| 脉冲电流处理对一种镍基耐蚀合金腐蚀行为的影响 |
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| 引用本文： | 刘杨,王磊,刘红艳,张北江,赵光普. 脉冲电流处理对一种镍基耐蚀合金腐蚀行为的影响[J]. 中国有色金属学会会刊, 2011, 21(9): 1970-1975. DOI: 10.1016/S1003-6326(11)60958-8 |
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| 作者姓名： | 刘杨 王磊 刘红艳 张北江 赵光普 |
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| 作者单位： | 东北大学材料各向异性与织构教育部重点实验室;钢铁研究总院高温材料研究所; |
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| 基金项目： | Project(2010CB631203)supported by National Basic Research Program of China; Project(51001021)supported by the National Natural Science Foundation of China; Projects(20100042120008,20100042110006)supported by the PhD Programs Foundation of Ministry of Education of China |
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| 摘 要： | 将脉冲电流处理应用于一种镍基耐蚀合金的时效过程,研究脉冲电流对合金显微组织及耐蚀性的影响规律及机理。结果表明,脉冲电流处理后,合金在力学性能基本保持不变的前提下,其耐晶间腐蚀性能得到显著提高。脉冲电流能够显著提高合金元素的界面扩散速度,其界面扩散速度远快于体扩散速度,晶界M23C6型碳化物呈典型的不连续析出转变特征。与常规时效处理相比,脉冲电流处理后晶界碳化物的不连续析出转变,使晶界位置的合金元素的贫化程度大幅度降低,在保证合金力学性能的前提下,显著改善合金的耐晶间腐蚀能力。
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| 关 键 词： | 镍基合金 脉冲电流 不连续析出 晶间腐蚀 |
| 收稿时间： | 2010-10-30 |
Effect of electropulsing treatment on corrosion behavior of nickel base corrosion-resistant alloy |
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| LIU Yang,WANG Lei,LIU Hong-yan,ZHANG Bei-jiang,ZHAO Guang-pu .Key Lab for Anisotropy , Texture of Materials,Northeastern University,Shenyang ,China. Effect of electropulsing treatment on corrosion behavior of nickel base corrosion-resistant alloy[J]. Transactions of Nonferrous Metals Society of China, 2011, 21(9): 1970-1975. DOI: 10.1016/S1003-6326(11)60958-8 |
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| Authors: | LIU Yang WANG Lei LIU Hong-yan ZHANG Bei-jiang ZHAO Guang-pu .Key Lab for Anisotropy Texture of Materials Northeastern University Shenyang China |
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| Affiliation: | LIU Yang1,WANG Lei1,LIU Hong-yan1,ZHANG Bei-jiang2,ZHAO Guang-pu2 1.Key Lab for Anisotropy and Texture of Materials,Northeastern University,Shenyang 110819,China,2.Department of High-temperature Materials,Central Iron and Steel Research Institute,Beijing 100081 |
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| Abstract: | Electropulsing treatment(EPT) was performed on a nickel base corrosion resistant alloy during aging.The effect of EPT on the microstructure and corrosion resistance of the alloy and the mechanisms were investigated.The results show that the intergranular corrosion resistance can be improved substantially without the degradation of mechanical properties of the alloy by EPT.The EPT has an effect of enhancing the interface diffusion rate of the alloying element,which is higher than the body diffusion rate.And ... |
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| Keywords: | nickel base alloy electropulsing discontinuous precipitation intergranular corrosion |
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