摘要
在阻尼性能最佳的Fe-17Mn二元合金中加入质量分数5%铬元素以及1%的铝、钛或镍,采用真空感应熔炼法制备Fe-17Mn,Fe-17Mn-5Cr,Fe-17Mn-5Cr-1Al,Fe-17Mn-5Cr-1Ti和Fe-17Mn-5Cr-1Ni合金,经锻造和固溶处理后,研究了铬、铝、钛、镍元素对合金阻尼性能、力学性能和耐腐蚀性能的影响。结果表明:添加铬元素后,合金强度显著提高,耐腐蚀性能增强,在较低应变振幅(200×10-6~900×10-6)下的阻尼性能提高,在高应变振幅(大于900×10-6)下的阻尼性能降低;在Fe-17Mn-5Cr合金中添加质量分数1%的铝元素或钛元素后,合金的耐腐蚀性能变化不大,强度降低,其中添加钛后的阻尼性能变差,添加铝后的阻尼性能变化不大;在Fe-17Mn-5Cr合金中添加质量分数1%镍元素后,合金的强度和阻尼性能变化不大,耐腐蚀性能略有降低,但仍优于Fe-17Mn合金的;Fe-17Mn-5Cr-1Ni合金的综合性能最优异。
5wt%Cr,1wt%Al,1wt%Ti or 1wt%Ni were added to the Fe-17Mn binary alloy which had the best damping property,and then Fe-Mn,Fe-17Mn,Fe-17Mn-5Cr-1Al,Fe-17Mn-5Cr-1Ti and Fe-17Mn-5Cr-1Ni alloys were prepared by vacuum induction smelting.After forging and solution treatment,the effect of Cr,Al,Ti,Ni elements on damping property,mechanical properties and corrosion resistance of the alloys was studied.The results show that after adding Cr element,the strength of the alloy increased significantly and the corrosion resistance was improved;the damping property increased at low strain amplitude(200×10-6-900×10-6),and decreased at high strain amplitude(greater than 900×10-6).The corrosion resistance of the alloy after adding 1wt%Al element or Ti element into Fe-17Mn-5Cr alloy changed little,but the strength decreased;the damping property of the alloy after adding Ti became worse,but the damping property after adding Al changed little.Compared with Fe-17Mn alloy,the strength and the damping property of the alloy after adding 1 wt%Ni element into Fe-17Mn-5Cr alloy changed little;the corrosion resistance was reduced slightly,but still better than that of Fe-17Mn alloy.Fe-17Mn-5Cr-1Ni alloy had the best comprehensive properties.
作者
曹萍
蔡志刚
CAO Ping;CAI Zhigang(Zhejiang Jiuli Hi-Tech Metals Co.,Ltd.,Huzhou 313008,China)
出处
《机械工程材料》
CAS
CSCD
北大核心
2020年第3期8-12,共5页
Materials For Mechanical Engineering
基金
国家自然科学基金青年基金资助项目(51801194)。
