Effect of Cu and Sr on the Microstructure and Mechanical Properties of Al-Mg-Si Based Alloy Sheets

LU Guang-xi; GUAN Shao-kang; CHEN Hai-jun; LIN Dun-wen

Materials and Mechanical Engineering > 2006 > 30(4): 56-59.

LU Guang-xi, GUAN Shao-kang, CHEN Hai-jun, LIN Dun-wen. Effect of Cu and Sr on the Microstructure and Mechanical Properties of Al-Mg-Si Based Alloy Sheets[J]. Materials and Mechanical Engineering, 2006, 30(4): 56-59.

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Effect of Cu and Sr on the Microstructure and Mechanical Properties of Al-Mg-Si Based Alloy Sheets

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Received Date: March 05, 2005

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The effects of Cu and Sr elements on the mechanical properties of Al-Mg-Si based alloy sheets were studied by using metallograph,DSC,XRD,SEM and TEM.The quaternary phase-Q phase could form when Cu was added into the alloy.The mechanical properties of aluminum alloy sheets could evidently increase.The tensile strength of aluminum alloy sheet achieved 333MPa and the yield achieved 182MPa when Cu content was 0.84%(wt%).Sr could refine grains of the alloys,promote precipitation and change β(Al5FeSi) phase into α(Al8Fe2Si) phase,and thus increase the mechanical properties of aluminum alloy sheets.Compared to the alloy without Sr,the tensile strength increased 10-20MPa when 0.033%Sr was added into the alloy.
- Cu,
- Sr,
- Al-Mg-Si based alloy sheet,
- microstructure,
- mechanical property

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[1]	关绍康,姚波,王迎新.汽车铝合金车身板的研究现状和发展趋势[J].机械工程材料,2001,25(5):12-14.
[2]	彭志辉,甘卫平.汽车工业用铝材的开发与应用[J].汽车工艺与材料,1999,(4):1-3.
[3]	Hirsch J.The application of aluminum alloy in automotive[J].Materials Science Forum,1997,242(10):33-50.
[4]	关绍康,姚波,王迎新.Ti和Ce对AlMgSi基合金板材成形性能的影响[J].中国有色金属学报,2002,12(4):759-763.
[5]	Readings K H.Aluminum structures used in aerospace status and prospect[J].Materials Science Forum,1997,242:11-24.
[6]	Perovic A,Pervic D D,Weatherly G C,et al.Precipitation in aluminum alloys AA6111 and AA6016[J].Scripta Materialia,1999,41(7):703-708.
[7]	Moons T,Ratchev P,De Smet P,et al.A comparative study of two Al-Mg-Si alloys for automotive applications[J].Scripta Materialia,1996,35(8):939-945.
[8]	Dorward R C,Bouvier C.A rationalization of factors affecting strength,ductility and toughness of AA6061-type Al-Mg-Si-(Cu) alloys[J].Materials Science and Engineering,1998,A254:33-44.
[9]	Chakrabarti D J,Laughlin David E.Phase relations and precipitation in Al-Mg-Si alloys with Cu additions[J].Progress in Materials Science,2004,49:389-410.
[10]	Mulazimoglu M H,Zaluska A,Paray F,et al.The effect of strontium on the Mg2Si precipitation process in 6201 aluminum alloy[J].Physical Metallurgy and Materials Science,1977,28(6):1289-1295.
[11]	汪沛雨,徐淑清,张新颖.Al-Si-Cu合金加入Sr复合变质剂的变质效果[J].特种铸造及有色金属,1995,(2):6-8.
[12]	Paray F,Gruzleski J E,Kulunk B,el at.Metallurgical effects of strontium on wrought 6061 alloys[A].Light Metals:Proceedings of Sessions,TMS Annual Meeting (Warrendale,Pennsylvania)[C].Anaheim,CA,USA,TMS,1996.707-711.
[13]	Doan L C,Ohmori Y,Nakai K.Precipitation and dissolution reactions in a 6011 aluminum alloys[J].Materials Transaction J IM,2000,41(2):300-305.

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