为提高高强镁合金的力学性能,在 Mg-3Gd-2Zn-0．5Zr 镁合金中添加了1．5％纳米 Ti,对制备出的铸态镁合金试样进行了 OM、SEM、XRD 分析,并进行了力学性能、阻尼性能和耐磨损性能的测试与分析.结果表明,纳米金属钛的添加,显著提高了合金的力学性能、阻尼性能和耐磨损性能,使合金在6×10－5,20×10－5,40×10－5应变振幅下的阻尼性能分别提高54％,77％和81％；250℃磨损体积和摩擦因数分别减小68％,11％.借此为高强镁合金的纳米改性研究提供进一步指导与借鉴.
In order to improve the high mechanical properties of automobile magnesium alloys,as-cast magnesi-um alloy specimens have been prepared by adding 1.5% nano titanium into Mg-3Gd-2Zn-0.5Zr magnesium al-loy,of which the mechanical properties,damping properties and wear resistance analyses,and OM,SEM, XRD analysis,have carried on,respectively.The analysis results showed that the nano titanium addition can improve the alloy mechanical properties,and significantly improve the mechanical properties,damping perform-ance and wear resistance properties of the alloy,of which damping performance under the strain amplitude of 6×10 -5 ,20×10 -5 ,40 × 10 -5 increased by 54%,77% and 81%,respectively;the wear volume and friction factor at 250 ℃ decreased by 68% and 1 1% respectively.This provides further guidance and reference for nano modified studies of high strength magnesium alloy.
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