Surface composite nanostructures of AZ91 magnesium alloy induced by high current pulsed electron beam treatment

Improving corrosion and wear resistance of FV520B steel by high current pulsed electron beam surface treatment

“…The best modification effect of FV520B steel should be attributed to the reasonable low carbon element. It is reported that the excessive carbon element would inhibit the martensite phase transformation of steel and leave a large quantity of residual austenite phases in the surface modified layer [18,20]. For the case of 316 steel, there miss the important role of martensite phase transformation, as a result, the surface modification effect was weakened relatively.…”

“…High current pulsed electron beam (HCPEB) has been proved to be a powerful tool for surface treatment of materials in recent years [11][12][13][14][15][16][17][18][19][20]. Along with the high electron flux rushing into the surface layer of material within a short pulse time of microseconds, the rapid heating (10 9-10 K s À1 ) to melt or evaporation, thermal stress impact and self-quenching (10 8-9 K s À1 ) processes occur intensively [21,22], which give rise to the non-equilibrium surface microstructure accompanied by the modified physical and chemical properties of materials.…”

Corrosion Resistance of AZ91 Mg Alloy Modified by High-Current Pulsed Electron Beam

“…As a new surface modification technology of materials, high-current pulsed electron beam (HCPEB) has been applied on metals like steels [17,18], Ti alloys [19] and Mg alloys [20][21][22] due to its high efficiency, simple operability, reliability and comprehensive performance. The electron beam with high energy density allows achieving heating rates of the target of up to * 10 9 K/s within a short pulse of microseconds (* 4 ls).…”

“…In fact, the HCPEB had been used to modify the microstructure and wear resistance of AZ91 alloy [20][21][22]. Based on the investigation of Li et al [22], the homogenous nanostructures could be obtained on the surface of AZ91 Mg alloy by HCPEB treatment.…”

“…In fact, the HCPEB had been used to modify the microstructure and wear resistance of AZ91 alloy [20][21][22]. Based on the investigation of Li et al [22], the homogenous nanostructures could be obtained on the surface of AZ91 Mg alloy by HCPEB treatment. Nevertheless, the formation of supersaturated Al element and deformation layer induced by stress waves on the surface would also improve the AZ91 alloy's surficial wear resistance [20].…”