【摘 要】
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This paper reports,for the first time,an interesting phenomenon associated with the high current pulsed electron beam (HCPEB) treatment:unlimited supersaturated solid solution of Al and Si elements of
【机 构】
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School of Materials and Metallurgy,Northeastern University,Shenyang,China,110024
【出 处】
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第四届国际表面与界面科学与工程学术会议(The Fourth International Conference on S
论文部分内容阅读
This paper reports,for the first time,an interesting phenomenon associated with the high current pulsed electron beam (HCPEB) treatment:unlimited supersaturated solid solution of Al and Si elements of Al17.5Si alloy.The Al17.5Si alloy was HCPEB treated in order to see the effect of the fairly recent technology on coarse primary Si phase.After HCPEB treatment,coarse primary Si nearly disapears due to diffusion of Si element,at the same time,Al and Si diffused mutually,forming unlimited solid solution of Al and Si elements.The chemical compositions of Si and Al elements tend to gradually distribute,presenting halos morphology by EPMA analysis.Meanwhile,the microhardness of α-Al matrix was improved with increasing pulse number of HCPEB.
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