Detail publikace

Isothermal oxidation behavior of experimental Ti-Al-Si alloys at 700 °C in air

TKACHENKO, S. DATSKEVICH, O. DVOŘÁK, K. SPOTZ, Z. KULAK, L. ČELKO, L.

Originální název

Isothermal oxidation behavior of experimental Ti-Al-Si alloys at 700 °C in air

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

In the present work the oxidation kinetics of a series of experimental TiAlSi based alloys, additionally alloyed by zirconium and tin, was studied upon isothermal exposure at 700 C in ambient air and compared with that of a commercially available Ti6242 alloy. Examinations of the oxide scale microstructure, its phase composition and crystal morphology along with the measurements of the alpha-case thickness were performed in order to elucidate the oxidation mechanism of TiAlSi based alloys. The oxidation rates of the experimental alloys obeyed a parabolic relationship and were 1.5e2 times lower than those of the reference Ti6242 alloy. The alloying of the base Ti6Al1.4Si alloy with zirconium strongly reduced its oxidation rate, while the effect of tin addition appeared to be slightly deleterious. The zirconium addition reduced the thickness of the oxide scale and hindered recrystallization of the rutile crystals in the surface oxide layer. At the same time, the additional alloying with tin had practically no effect on the size of rutile crystals. The thickness of alpha-case was found to depend on the oxidation dwell time and followed a parabolic relationship. The most noticeable effect in reducing the alpha-case thickness was provided by zirconium addition, while the effect of additional alloying with tin on alphacase was slightly unfavorable.

Klíčová slova

Titanium alloys; Silicon; Oxidation; Oxide scale; Diffusion

Autoři

TKACHENKO, S.; DATSKEVICH, O.; DVOŘÁK, K.; SPOTZ, Z.; KULAK, L.; ČELKO, L.

Vydáno

31. 1. 2017

Nakladatel

Elsevier

Místo

Netherlands

ISSN

0925-8388

Periodikum

Journal of Alloys and Compounds

Ročník

694

Číslo

1

Stát

Švýcarská konfederace

Strany od

1098

Strany do

1108

Strany počet

10

URL

http://dx.doi.org/10.1016/j.jallcom.2016.10.044

BibTex

@article{BUT130386,
  author="Serhii {Tkachenko} and Oleg {Datskevich} and Karel {Dvořák} and Zdeněk {Spotz} and Leonid {Kulak} and Ladislav {Čelko}",
  title="Isothermal oxidation behavior of experimental Ti-Al-Si alloys at 700 °C in air",
  journal="Journal of Alloys and Compounds",
  year="2017",
  volume="694",
  number="1",
  pages="1098--1108",
  doi="10.1016/j.jallcom.2016.10.044",
  issn="0925-8388",
  url="http://dx.doi.org/10.1016/j.jallcom.2016.10.044"
}