Abstract
The characterization and fracture toughness with hard coatings formed at the surface of gray cast irons class 30 is evaluated in the present study. The formation of hard coatings was obtained out means of the pack boriding process; the treatment was carried out at temperatures of 1173 and 1223 K during 6 hours. The layers were evaluated by the techniques of X-ray diffraction (XRD), energy dispersive spectrometry (EDS) and microindentation across the thickness of the iron boride layer. Three-point bending tests are carried out to examine the fracture toughness IC K of gray cast irons boriding according to the ASTM 399 standard. Consequently, the stress intensity factor was evaluated by means of the finite element method (FEM) using the package ANSYS 11. 0 creating a two-dimensional model with elements of singularity around the tip crack. The results were compared with the experiments and have been found to be in good correlation.
Original language | English |
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Title of host publication | Diffusion in Solids and Liquids IX |
Publisher | Trans Tech Publications Ltd |
Pages | 248-253 |
Number of pages | 6 |
Volume | 353 |
ISBN (Print) | 9783038351108 |
DOIs | |
State | Published - 2014 |
Event | 9th International Conference on Diffusion in Solids and Liquids Mass Transfer - Heat Transfer - Microstructure and Properties - Nanodiffusion and Nanostructured Materials, DSL 2013 - Madrid, Spain Duration: 24 Jun 2013 → 28 Jun 2013 |
Conference
Conference | 9th International Conference on Diffusion in Solids and Liquids Mass Transfer - Heat Transfer - Microstructure and Properties - Nanodiffusion and Nanostructured Materials, DSL 2013 |
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Country/Territory | Spain |
City | Madrid |
Period | 24/06/13 → 28/06/13 |
Keywords
- FEM
- Fracture toughness
- Gray cast irons
- Hard coatings
- Three-point bending