| Al-Cu based welding wire with minor Sc-Zr alloying and its application |
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| 作者姓名： | 尹志民 郭飞跃 潘青林 宋练鹏 |
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| 作者单位： | School of Materials Science and Engineering，School of Materials Science and Engineering，School of Materials Science and Engineering，School of Materials Science and Engineering Central South University，Changsha 410083，China，Central South University，Changsha 410083，China，Central South University，Changsha 410083，China，Central South University，Changsha 410083，China |
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| 基金项目： | Project (G19990 64 911)supportedbytheNationalKeyFundamentalResearchandDevelopmentProgramofChina |
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| 摘 要： | 1 INTRODUCTION2 195aluminum lithiumalloyisanewkindofaerospacestructuralmaterialswithlowdensity ,highspecificstrengthandspecificmodulusaswellasexcel lentlowtemperature performances13] .Although2 195alloyhasexcellentcombinedproperties ,thereisstillaproblemofhowtoguaranteeitsweldingjointwithalsosuch goodcombined properties4 ] .Duetotheinfluenceofweldingheatinputduringwelding ,microstructureandpropertiesofaluminum lithiumal loywillbechangedalot,andthestrengthofHAZ(heat affectedzone)obtaine…
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Al-Cu based welding wire with minor Sc-Zr alloying and its application |
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| YIN Zhi min,GUO Fei yue,PAN Qing lin,SONG Lian peng.Al-Cu based welding wire with minor Sc-Zr alloying and its application[J].Transactions of Nonferrous Metals Society of China,2003,13(4). |
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| Authors: | YIN Zhi min GUO Fei yue PAN Qing lin SONG Lian peng |
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| Abstract: | A kind of Al Cu (Sc, Zr, Mn, Ti, V, B) welding wire was developed by adding minor Sc, Zr, Mn, V, B, and was used for welding 2195 aluminum alloy plate with a thickness of 2 mm. Mechanical properties and microstructure of welding wire and welding joint were studied. The results show that strength coefficient of the welding joint is 0.70 and the weakest area lies in the softened zone of HAZ. It is indicated that this welding wire adding minor Sc, Zr, Mn, V, B is an ideal welding wire for 2195 Al Li alloy plate. The high strength of the weld comes from grain refining strengthening and precipitation strengthening of Al 2Cu, Al 3Sc and Al 3Zr. |
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| Keywords: | 2195 aluminum alloy Sc welding joint microstructure mechanical properties |
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