Zr、Sc对Al-Cu-Mg-Ag-Ti合金耐蚀性能的影响
|
摘要
通过晶间腐蚀、慢拉伸试验和电化学测试,研究了Zr、Sc对Al-Cu-Mg-Ag-Ti多元合金耐蚀性能的影响。结果表明,添加Zr能够提高合金的耐蚀性,含Zr合金的应力腐蚀敏感因子(I_(scc))都小于不含Zr的,但Zr、Sc复合添加并没有进一步提高合金的耐蚀性。Zr能够抑制合金的再结晶,使无沉淀析出带变窄,大大提高了合金的耐蚀性能。Zr含量为0.19%时合金的综合性能最佳,晶间腐蚀深度最浅,I_(scc)最小,抗拉强度最高,其屈服强度和抗拉强度分别为466 MPa和518 MPa。
The effects of Zr、Sc element on corrosion resistance of Al-Cu-Mg-Ag-Ti alloy were investigated by slow tensile,intergranular corrosion and electrochemical testing.The results reveal that the corrosion resistance of the alloy can be improved by adding Zr elements.Stress corrosion sensitivity factor(I_(scc))of Zr-containing alloys is lower than that of the Zr-free alloy.However,the compound addition of Zr and Sc can not further improve the corrosion resistance of the alloy.The addition of Zr can inhibit the recrystallization and make the precipitate free zone narrower,greatly improving the corrosion resistance of Al-Cu-Mg-Ag-Ti alloy.The comprehensive performance of Al-Cu-Mg-Ag-Ti alloy with 0.19%Zr presents the desirable comprehensive behavior,where the lowest depth of intergranular corrosion and the smallest I_(scc) as well as the highest tensile strength can be obtained.In addition,the yield strength and tensile strength of the alloy with 0.19%Zr reach 466 MPa and 518 MPa,respectively.
The effects of Zr、Sc element on corrosion resistance of Al-Cu-Mg-Ag-Ti alloy were investigated by slow tensile,intergranular corrosion and electrochemical testing.The results reveal that the corrosion resistance of the alloy can be improved by adding Zr elements.Stress corrosion sensitivity factor(I_(scc))of Zr-containing alloys is lower than that of the Zr-free alloy.However,the compound addition of Zr and Sc can not further improve the corrosion resistance of the alloy.The addition of Zr can inhibit the recrystallization and make the precipitate free zone narrower,greatly improving the corrosion resistance of Al-Cu-Mg-Ag-Ti alloy.The comprehensive performance of Al-Cu-Mg-Ag-Ti alloy with 0.19%Zr presents the desirable comprehensive behavior,where the lowest depth of intergranular corrosion and the smallest I_(scc) as well as the highest tensile strength can be obtained.In addition,the yield strength and tensile strength of the alloy with 0.19%Zr reach 466 MPa and 518 MPa,respectively.
引文
[1]ZHANG J B,ZHANG Y A,ZHU B H,et al.Characterization of microstructure and mechanical properties of Al-Cu-Mg-Ag-(Mn/Zr)alloy with high Cu:Mg[J].Materials&Design,2013,49(9):311-317.
[2]LIU X Y,PAN Q L,LU C G,et al.Microstructure and mechanical properties of Al-Cu-Mg-Mn-Zr alloy with trace amounts of Ag[J].Materials Science&Engineering,2009,A525(1):128-132.
[3]王建.Cr、Sc对Al-Cu-Mg-Ag合金的组织与性能的影响[D].郑州:郑州大学,2015.
[4]肖代红,杨太华,黄伯云.Cu和Mg对Al-Cu-Mg-Ag-Mn合金组织与性能的影响[J].特种铸造及有色合金,2007,27(6):413-416.
[5]齐浩,刘晓艳,梁顺星,等.Al-Cu-Mg-Ag新型耐热铝合金的抗腐蚀性能[J].中国有色金属学报,2015,25(11):3 035-3 039.
[6]LIU X Y,PAN Q L,ZHENG L Y,et al.Effect of aging temper on the thermal stability of Al-Cu-Mg-Ag heat-resistant alloy[J].Materials&Design,2013,46(4):360-365.
[7]孙立明,于化顺,闵光辉,等.Zr对Al-Zn-Mg-Cu合金组织和性能的影响[J].特种铸造及有色合金,2007,27(5):380-381.
[8]李国锋,张新明,刘胜胆,等.淬火转移时间对7055铝合金抗晶间腐蚀能力的影响[J].特种铸造及有色合金,2008,28(10):743-745.
