挤压对a390合金组织与性能的影响

《挤压对a390合金组织与性能的影响》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、AbstractalloyThewearresistanceofA390alloyisimprovedbytheextrudedtreatment.Theprimarystageisabrasivewear.Withthetimeincreasing,itchangestotheadhesivewear.Extrusionbroketheprimarysiliconandeutecticsiliconanddecreasesthesizeofphasestoreducetheprobabilityofsiliconparticles

2、hedding.Besides,itreducedoreliminatedtheinternaldefectssuchasshrinkageandporosity,resultinginincreasesindensityandthebondingstrengthofsoftandhardphases.ThereforeresistantwearpropertiesofA390alloywereincreasedafterextrusion..Keywords:A390alloy,hypereutecticAl-Sialloy,mi

3、crostructure,wearbehavior-III-万方数据目录目录摘要.................................................................................................................IABSTRACT......................................................................................................II第1章

4、绪论...................................................................................................11.1课题来源及研究的目的和意义...........................................................11.2过共晶Al-Si合金组织及细化............................................................11.3过共晶Al-Si合

5、金的磨损....................................................................91.4论文主要研究内容............................................................................12第2章实验材料与研究方法..........................................................................142.1研究方案............

6、................................................................................142.2实验材料制备....................................................................................152.3试样制备.....................................................................................

7、.......152.3.1组织观察试样.........................................................................152.3.2拉伸试样制备.........................................................................162.3.3线膨胀试样制备......................................................................172.3.

8、4磨损试样制备.........................................................................172.4实验方法............................