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Portevin-Le Chatelier effect in Al-Zn-Mg-Cu-Zr aluminum alloy

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文摘 Portevin-Le Chatelier (PLC) effect in a severely cold-rolled Al-Zn-Mg-Cu-Zr aluminum alloy (AA7055 type) plate before and after annealing was investigated. The results show that the sample annealed at 300 ℃ undergoes PLC effect, whereas the PLC effect is not observed in the deformed sample or the samples annealed at 110 ℃ or 200 ℃. The main precipitates in the sample annealed at 300 ℃ are the coarsened η phases, while a mixture of small η′ phases and η phases dominates in the sample annealed at 200 ℃. In the deformed sample and sample annealed at 110 ℃, GP zone are the main precipitates. The different flow behaviors are ascribed to the type of precipitates as well as the dislocation density differences.
来源 Transactions of Nonferrous Metals Society of China ,2009,19(5):1071-1075 【核心库】
DOI 10.1016/s1003-6326(08)60408-2
关键词 aluminum alloy ; Portevin-Le Chatelier effect ; precipitation ; dislocation
地址

1. School of Materials Science and Engineering, Harbin Institute of Technology, Heilongjiang, Harbin, 150001  

2. Shenyang Aircraft Plants, Liaoning, Shenyang, 110034  

3. Beijing Institute of Aeronautical Materials, Beijing, 100095

语种 英文
文献类型 研究性论文
ISSN 1003-6326
学科 金属学与金属工艺
基金 国家973计划
文献收藏号 CSCD:3712089

参考文献 共 23 共2页

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