S31608奥氏体不锈钢应变强化诱发马氏体相变实验.pdf

$31608奥氏体不锈钢应变强化诱发马氏体相变实验陈海云。盛水平(杭州市特种设备检测院,浙江杭州 310003) 摘要:研究了$31608奥氏体不锈钢在两种温度、两种应变速率及不同应变量下的奥氏体形变诱发马氏体相变变化。试验研究表明,温度对S31608奥氏体不锈钢形变诱发马氏体相变有重要的影响,在点以下温度形变比在点以上更易诱发马氏体相变;基于温度与应变的协合效应,在点以下,应变量越大马氏体相变量越多;应变速率对在Me点以下温度形变诱发马氏体相变无明显影响,但在常温下高应变速率可抑制马氏体相转变。关键词:$31608奥氏体不锈钢;Ms温度;形变马氏体;应变速率中图分类号:TH142; 文献标识码:A 文章编号:1001—4837(2013)08—0007—08 doi:.1001— ExperimentsfortheS31608AusteniticStainlessSteelDeformation InducedMartensiteTransfo·rmation CHENHai—yun,SHENGShui—ping (HangzhouSpeciMEquipmentInspectionInstitute,Hangzhou310003,China) Abstract:Underthetwotemperatures,bothstrain,rateanddifferentstrain,the$31608austeniticstainless thatthetemperaturewasimportantfactorsfortheS31608austeniticstainlesssteeldeformation—induced martensitictransformation,undertheMstemperaturedeformationthantheaboveMsmoreeasilyinduced ,thegreaterstrainthe - mationundertheMstemperature,butthehighstrainratecaninhibitthemartensitetransformationatroom temperature. Keywords:$31608austeniticstainlesssteel; temperature;deformation—inducedmartensite;strain rate 0引言应变强化技术可以提高奥氏体不锈钢的屈服强度,能够充分利用奥氏体不锈钢的力学性能,具有节能降耗的优点,被广泛应用于各类低温容器基金项