高温用碳钢管道材料损伤的金相分析

20009September.2000143JournalofNanchangInstituteofAeronauticalTechnologyVol.143(330030)(200011),,,,TG115.211,161,14.78MPa1985,,,,,,2,,11a.b.c.a.b.c.,2.1,,,,,,,,:,13,(),(10215)%,2.2,,,,,,,,43,(+)5,,1,a,,,,b,6,c,:1999-12-20:,,1945,©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,7,,,c;,,,d,,,,,,,,:,,,14(1),,,,(2),(3),,,,1,1042DA,,1996;25(2);2,,,1996,19(4);3,,,1995,16(2);4,21/4Cr1Mo242000©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,1994,34(5):565;5,,:,1996;6,21/4Cr1Mo,,1994,34(5):562;7()J.A.,,:,1987MetalloscopyAnalysisonMaterialDamageofCarbonSteelPipingServicedunderHighTemperatureXiaoFangrong1ChenDongmei2(1.JiangxiNationalPharmaceuticalFactory,NanchangP.R.China330034)(2.ShanghaiJiansheLuqiaoMachineryCO.Ltd,ShanghaiP.R.China220011)Abstract:Themetalloscopyofpipingmaterialexposedtohydrogenandhighpressureisanalyzedonthebasisofanalyzingthemechanicspropertyforfactorypracticalusage.Theavailableresultscanbeusedtoevaluatematerialdamageandsafetystate,andtoassesstheresiduallifeofotherpipelinesservicedinsimilarconditions.KeyWords:CarbonSteel;Materialdamage;Metalloscopyanalysis;Hightemparature.(18)SiCParticlesReinforcedMoSi2CompositesAiYunlongDenKeminghuangXiaopeng(Dept.ofMarterialsEngineering,NanchangInstituteofAeronauticalTechnology,Nanchang,P.R.China330034)Abstract:SiCparticlesreinforcedMoSi2matrixcompositeswhichwassynthexizedbyhotpressingarestudied.Throughobservationonthemi2crostructureofMoSi2anditscompositesaccompaniedwiththemeasurementofbendingstrength,microhardnessandfracturetoughness,thestrengthen2ing2tougheningmechanismofthematerialsisrevealed.Itisshownthatthestrengtheningmechanismofthecompositesaresecondlyphasestrengtheningandgrainrefining,andthetougheningmechanismisasyntheticeffectintermsofgrainrefining,crackdeflectionandcrackbranching.KeyWords:SiCparticle;MoSi2composite;Strengthening2toughening;MicrostructureandProperty.3:25©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.