等通道转角挤压超细晶ZL203合金的晶间腐蚀行为
Intergranular Corrosion Behavior of Ultra-fine Grained ZL203 Alloy Fabricated by Equal-Channel Angular Pressing
摘 要
采用浸泡腐蚀和电化学腐蚀试验研究了等通道转角挤压制备的超细晶ZL203合金的晶间腐蚀行为.结果表明:等通道转角挤压细化了合金的显微组织,同时也显著降低了合金晶间腐蚀敏感性:合金晶间腐蚀敏感性降低的原因一是θ相网状结构的破碎打断了晶间腐蚀扩展通道,二是变形α-Al基体氧化膜耐蚀性能的提高.
ZL203合金
超细晶
晶间腐蚀
equal-channel angular pressing (ECAP)
ZL203 alloy
ultra-fine grain
intergranular corrosion
Abstract
The intergranular corrosion (IGC) behavior of the ZL203 alloy bulk fabricated by equal-channel angular pressing (ECAP) was investigated by immersion corrosion tests and electrochemical corrosion tests.The results show that the ECAP process refined the microstructure and decreased the IGC susceptibility of the ultra-fine grain (UFG) ZL203 alloy significantly.Two primary factors led to the decrease in IGC susceptibility of the UFG ZL203 alloy.The first was that the breakdown of the θ-phase net-like structure blocked the corrosion propagation channels.The second was the corrosion resistance improvement of oxide film of the deformed α-Al matrix.
中图分类号 TG171
所属栏目 试验研究
基金项目
收稿日期 2009/3/10
修改稿日期 2010/1/26
网络出版日期
作者单位点击查看
备注宋丹(1982-),男,浙江上虞人,博士研究生.
引用该论文: SONG Dan,MA Ai-bin,JIANG Jing-hua,LIN Ping-hua,FAN Jun-feng,YANG Dong-hui. Intergranular Corrosion Behavior of Ultra-fine Grained ZL203 Alloy Fabricated by Equal-Channel Angular Pressing[J]. Materials for mechancial engineering, 2010, 34(3): 27～30
宋丹,马爱斌,江静华,林萍华,范俊峰,杨东辉. 等通道转角挤压超细晶ZL203合金的晶间腐蚀行为[J]. 机械工程材料, 2010, 34(3): 27～30
被引情况:
【1】张旋,王泽华,程江波,林尽染,梁秀兵,陈永雄,孟凡军, "电弧喷涂铁基非晶纳米晶涂层的耐腐蚀性能",机械工程材料 37, 62-65(2013)
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参考文献
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【3】GALVELE J R,DEMICHELI S M.Mechanism of intergra-nular corrosion of Al-Cu alloy[J].Corrosion Science,1970,10(11):795-807.
【4】DI Li,HU Yang-ling,GUO Bao-lan.Study on the evolution of localized corrosion of 2024T3 aluminum alloy with EIS[J].Materials Science and Engineering A,2000,280(1):173-176.
【5】LEE W J,PYUN S I.Effects of hydroxide ion addition on anodic dissolution of pure aluminum in chlotide ion-containing solution[J].Electrochimica Acta,1999,44:4041-4049.
【6】BESSONE J B,SALINAS D R,MAYER C E,et al.An EIS study of aluminum barrier-type oxide films fomed in different media[J].Electrochimica Acta,1992,37(12):2283-2290.
【7】ROBERGE P R,HALLIOP E,LENARD D R,et al.Electrochemical characterization of the corrosion resistance of aluminum-lithium alloys[J].Corrosion Science,1993,35(1/4):213-221.
【8】WEI Wei,WEI Kun-xia,DU Qing-bo.Corrosion and tensile behaviors of ultra-fine grained Al-Mn alloy produced by accumulative roll bonding[J].Materials Science and Engineering A,2007,454/455:536-541.
【9】SONG Dan,MA Ai-bin,JIANG Jing-hua,et al.Corrosion behavior of ultra-fine grained industrial pure Al fabrivated by ECAP[J].Transactions of Nonferrous Metals Society of China,2009,19:1065-1070.
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