2A14铝合金锻环阳极化后表面异常条纹分析.pdfVIP

《热加工工艺》20l8年9月第47卷第l7期

2A14铝合金锻环阳极化后表面异常条纹分析

淡婷，马芳，颜明礼，陈肖潇李晓光，高晶

(首都航天机械公司，北京l00076)

摘要：禁型火箭用2A14钒合金端框阳卡岐瓴化发现太面存常条纹，本文采H】金牛f】榆、艇J测试，：

性能愉洲等法‘，对锻环阳搬氧化表面异常条纹_lI=三成机婵进行了分析结果表明，条纹处组织仔流线唧}JJ州象：嘏

端表层的流线切断对整个锻环可靠性无影响．fHtlit1较深的流线切断会计锻环的町靠性造成不f．『影响站I}

综介分析僻知，¨1于锻造lI序导致合金端桃t而流线发生变化，从而日I揪化后，_蚌常条纹

关键词：钌{合金锻环；阳极氧化；异常条纹；流线

DOI：10．141580．cnki．1001-3814．2018．17．066

中图分类号：TG3l6192文献标识码：A文章编号：1001—3814(20l817-0251—03

AnalysisofAbnormalStripesonSurfaceof2A14AluminumAlloy

ForgingRingsafterAnodization

DANTing，MAFang，YANMingli，CHENXiaoxiao，LIXiaoguang，GAOJing

(CapitalAerospaceMachineryCompany，Beijing100076，China)

Abstract：Afteranodizing，abnormalstripesonthesurfaceof2AI4aluminumalloyendframeofacertainrocketwere

found．Thefomrationmechanismofabnormalstripesonanodizedsurfaceoftheforgedringwasanalyzedbymeansof

metallographicexamination，hardnesstestandmechanicalpropertiestest．Theresultsshowthattherearestreamlineshear

phenomenainthestripes．Thestreamlinecuttingoftheuppersurfacelayeroftheforgingringhasnoeffectonthereliabilityof

thewholeforgingring，butdeepstreamlinecuttingintheaxialdirectionwillhaveanegativeeffectontheIeliabilityofthe

forgedring．Combinedwiththeworkingconditionsandcomprehensiveanalysis，itisknownthattheabnormalstripesappear

afteranodizationduetothechangeofthesurfacestreamlineonthealuminumalloyendframeduringthetbrgingprocess

．

Keywords：aluminumalloyforgingrings；anodicoxidation；abnormalstripes