Modification of Hypereutectic Silumin Surface Layer by a High-Intensity Pulse Electron Beam

Ivanov, Yu. F.; Ласковнев, А. П.; Тересов, А. Д.; Cherenda, N.N.; Углов, В.В.; Петрикова, Е. А.; Astashynskaya, M. V.; Koval, N. N.

doi:10.1615/hightempmatproc.2015015827

Cited by 3 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The following electron-beam treatment parameters were used: the energy of accelerated electrons was 18 keV, the energy density of the electron beam was 40 J/cm 2 , the pulse repetition rate was 0.3 s -1 , the pulse duration was 200 µs and the number of pulses was 20. The result of the calculation of the temperature profile formed in the surface layer of silumin showed that the chosen mode of the treatment allows carrying out high-speed melting not only for Al-Si eutectics, but also for silicon crystals and intermetallic additions [9,10]. The research of element and phase structure, defects of the modified surface structure was carried out by optical and scanning electron microscopy and X-ray diffraction analysis.…”

Section: Methodsmentioning

confidence: 99%

Mechanical Properties and Structure of the Hypereutectic Silumin Treated by an Electron Beam

Rygina

Ivanov

Ласковнев

et al. 2017

KEM

View full text Add to dashboard Cite

Treatment of hypereutectic structure silumin (18-24 wt% of Si) by an intense pulsed electron beam of submillisecond duration is carried out. Formation of submicro- and nanocrystalline structure in the surface layer is revealed, which is caused by ultrahigh (up to 108 K/s) cooling rates of the melted layer. It is established that the modification of the silumin surface layer by an electron beam increases its hardness by 5 times.

show abstract

Section: Methodsmentioning

confidence: 99%