采用慢应变速率试验(SSRT)研究了7075铝合金的应力腐蚀行为.试验结果表明,外加阳极极化和阴极极化都能增加7075铝合金的应力腐蚀敏感性,即使在弱极化情况下也能显著增加合金的应力腐蚀敏感性.但是,外加极化对于不同热处理状态的7075铝合金,其应力腐蚀敏感性增加的程度不同.电极极化对T6状态合金的SCC敏感性的影响显著,而对RRA和T7351状态合金的影响较轻微.随着拉伸应力的增加,7075-RRA铝合金的阳极极化曲线略向正移,滞后环面积扩大,但并不显著.
参考文献
| [1] | Fleck P;Calleros D;Madsen M.Retrogression and reaging of 7075 T6 aluminum alloy[A].Swizerland:2000 Trans Tech Publications,2000:649-654. |
| [2] | Tsai T C;Chang J C;Chuang T H .Stress corrosion cracking of superplastically formed 7475 aluminum alloy[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1996,28(10):2113-2121. |
| [3] | Robinson J S;Cudd R L.Electrical conductivity variations in X2096, 8090, 7010 and an experimental aluminium lithium alloy[A].,2000:331-337,971-976. |
| [4] | Cooper K R;Young L M;Gangloff R P.The electrode potential dependence of environment-assisted cracking of AA7050[A].,2000:331-337,1625-1634. |
| [5] | Tsai W T;Duh J B;Yeh J J et al.Effect of pH on stress corrosion cracking of 7050-T7451 aluminum alloy in 3.5% NaCl solution[J].Corrosion,1990,46:444-449. |
| [6] | Braun R .Slow strain rate testing of aluminum alloy 7050 in different tempers using various synthetic environments[J].Corrosion,1997,53:467-474. |
| [7] | Maitra S .Determination of stress corrosion cracking of Al-Cu-Mg alloys by slow strain rate and alternate immersion testing[J].Corrosion,1981,37:98-103. |
| [8] | Altenpohl D.Aluminumviewedfromwithin[M].Dusseldorf:Aluminium-VerlagGmbH,1982:79-91. |
| [9] | Hasse K R;Dorward RC .Long-term marine atmospheric stress corrosion tests on high-strength AlZnMgCu alloys[J].Corrosion,1986,42:663-669. |
| [10] | Dorward R C;Hasse K R .On tensile properties and SCC resistance of Al-Zn-Mg-Cu system alloys[J].Corrosion Science,1982,22:251-257. |
| [11] | Maitra S .Determination of stress corrosion cracking of Al-Cu-Mg alloys by slow strain rate and alternate immersion testing[J].Corrosion,1981,37:98-103. |
| [12] | Xiaomei Li;StarinkMJ.Analysis of precipitation and dissolution in overaged 7xxx aluminum alloys using DSC[A].,2000:331-337,1071-1076. |
| [13] | Riontino G;Abis S;Mengucci P.DSC investigation of natural ageing in high-copper AlCuMg alloys[M].Materials Science Forum,2000:331-337,1025-1030. |
| [14] | Uguz A;MartinJ W .The effect of retrogression and re-ageing on the ductile fracture toughness of Al-Zn-Mg alloys containing different dispersoid phases[J].Journal of Materials Science,1995,30:5923-5926. |
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