[9]向青春,侯丽娜,赵静,等.Sc、Zr微合金化对Al-4Cu-1.5Mg合金组织与性能的影响[J].特种铸造及有色合金,2010,30(7):611-614.
[10]LEE S L,WU C T,CHEN Y D.Effects of minor Sc and Zr on the microstructure and mechanical properties of Al-4.6Cu-0.3Mg-0.6Ag alloys[J].Journal of Materials Engineering&Performance,2015,24(3):1 165-1 172.
[11]王瑞红,王永俊,王艳红.微量钪添加对Al-Cu合金时效析出及电化学腐蚀行为的影响[J].稀土学报,2014,32(2):190-196.
[12]苏景新,张昭,曹发和,等.铝合金的晶间腐蚀与剥蚀[J].中国腐蚀与防护学报,2005,25(3):192-197.
[13]余琨,李松睿,黎文献,等.微量Sc和Zr对2618铝合金再结晶行为的影响[J].中国有色金属学报,1999,9(4):709-714.
[14]LIU X Y,LI M J,GAO F,et al.Effects of aging treatment on the intergranular corrosion behavior of Al-Cu-Mg-Ag alloy[J].Journal of Alloys&Compounds,2015,639:263-267.
[15]余爱武.Ti、Zr复合微合金化对铝合金再结晶的影响[J].稀有金属,2014,40(12):1 200-1 206.
[16]DAY M K B,COMISH A J,DENT T P.The relationship between structure and stress-corrosion life in an Al-Zn-Mg alloy[J].Metal Science Journal,1969,3(1):175-182.
[2]LIU X Y,PAN Q L,LU C G,et al.Microstructure and mechanical properties of Al-Cu-Mg-Mn-Zr alloy with trace amounts of Ag[J].Materials Science&Engineering,2009,A525(1):128-132.
[3]王建.Cr、Sc对Al-Cu-Mg-Ag合金的组织与性能的影响[D].郑州:郑州大学,2015.
[4]肖代红,杨太华,黄伯云.Cu和Mg对Al-Cu-Mg-Ag-Mn合金组织与性能的影响[J].特种铸造及有色合金,2007,27(6):413-416.
[5]齐浩,刘晓艳,梁顺星,等.Al-Cu-Mg-Ag新型耐热铝合金的抗腐蚀性能[J].中国有色金属学报,2015,25(11):3 035-3 039.
[6]LIU X Y,PAN Q L,ZHENG L Y,et al.Effect of aging temper on the thermal stability of Al-Cu-Mg-Ag heat-resistant alloy[J].Materials&Design,2013,46(4):360-365.
[7]孙立明,于化顺,闵光辉,等.Zr对Al-Zn-Mg-Cu合金组织和性能的影响[J].特种铸造及有色合金,2007,27(5):380-381.
[8]李国锋,张新明,刘胜胆,等.淬火转移时间对7055铝合金抗晶间腐蚀能力的影响[J].特种铸造及有色合金,2008,28(10):743-745.
[9]向青春,侯丽娜,赵静,等.Sc、Zr微合金化对Al-4Cu-1.5Mg合金组织与性能的影响[J].特种铸造及有色合金,2010,30(7):611-614.
[10]LEE S L,WU C T,CHEN Y D.Effects of minor Sc and Zr on the microstructure and mechanical properties of Al-4.6Cu-0.3Mg-0.6Ag alloys[J].Journal of Materials Engineering&Performance,2015,24(3):1 165-1 172.
[11]王瑞红,王永俊,王艳红.微量钪添加对Al-Cu合金时效析出及电化学腐蚀行为的影响[J].稀土学报,2014,32(2):190-196.
[12]苏景新,张昭,曹发和,等.铝合金的晶间腐蚀与剥蚀[J].中国腐蚀与防护学报,2005,25(3):192-197.
[13]余琨,李松睿,黎文献,等.微量Sc和Zr对2618铝合金再结晶行为的影响[J].中国有色金属学报,1999,9(4):709-714.
[14]LIU X Y,LI M J,GAO F,et al.Effects of aging treatment on the intergranular corrosion behavior of Al-Cu-Mg-Ag alloy[J].Journal of Alloys&Compounds,2015,639:263-267.
[15]余爱武.Ti、Zr复合微合金化对铝合金再结晶的影响[J].稀有金属,2014,40(12):1 200-1 206.
[16]DAY M K B,COMISH A J,DENT T P.The relationship between structure and stress-corrosion life in an Al-Zn-Mg alloy[J].Metal Science Journal,1969,3(1):175-182.