TY - JOUR
T1 - Microstructural Evolution in Additively Manufactured Fe-Cr-Ni Maraging Stainless Steel
AU - Shahriari, Ayda
AU - Sanjari, Mehdi
AU - Pirgazi, Hadi
AU - Fazeli, Fateh
AU - Shalchi Amirkhiz, Babak
AU - Kestens, Leo A.I.
AU - Mohammadi, Mohsen
PY - 2022
Y1 - 2022
N2 - In this work, the effect of heating rate on the phase transformation temperatures was investigated using dilatometry analysis. Continuous heating and isothermal holding above Ac3 temperature on microstructural evolutions in additively manufactured (AM) parts of Fe-Cr-Ni maraging stainless steel were studied. The microstructural features developed within the heating processes were characterized employing electron backscatter diffraction and transmission electron microscopy. Austenite reversion was found to take place in two steps for the AM parts by a diffusive mechanism as well as the precipitation reactions. Although grain refinement occurred during the austenite reversion of the continuously heated samples, the microstructure showed a coarser grain size after isothermal heating. The crystallographic orientations developed after the heating processes were different from those of the initial ones implying the absence of the austenite memory effect.
AB - In this work, the effect of heating rate on the phase transformation temperatures was investigated using dilatometry analysis. Continuous heating and isothermal holding above Ac3 temperature on microstructural evolutions in additively manufactured (AM) parts of Fe-Cr-Ni maraging stainless steel were studied. The microstructural features developed within the heating processes were characterized employing electron backscatter diffraction and transmission electron microscopy. Austenite reversion was found to take place in two steps for the AM parts by a diffusive mechanism as well as the precipitation reactions. Although grain refinement occurred during the austenite reversion of the continuously heated samples, the microstructure showed a coarser grain size after isothermal heating. The crystallographic orientations developed after the heating processes were different from those of the initial ones implying the absence of the austenite memory effect.
UR - http://www.scopus.com/inward/record.url?scp=85125255261&partnerID=8YFLogxK
U2 - 10.1007/s11661-022-06633-1
DO - 10.1007/s11661-022-06633-1
M3 - Article
AN - SCOPUS:85125255261
VL - 53
SP - 1771
EP - 1792
JO - Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science
SN - 1073-5623
IS - 5
ER -