通过拉伸、剥落腐蚀、晶间腐蚀等实验和XRD、SEM、TEM等方法,研究了单级时效和形变热处理对一种Al-Mg-Si合金(Mg/Si=1.15)的力学性能和耐蚀性能的影响.结果表明:经过形变热处理Al-Mg-Si合金(Mg/Si=1.15)抗拉强度和屈服强度分别为395 MPa和365 MPa,比经过单级时效处理(抗拉强度为339 MPa,屈服强度为280 MPa)分别高了17％和30％;经过形变热处理Al-Mg-Si合金(Mg/Si=1.15)晶间腐蚀敏感性低于单级时效处理的,但其综合性能比经过单级时效处理的性能好.
Effects of single-stage aging and thermo-mechanical treatment on mechanical properties and corrosion resistance of an Al-Mg-Si aluminum alloy (Mg/Si =1.15) were investigated by means of tensile testing,exfoliation corrosion testing,inter-granular corrosion testing,XRD,SEM and TEM.The results show that the tensile strength and yield strength of the Al-Mg-Si alloy after thermo-mechanical treatment are 395 MPa and 365 MPa,and after single-stage aging treatment,the tensile strength and yield strength of the alloy are 339 MPa and 280 MPa.The intergranular corrosion resistance of the alloy treated by thermo-mechanical process is lower than that treated by single-stage aging,but comprehensive performance of the alloy treated by thermo-mechanical treatment is better than that treated by singlestage aging.
参考文献
| [1] | 魏梅红;刘徽平.船舶用耐蚀铝合金的研究进展[J].轻合金加工技术,2006(12):6-8,51. |
| [2] | 刘静安.Al-Mg-Si系合金的热加工工艺与可挤压性[J].铝加工,2002(01):1-4,10. |
| [3] | 吴跃;陈文琳;李伟;马勇.固溶处理对Al-0.9Mg-0.6Si-0.7Cu合金组织与性能的影响[J].材料热处理学报,2014(12):56-61. |
| [4] | Michal KOLAR;Ketill Olav PEDERSEN;Sverre GULBRANDSEN-DAHL;Knut MARTHINSEN.预变形结合人工时效对Al-Mg-Si合金力学性能的影响[J].中国有色金属学报（英文版）,2012(08):1824-1830. |
| [5] | 丁科;金秋敏;廖恒成.形变热处理对Al-Si-Mg铸造合金组织与性能的影响[J].材料热处理学报,2010(8):91-96. |
| [6] | 许刚.纯铝在NaCl溶液中活化溶解时电化学行为研究[J].腐蚀科学与防护技术,1998(06):321. |
| [7] | 闫丽珍;张永安;李锡武;李志辉;王锋;刘红伟;熊柏青.Al-0.66Mg-0.85Si合金均匀化过程中的组织演变[J].中国有色金属学报（英文版）,2014(4):939-945. |
| [8] | 潘琰峰;纪艳丽;郭富安.汽车车身板用6022铝合金组织及性能研究[J].南京航空航天大学学报,2008(2):255-259. |
| [9] | Kiryl A. Yasakau;Mikhail L. Zheludkevich;Sviatlana V. Lamaka;Mario G. S. Ferreira.Role of intermetallic phases in localized corrosion of AA5083[J].Electrochimica Acta,200727(27):7651-7659. |
| [10] | 王芝秀;李海;顾建华;宋仁国;郑子樵.Cu含量对Al-Mg-Si-Cu合金微观组织和性能的影响[J].中国有色金属学报,2012(12):3348-3355. |
| [11] | 李朝兴;李劲风;BIRBILIS Nick;贾志强;郑子樵.Mg2Si及Si粒子在Al-Mg-Si合金晶间腐蚀中协同作用机理的多电极偶合研究[J].中国腐蚀与防护学报,2010(2):107-113. |
| [12] | 张鑫明;聂祚仁;黄晖;文胜平;高坤元.冷变形及退火对5E06铝板晶间腐蚀性能的影响[J].中国有色金属学报,2013(11):3056-3063. |
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