| 引用本文: | 王国峰,骆俊廷,王长文,蒋少松,卢振.电沉积纳米复合材料的超塑性研究[J].材料科学与工艺,2013,21(4):95-99.DOI:10.11951/j.issn.1005-0299.20130417. |
| WANG Guo-feng,LUO Jun-ting,WANG Chang-wen,JIANG Shao-song,LU Zhen.Superplasticity of nanocomposite fabricated by electrodeposition[J].Materials Science and Technology,2013,21(4):95-99.DOI:10.11951/j.issn.1005-0299.20130417. |
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| 电沉积纳米复合材料的超塑性研究 |
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王国峰1,2,骆俊廷2,王长文1,蒋少松1,卢振1
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(1．中国航空工业集团公司沈阳发动机设计研究所,辽宁 沈阳 110043;2．哈尔滨工业大学 材料科学与工程学院,黑龙江 哈尔滨 150001;3．哈尔滨工业大学 现代焊接生产技术国家重点实验室,黑龙江 哈尔滨 150001)
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| 摘要: |
| 采用脉冲电沉积技术制备了含不同Al2O3颗粒的Al2O3/Ni-Co纳米复合材料,在应变速率从8.33×10-4 s-1到 1.67×10-2 s-1,温度从723K到823K的范围内,研究了它们的超塑性拉伸变形行为,确定了最佳超塑性条件并获得了最大延伸率.采用SEM 和TEM对电沉积和超塑变形前后试件的显微结构进行了表征.应用晶粒长大行为和协调机制对合金和复合材料的超塑性进行了对比研究和讨论. |
| 关键词: Al2O3/Ni-Co纳米复合材料 低温超塑性 脉冲电沉积 显微结构 变形机制 |
| DOI：10.11951/j.issn.1005-0299.20130417 |
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| 基金项目:国家自然科学基金(51275129); 哈尔滨科技创新人才基金(2011RFLXG002). |
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| Superplasticity of nanocomposite fabricated by electrodeposition |
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WANG Guo-feng,LUO Jun-ting,WANG Chang-wen,JIANG Shao-song,LU Zhen
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(1.National key Laboratory for precision Hot processing of Metals,Harbin Institute of Technology,Harbin 150001,China)
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| Abstract: |
| In the present paper,Al2O3/Ni-Co nanocomposite with various Al2O3 particles were fabricated by pulse current electrodeposition,and their superplastic tensile deformation behaviors were investigated at strain rates ranging from 1×10-3 s-1 to 2×10-2s-1 and temperatures ranging from 723K to 823K.Optimal superplastic condition and the maximum elongation were determined.Scanning electron microscopy and transmission electron microscopy were employed to examine the microstructures of the as-deposited and deformed samples.The superplastic behavior of the alloy and composite were compared and discussed in terms of their grain growth behavior and accommodation mechanisms. |
| Key words: Al2O3/Ni-Co nanocomposite low temperature superplasticity pulse current electrodeposition microstructure deformation mechanism |
