ECAP挤压对5083铝合金组织与力学性能的影响.pdf

Hot WorkingTechnolo斟2013，V01．42，No．13 ●实验与研究● 王敏1。马爱斌|，2。江静华1，宋丹1。陈建清1。杨东辉1 (1．河海大学力学与材料学院，江苏南京2l0098；2．河海科技研究院有限公司，江苏常州213164) 压硬化和细晶强化效果，在100℃ECAP挤压和200℃退火同样可提高该合金的抗拉强度和塑性变形能力。 关键词：等通道转角挤压(ECAP)；5083铝合金；晶粒细化；微观组织；力学性能 中图分类号：TGl46．21 文献标识码：A Emctof onMicrostmctureand Equal—ch锄elAngIllarPressing Of5083Al Mechani咖PmpertiesAⅡoy WANG Milll，MA加binL2，JnNGm曲强1，SONGDanl，CmN of and InstitIlte MechaIlics 21 Research (1．Collegc Materials，Hohai 0098，Chilla；2．HohaiTechnology univers时，N删ing 213164，China) Co．，Ltd．，Ch柚g出ou mech锄ical Abst瑚ct：The of Al were under equal-ch锄el硼gular properties pressiIlg(ECAP)5083alloy mestigated tcnsion．Thercsultss110w也at5083Al ECAP at100℃for16 a room-te】mp喇ture alloysqueezedby pfocess passes砌uces D锄arkablerefinementaIlda distributionofsecond itstensile c柚rcachas grain homogeneollsdispersion phaSes，柚d s仃ength 5083Al ECAP at200℃for16 high私480MPa；me alloysqueezedby process passes，itss缸eng山reduces(about380～口a) but above ECAP ECAP can plastic时markedlyiIIlproves(clongadon tclnp蹦InJre孤d 16％)；Reducing illcre硒ingpasses obtaintllee脏ct ex仇lsion ofme ofECAPat100℃ combiIlation oⅢgller h删朗-iIlg柚dfine—graills仃