Structure and mechanical characteristics of the hypereutectic silumin subjected to pulsed electron beam treatment

E. A. Petrikova, A. D. Teresov, M. E. Rygina, Yu F. Ivanov

Research output: Contribution to journalConference articlepeer-review

Abstract

Silumin, aluminum with silicon alloy, is a promising material used for the manufacture of medium-loaded machine parts and mechanisms. High brittleness is one of the main drawbacks of hypereutectic silumin. Modification of a hypereutectic silumin (18-20 wt.% Si) was carried out by irradiating the samples with an intense pulsed electron beam. It was established that irradiation of cast hypoeutectic silumin by an electron beam leads to a significant reduction in the number of micropores, forming a high-speed cellular crystallization structure with a cell size of (0.4-0.6) μm. An irradiation mode allowing to increase the silumin surface layer hardness by more than 4 times, wear resistance - by 1.2 times, to increase ductility by 1.2 times in relation to the initial material was detected (35 J / cm2; 200 μs, 20 imp. 0.3 s-1).

Original languageEnglish
Article number012060
JournalIOP Conference Series: Materials Science and Engineering
Volume597
Issue number1
DOIs
Publication statusPublished - 23 Aug 2019
Event16th International Conference of Students and Young Scientists on Prospects of Fundamental Sciences Development, PFSD 2019 - Tomsk, Russian Federation
Duration: 23 Apr 201926 Apr 2019

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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