Effect of aluminizing and oxidation on the thermal fatigue damage of hot work tool steels for high pressure die casting applications - IMT Mines Albi-Carmaux Access content directly
Journal Articles International Journal of Fatigue Year : 2019

Effect of aluminizing and oxidation on the thermal fatigue damage of hot work tool steels for high pressure die casting applications

Mehdi Salem
Sabine Le Roux
Gilles Dour
  • Function : Author
Farhad Rezai-Aria

Abstract

The interaction between thermal fatigue and aluminizing and/or oxidation is investigated using an experimental approach based on decoupling of mechanisms. Virgin and pre-aluminized steel specimens are tested in air and nitrogen between 100 and 650 °C. Homogeneous uniaxial micro-crack network forms on the oxidised or pre-aluminized surface in air, with a better resistance to micro-cracking for the intermetallic coating. The propagation of the micro-cracks is delayed in nitrogen, whilst no evidence of micro-cracking is observed on the virgin specimen. The premature cracking of the steel depends on the formation of the superficial micro-crack network, and the crack propagation is assisted by oxidation.
Fichier principal
Vignette du fichier
effect-of-aluminizing-and-oxidation.pdf (5.66 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01898697 , version 1 (15-02-2019)

Identifiers

Cite

Mehdi Salem, Sabine Le Roux, Gilles Dour, Pascal Lamesle, Karim Choquet, et al.. Effect of aluminizing and oxidation on the thermal fatigue damage of hot work tool steels for high pressure die casting applications. International Journal of Fatigue, 2019, 119, pp.126-138. ⟨10.1016/j.ijfatigue.2018.09.018⟩. ⟨hal-01898697⟩
131 View
394 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More