Study of the high temperature oxidation and Kirkendall porosity in dissimilar welding joints between FE-CR-AL alloy and stainless steel AISI 310 after isothermal heat treatment at 1150 °C in air
Source abstract
Abstract
Dissimilar welded joints of Fe-Cr-Al alloy (23Cr-7Al) and AISI 310 austenitic stainless steel (25Cr-20Ni) were studied and characterized, before and after the isothermal heat treatment (IHT) of oxidation at 1150 °C for 936 h in air. The Fe-Cr-Al alloy was used as the welding consumable and the welding process used was gas-shielded tungsten arc welding (GTAW) with currents of 60, 80 and 130 amps, and welding speed 1, 1.1 and 1.3 mm/s. In the heat treated specimens, pore formation was observed as well as significant variations of Al contents in all-welded metals and formation of protective layer of alumina-Al2O3 on the oxidized surfaces particularly in the sample 1, welded at 60 amps and welding speed of 1 mm/s, that showed higher pore index and a greater deflection in the decrease of the Al content. The formation of Kirkendall pores occur due to the rapid diffusion of the aluminum from the all weld metals to the AISI 310 austenitic stainless steel, as was detected by the sample 1 mainly and especially by identifying the chromium content of the dissimilar alloy and the stainless steel. Keywords: GTAW, Kirkendall porosity, Alloys Fe-Cr-Al, AISI 310
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Intermetallics and Advanced Alloy Properties · Advanced Welding Techniques Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (22)
Show source-provided references
1. Design of lightweight multi-material automotive bodies using new material performance indices of thin-walled beams for the material selection with crashworthiness consideration10.1016/j.matdes.2010.07.018 ↗
2. Springer · 2011
3. Diffusion in mechanical alloys10.1016/S0924-0136(96)02826-9 ↗
4. Influence of intermetallic phases and Kirkendall porosity on the mechanical properties of joints between steel and aluminium alloys10.1016/j.msea.2011.02.057 ↗
5. On the formation and growth of intermetallic phases during interdiffusion between low-carbon steel and aluminum alloys10.1016/j.actamat.2010.11.023 ↗
6. Panteli · 2012
7. Haddadi · 2012
8. Effect of Cr/Al contents on the 475°C age-hardening in oxide dispersion strengthened ferritic steels10.1016/j.nme.2016.05.015 ↗
9. The effect of composition on marker movement and Kirkendall porosity in ternary alloys
10. Analysis of the Kirkendall effect, marker migration and pore formation10.1016/S1359-6454(01)00054-4 ↗
11. Prediction of Kirkendall shift and porosity in a binary and ternary diffusion couples10.1016/j.actamat.2004.06.039 ↗
12. The Kirkendall effect in multiphase diffusion10.1016/j.actamat.2003.10.007 ↗
13. Interface structure and bonding in abrasion circle friction stir spot welding: a novel approach for rapid welding aluminium alloy to steel automotive sheet10.1016/j.matchemphys.2012.03.017 ↗
14. Real-time radiographic observation of solidification behavior of Al-Si-Cu casting alloys with the variation of iron content10.2320/matertrans.F-M2011834 ↗
15. Void formation by Kirkendall effect in solder joints
16. 2008
17. A model of Kirkendall hollowing of core–shell nanowires and nanoparticles controlled by short-circuit diffusion10.1016/j.actamat.2014.09.050 ↗
18. Hollow hemisphere shell formation by pure Kirkendall porosity10.4028/www.scientific.net/DF.1.61 ↗
19. Soldering in die casting: aluminum alloy and die steel interactions
20. Critical assessment: dissimilar resistance spot welding of aluminium/steel: challenges and opportunities10.1080/02670836.2017.1334310 ↗
21. On the formation of intermetallics in Fe-Al system – an in situ XRD study10.1016/j.intermet.2012.08.020 ↗
22. Chemical analysis by X-ray diffraction