摘要:研究了热处理工艺(不同固溶温度和固溶时间)对钼铜奥氏体不锈钢析出物含量和形态的影响,以及在不同固溶温度下材料的耐腐蚀磨损性能。试验结果表明,钼铜奥氏体不锈钢析出物随固溶温度的升高和固溶时间的延长而增多,其形态也由针棒网状长成块状;在纯磨损环境下,1100℃×8h空冷下的奥氏体不锈钢析出物数量最多,耐磨损性能最好;而在有酸的腐蚀磨损环境介质中,950℃×8h空冷的热处理工艺下的材料耐腐蚀磨损性能最佳。关键词:钼铜奥氏体不锈钢;热处理工艺;组织;腐蚀磨损:TG142171Effectofheat:025426051(2008)0220008204文献标识码:AtreatmentonmicrostructureandcorrosionwearresistanceofMo2CuausteniticstainlesssteelZHANGXian2zhong1,CAIQi2zhou2,CHENQing2feng1,XIONGYu2zhang1(11ReseachandDevelopmentCenter,WuhanSteelandIron(Group)Corp.,WuhanHubei430081,China;21FacultyofMaterialsScienceandEngineering,HuazhongUniversityofScienceandTechnology,WuhanHubei430074,China)Abstract:Theinfluenceofheattreatment(differentsolidsolutiontemperatureandtime)ontheamountandmorphologyoftheprecipitatesinMo2Cuausteniticstainlesssteelwasinvestigated,andthecorrosionwearresistanceofthesamplessolutiontrea2tedunderdifferenttemperaturesweretested.Theresultsshowthatwithincreasingthesolutiontemperatureandtime,thea2mountofprecipitatesincreaseanditsmorphologychangesfromneedle2stickreticulationtomass;whensolutiontreatedat1100奥氏体不锈钢由于具有良好的抗腐蚀性能,因而广泛应用于化学、食品、纺织、发电、煤矿和海洋等工业之中,但它硬度低,不耐摩擦和磨损,大多数不锈钢零作者简介:张贤忠(1973.09—),男,湖北钟祥人,工程师,硕士,主要从事钢铁产品的开发,已发表论文3篇。联系电话:071123231523,15871516036E2mail:zhangxianzh@163.com收稿日期:2007210202123部件,由于严重磨损而过早失效],因此,生产应用中参考文献:1999,271:2512256.YamamotoA,AshidaT,KoutaY,eta1.PrecipitationinMg2(4～13)%Li2(4～5)%Znternaryalloys[J].MaterialsTransactions,2003,44(4):6192624.ZhongHao,FengLinping,LiuPeiying.DesignofaMg2Li2Al2ZnalloybyofCALPHADapproach[J].JournalofComputer2AidedMaterialsDesign,2003,(10):1912199.YamamotoA,AshidaT,KoutaY,eta1.PrecipitationinMg2(4～13)%Li2(4～5)%Znternaryalloys[J].JournalofJapaneseInstituteofLightMetals(inJapanese),2001,51(11):6042607.MordikeBL,EbertT.Magnesiumproperties2applications2po2tential[J].MaterialsScienceandEngineering,2001,A302:37245.SanschagrinA,TremblayR,AngersR,eta1.Mechanicalpropertiesandmicrostructureofnewmagnesium2lithiumbasealloys[J].MaterialsScienceandEngineeringA,1996,220(1):69277.SivakesavamO,PrasadYVRK.Characteristicsofsuper2plasticitydomainintheprocessingmapforworkingofas2castMg21115Li21.5Alalloy[J].MaterialsScienceandEngineer2ingA,2002,323:2702277.LiuT,ZhangW,WuSD,etal.Mechanicalpropertiesofatwo2phasealloyMg28%Li21%Alprocessedbyequalchannelangularpressing[J].MaterialsScienceandEngineeringA,[1][6][2][7][8][3][9][4][10]WangTao,ZhangMilin,NiuZhongyi,LiuBin.Influenceofrareearthelementsonmicrostructureandmechanicalprop2ertiesofMg2Lialloys[J].JournalofRareEarths,[5]《金属热处理》2008年第33卷第2期8要求它具有很好的耐腐蚀和磨损的双重抗力。人们在研究耐腐蚀磨损奥氏体不锈钢时发现,钼、铜合金化的高铬镍奥氏体不锈钢通过一定的热处理工艺,析出较多的金属间化合物可提高其耐磨性能,特别是金属间化合物相组成复杂多变,硬而脆,而且与基体的电极电位相差较小,是弱阴极相,能在基体中起钉扎作用而提高奥氏体不锈钢的耐磨性[426]。但由于热处理工艺的不同而其析出物的数量和形貌有较大的差别,从而影响了奥氏体不锈钢的耐腐蚀磨损性能。因此研究热处理工艺对钼铜奥氏体不锈钢析出物和耐腐蚀磨损性能的影响,对开发新型耐...