The structure investigations and properties of VGM4-VI and VGM5-VI single crystal alloys with increased phosphorus quantity

Sidorov V.V., Rigin V.E., Filonova E.V., Timofeeva O.B.
UDC
669.018.44
DOI
10.18577/2307-6046-2014-0-3-2-2
Article PDF (Russian) (1.02 MB)
How to cite
Sidorov V.V., Rigin V.E., Filonova E.V., Timofeeva O.B. The structure investigations and properties of VGM4-VI and VGM5-VI single crystal alloys with increased phosphorus quantity // Proceedings of VIAM. 2014. No. 3. DOI: 10.18577/2307-6046-2014-0-3-2-2. URL: https://test.viam.ru/en/journal/2014/3/2
Keywords
phosphorus, lanthanum, structure, st
Abstract

The effect of phosphorus impurity on structure transformation and stress rupture properties of VGM4-VI and VGM5-VI single crystal alloys was investigated. It was es-tablished that a phosphorus at increased content (above 0,01%) reduces the stress rup-ture properties. Using the scanning electron microscope method it was established that a phosphorus at increased content (above 0,01%) increases a quantity of microcracks near rupture place, favours more intensive proceeding the process of hardenable γ'-phase coagulation, enriches the areas near eutectic γ'-phase and favours melt of the structure components at heat treamtent. For neutralization of harmful phosphorus influence in alloys the rear earth metal – lanthanum application is effective.

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