TY - JOUR
T1 - Impact of Al and Cr on the Microstructure and Corrosion Behavior of AlCrFeMn Alloy Systems
AU - Gesualdi, Jarrod
AU - Asghari-Rad, Peyman
AU - Nigl, Thomas P.
AU - Blanchard, Cameron F.
AU - Kim, Hojong
N1 - Publisher Copyright:
© This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2025.
PY - 2025/7
Y1 - 2025/7
N2 - This study systematically investigated the Fe3Mn base alloy with the addition of Cr and Al, with the aim of achieving a harmonious balance between microstructure, mechanical properties, and corrosion resistance. An arc melting technique was employed to precisely craft the alloys, which were characterized using X-ray diffraction, electron microscopy, and hardness testing. The corrosion behavior of the alloys was assessed through polarization measurements to discern their corrosion resistance in a 0.6 M NaCl solution in complement with immersion testing. The electrochemical testing indicated a considerable improvement in passive film stability with Cr addition, while Al exhibited a moderate effect. However, immersion tests over 24 hours in the same solution highlighted the distinct advantage of Al, notably reducing the number of pits due to alterations in inclusion chemistry and distribution. X-ray photoelectron spectroscopy confirmed the participation of both Cr and Al in forming the passive oxide film under exposure conditions. This intricate interplay among alloying constituents presents alloys with advantageous properties conducive to various industrial applications, underlining their cost effectiveness and reduced material density as significant merits.
AB - This study systematically investigated the Fe3Mn base alloy with the addition of Cr and Al, with the aim of achieving a harmonious balance between microstructure, mechanical properties, and corrosion resistance. An arc melting technique was employed to precisely craft the alloys, which were characterized using X-ray diffraction, electron microscopy, and hardness testing. The corrosion behavior of the alloys was assessed through polarization measurements to discern their corrosion resistance in a 0.6 M NaCl solution in complement with immersion testing. The electrochemical testing indicated a considerable improvement in passive film stability with Cr addition, while Al exhibited a moderate effect. However, immersion tests over 24 hours in the same solution highlighted the distinct advantage of Al, notably reducing the number of pits due to alterations in inclusion chemistry and distribution. X-ray photoelectron spectroscopy confirmed the participation of both Cr and Al in forming the passive oxide film under exposure conditions. This intricate interplay among alloying constituents presents alloys with advantageous properties conducive to various industrial applications, underlining their cost effectiveness and reduced material density as significant merits.
UR - https://www.scopus.com/pages/publications/105005595995
UR - https://www.scopus.com/pages/publications/105005595995#tab=citedBy
U2 - 10.1007/s11661-025-07787-4
DO - 10.1007/s11661-025-07787-4
M3 - Article
AN - SCOPUS:105005595995
SN - 1073-5623
VL - 56
SP - 2683
EP - 2694
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 7
ER -