Microstructure and properties of CuFe10 alloys treated by high current pulsed electron beam
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摘要: 研究了不同脉冲次数强流脉冲电子束表面改性对CuFe10合金组织及性能的影响。强流脉冲电子束处理CuFe10合金的重熔表面出现了火山坑和直径为100 nm到1 m的富铁球,表明了强流脉冲电子束处理CuFe10合金表面发生了液相分离。强流脉冲电子束脉冲轰击30次后,CuFe10合金表面的显微硬度与耐蚀性能均得到显著改善,主要是由于强流脉冲电子束轰击处理CuFe10合金表层引发的快速熔凝过程中表面发生了液相分离及晶粒细化的缘故。Abstract: The microstructure and properties of CuFe10 alloys irradiated by high current pulsed electron beam (HCPEB) with different pulse number were studied. The crater and Fe-rich spheres with diameter from 100 nm to 1 m existed on the remelting surface, which indicated that liquid phase separation occurred during HCPEB treatment. Compared with the initial sample, the microhardness and corrosion resistance of CuFe10 alloy after 30 pulses of HCPEB treatment were remarkably improved.It could be attributed to the liquid phase separation and grain refinement occurred on the surface of CuFe10 alloy in the process of rapid remelting and solidification induced by HCPEB.
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