅科学研究项目(20C0567,19C0508);; 衡阳市科技计划项目基础研究专项(202002042096)

作者(Author): 邓彬,李庆芬,吴远志,刘超,叶拓,刘伟,刘安民

DOI: 10.13289/j.issn.1009-6264.2021-0203

参考文献(References)：

• [1] 焦迪，王萍.热处理工艺对Mg-Gd-Y合金组织及耐腐蚀性能的影响[J].材料热处理学报，2020,41(9):59-66.JIAO Di,WANG Ping.Effect of heat treatment process on microstructure and corrosion resistance of Mg-Gd-Y alloy[J].Transactions of Materials and Heat Treatment,2020,41(9):59-66.
• [2] 丁文江，吴玉娟，彭立明，等.高性能镁合金研究及应用的新进展[J].中国材料进展，2010,29(8):37-45.DING Wen-jiang,WU Yu-juan,PENG Li-ming,et al.Research and application development of advanced magnesium alloys[J].Materials China,2010,29(8):37-45.
• [3] Esmaily M,Svensson J E,Fajardo S,et al.Fundamentals and advances in magnesium alloy corrosion[J].Progress in Materials Science,2017,89:92-193.
• [4] 张帆，毕广利，李元东，等.固溶处理对Mg-Dy-Zn合金显微组织和腐蚀性能的影响[J].材料热处理学报，2015,36(4):85-92.ZHANG Fan,BI Guang-li,LI Yuan-dong,et al.Effect of solution treatment on microstructure and corrosion properties of Mg-Dy-Zn alloy[J].Transactions of Materials and Heat Treatment,2015,36(4):85-92.
• [5] Gusieva K,Davies C,Scully J R,et al.Corrosion of magnesium alloys:the role of alloying[J].International Materials Reviews,2015,60(3):169-194.
• [6] 任伊宾，黄晶晶，杨柯，等.纯镁的生物腐蚀研究[J].金属学报，2009,41(11):1228-1232.REN Yi-bin,HUANG Jing-jing,YANG Ke,et al.Study of bio-corrosion of pure magnesium[J].Acta Metallurgica Sininca,2009,41(11):1228-1232.
• [7] 任聪林，宽军，曹鑫，等.挤压速度对Mg-2Y-1Zn-0.4Zr合金组织演变、力学性能和动态腐蚀行为的影响[J].材料热处理学报，2020,41(9):117-125.REN Cong-lin,KUAN Jun,CAO Xin,et al.Effect of extrusion speed on microstructure evolution,mechanical properties and dynamic corrosion behavior of Mg-2Y-1Zn-0.4Zr alloy[J].Transactions of Materials and Heat Treatment,2020,41(9):117-125.
• [8] 韩宝军，何琼，杨妙.机械研磨处理AZ91D镁合金表面晶粒细化研究[J].表面技术，2014,43(4):32-36.HAN Bao-jun,HE Qiong,YANG Miao.Investigation of surface grain refinement of AZ91D magnesium alloys by surface mechanical attrition treatment[J].Surface Technology,2014,43(4):32-36.
• [9] Orlov D,Ralston K D,Birbilis N,et al.Enhanced corrosion resistance of Mg alloy ZK60 after processing by integrated extrusion and equal channel angular pressing[J].Acta Materialia,2011,59(15):6176-6186.
• [10] op’t Hoog C,Birbilis N,Estrin Y,et al.Corrosion of pure Mg as a function of grain size and processing route[J].Advanced Engineering Materials,2008,10(6):579-582.
• [11] Argade G R,Kandasamy K,Panigrahi S K,et al.Corrosion behavior of a friction stir processed rare-earth added magnesium alloy[J].Corrosion Science,2012,58:321-326.
• [12] 陈吉华，陈冠清，严红革，等.轧制方式对镁合金生体腐蚀行为的影响[J].湖南大学学报：自然科学版，2016,43(12):20-30.CHEN Ji-hua,CHEN Guan-qing,YAN Hong-ge,et al.Effects of rolling mode on bio-corrosion behavior of magnesium alloys[J].Journal of Hunan University:Natural Sciences,2016,43(12):24-30.
• [13] Zhu S Q,Yan H G,Chen J H,et al.Effect of twinning and dyanamic recrystallization on the high strain rate rolling process[J].Scripta Materialia,2010,63(10):985-988.
• [14] 姚怀，文九巴，熊毅，等.挤压温度对固溶态Mg-2.0Zn-0.5Zr-3.0Gd合金微观组织及耐腐蚀性能的影响[J].稀有金属材料与工程，2019,48(6):270-277.YAO Huai,WEN Jiu-ba,XIONG Yi,et al.Effect of the extrusion temperature on microstructure and corrosion resistance of solution-treated Mg-2.0Zn-0.5Zr-3.0Gd alloy[J].Rare Metal Materials and Engineering,2019,48(6):270-277.
• [15] 张帅，李全安，朱宏喜，等.热处理对Mg-11Gd-3Y-0.6Ca-0.5Zr合金显微组织和腐蚀行为的影响[J].材料导报，2020,34(20):74-79.ZHANG Shuai,LI Quan-an,ZHU Hong-xi,et al.Effect of heat treatment process on microstructure and corrosion behavior of Mg-11Gd-3Y-0.6Ca-0.5Zr alloy[J].Materials Reports,2020,34(20):74-79.
• [16] Ralston K D,Birbilis N.Effect of grain size on corrosion[J].Corrosion-Houston Tx-,2010,66:1-4.
• [17] 刘玉项.合金化对镁电化学腐蚀速率影响的研究进展[J].稀有金属材料与工程，2021,50(1):361-372.LIU Yu-xiang.Research progress in effect of alloying on electrochemical corrosion rates of Mg alloys[J].Rare Metal Materials and Engineering,2021,50(1):361-372.
• [18] Zhou Q W,Zheng Z J,Gao Y.Abnormal selective dissolution by the partial recrystallization in a plastically deformed austenitic stainless steel[J].Corrosion Science,2021,118:1-11

文章评论(Comment)：