TY  - JOUR
AU  - Rabelo Coutinho Saraiva, Breno
AU  - da Silva, Carlos Samuel Alves
AU  - Herculano, Luis Flávio Gaspar
AU  - Sarvezuk, Paulo Willian Carvalho
AU  - Novotný, Ladislav
AU  - Silva, Cleiton Carvalho
AU  - Keller, Thomas F.
AU  - Masoumi, Mohammad
AU  - de Abreu, Hamilton Ferreira Gomes
AU  - Beres, Miloslav
TI  - Effect of cyclic loading on microstructure and plastic deformation in heat-treated Co–28Cr–6Mo alloy fabricated via laser powder bed fusion: An in situ synchrotron X-ray diffraction study
JO  - Materials science & engineering / A
VL  - 920
SN  - 0921-5093
CY  - Amsterdam
PB  - Elsevier
M1  - PUBDB-2024-07893
SP  - 147493
PY  - 2025
AB  - We present a systematic microstructure-oriented plasticity investigation of an additively manufactured cobaltbasedalloy aiming to relate microstructural changes to the fatigue resistance. A load-controlled cyclic test inthe low-cycle fatigue regime was utilized to study mechanical response and microstructural changes in the alloyafter reverse phase transformation heat treatment. Deformation-induced FCC → HCP phase transformation wasfollowed using in situ synchrotron X-ray diffraction combined with ex situ electron backscatter diffraction andscanning electron microscopy. Scanning transmission electron microscopy provided experimental evidence of thepresence of precipitates in the solution annealed sample. It was found, that a stepwise increase in plasticdeformation is attributed to nucleation and growth of different martensitic crystallographic variants. These insightsinto plasticity and microstructural changes suggest that the reverse phase transformation heat treatment isan effective approach for improving the fatigue resistance of low stacking fault energy alloys, that are susceptibleto deformation-induced martensitic transformation.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001362355200001
DO  - DOI:10.1016/j.msea.2024.147493
UR  - https://bib-pubdb1.desy.de/record/619758
ER  -