Cu／Mg比对AA7085显微组织与性能影响

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Bibliographic Details
Published in中国有色金属学报：英文版 Vol. 24; no. 7; pp. 2054 - 2060
Main Author 吴先哲 肖代红 朱哲民 李秀秀 陈康华
Format Journal Article
LanguageEnglish
Published 2014
Subjects
AA7085铝合金
Cu／Mg比
力学性能
腐蚀性能
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ISSN1003-6326

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Bibliography:43-1239/TG
AA7085 aluminum alloy; Cu/Mg ratio; mechanical properties; corrosion performance
Xian-zhe WU, Dai-hong XIAO, Zhe-min ZHU, Xiu-xiu LI, Kang-hua CHEN（ State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China）
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.
ISSN:1003-6326