机械零件用含钒压铸铝合金的性能优化  

Performance optimization of die casting aluminum alloy containing vanadium for mechanical parts

作　　者：吴刚[1] 刘之强 Wu Gang;Liu Zhiqiang(School of Mechanical and Electrical Engineering,Liaoyang Vocational College of Technology,Liaoyang 111004,Liaoning,China;School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China)

机构地区：[1]辽阳职业技术学院机电工程学院,辽宁沈阳111004 [2]大连理工大学材料科学与工程学院,辽宁大连116024

出　　处：《钢铁钒钛》2021年第3期193-198,共6页Iron Steel Vanadium Titanium

基　　金：辽宁省教育厅科研项目课题,项目编号:w2015263。

摘　　要：采用不同压射比压和压射速度进行了机械零件用含钒压铸铝合金Al-10Si-2.5Cu-0.3V的压铸试验,并进行了合金力学性能和耐磨损性能的测试与分析。结果表明:随压射比压由650 MPa增大到750 MPa、压射速度从250 mm/s加快到450 mm/s时,合金的力学性能和耐磨损性能均先提高后下降。合金的压射比压优选725 MPa、压射速度优选350 mm/s。与压射比压650 MPa相比,当压射比压增加到725 MPa时合金的抗拉强度增大18 MPa、断后伸长率减小0.6%、磨损体积减小8×10^(-3) mm^(3)。与压射速度450 mm/s相比,当压射速度为350 mm/s时合金的抗拉强度增大20 MPa、断后伸长率减小0.7%、磨损体积减小了10×10^(-3) mm^(3)。The die-casting experiments of Al-10Si-2.5Cu-0.3V die-casting aluminum alloy containing vanadium for mechanical parts were carried out with different injection ratio and injection speed,and the mechanical properties and wear resistance of the alloy were tested and analyzed.The results show that the mechanical properties and wear resistance of the alloy increase firstly and then decrease with the increase of injection pressure from 650 MPa to 750 MPa and injection speed from 250 mm/s to 450 mm/s.The injection specific pressure and injection velocity of the alloy are 725 MPa and 350 mm/s,respectively.Compared with results from injection pressure of 650 MPa,when the injection pressure increases to 725 MPa,the tensile strength increases by 18 MPa,total elongation after fracture decreases by 0.6%,and the wear volume decreases by 8×10^(-3) mm^(3).Compared with results from injection rate of 450 mm/s,when the injection rate is 350 mm/s,the tensile strength of the alloy increases by 20 MPa,and total elongation after fracture decreases by 0.7%,and the wear volume decreases by 10×10^(-3) mm^(3).

关 键 词：含钒压铸铝合金 Al-10Si-2.5Cu-0.3V 机械零件 压射比压 压射速度 力学性能 耐磨损性能 

分 类 号：TF821[冶金工程—有色金属冶金] TG27[金属学及工艺—铸造]