| Cu／Mg比对AA7085显微组织与性能影响 |
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| 引用本文： | 吴先哲,肖代红,朱哲民,李秀秀,陈康华.Cu／Mg比对AA7085显微组织与性能影响[J].中国有色金属学会会刊,2014,24(7):2054-2060. |
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| 作者姓名： | 吴先哲 肖代红 朱哲民 李秀秀 陈康华 |
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| 作者单位： | 中南大学粉末冶金国家重点实验室; |
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| 基金项目： | Projects(51271152,51021063)supported by the National Natural Science Foundation of China;Project(13JJ6006)supported by Hunan Provincial Natural Science Foundation,China;Project(2012CB619502)supported by National Basic Research Program of China |
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| 摘 要： | 采用熔铸法制备具有不同Cu／MgLk（0．67，1．0，1．06，1．6）的AA7085铝合金。采用金相显微镜、扫描电镜、力学性能测试和腐蚀测试研究Cu／Mg比对基体合金显微组织、力学性能和腐蚀行为的影响。结果表明，当Cu／Mg比为1．6时，AA7085铝合金具有更好的抑制再结晶能力和抗腐蚀性能。当Cu／Mg比为0．67时，铝合金具有更为优越的力学性能，其抗拉强度与屈服强度分别达到586和550MPa。而当Cu／Mg比为1．0时，合金的力学性能和耐腐蚀性能均下降。
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| 关 键 词： | AA7085铝合金 Cu/Mg比 力学性能 腐蚀性能 |
| 收稿时间： | 17 October 2013 |
Effects of Cu/Mg ratio on microstructure and properties of AA7085 alloys |
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| Xian-zhe WU,Dai-hong XIAO,Zhe-min ZHU,Xiu-xiu LI,Kang-hua CHEN.Effects of Cu/Mg ratio on microstructure and properties of AA7085 alloys[J].Transactions of Nonferrous Metals Society of China,2014,24(7):2054-2060. |
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| Authors: | Xian-zhe WU Dai-hong XIAO Zhe-min ZHU Xiu-xiu LI Kang-hua CHEN |
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| Affiliation: | ( State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) |
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| Abstract: | AA7085 aluminum alloys with different Cu/Mg ratios （0.67, 1.0, 1.06, 1.6） were prepared by ingot metallurgy method. The effects of Cu/Mg ratio on the microstructure, mechanical properties and corrosion behavior of the AA7085 alloys were investigated by optical microscope, scanning electron microscope （SEM）, mechanical properties and corrosion testing. The results indicate that a better recrystallization inhibition and corrosion resistance can be achieved when Cu/Mg ratio is 1.6. When Cu/Mg ratio is 0.67, the alloy reveals better mechanical properties, and the tensile strength and yield strength of AA7085 alloys are 586 and 550 MPa, respectively. Moreover, both the mechanical properties and corrosion resistance of the alloy are reduced when Cu/Mg ratio is equal to 1.0. |
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| Keywords: | AA7085 aluminum alloy Cu/Mg ratio mechanical properties corrosion performance |
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