Journal Article

PUBDB-2024-07893

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png 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

Rabelo Coutinho Saraiva, B. (Corresponding author)DESY* ; da Silva, C. S. A.Extern* ; Herculano, L. F. G.Extern* ; Sarvezuk, P. W. C.Extern* ; Novotný, L.Extern* ; Silva, C. C.Extern* ; Keller, T. F.DESY* ; Masoumi, M.Extern* ; de Abreu, H. F. G.Extern* ; Beres, M.Extern*

2025
Elsevier Amsterdam

This record in other databases:    

Please use a persistent id in citations: doi:10.1016/j.msea.2024.147493

Abstract: 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.

---

Contributing Institute(s):

1. Nanolab (FS-NL)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)

Experiment(s):

1. DESY NanoLab: Microscopy
2. PETRA Beamline P07 (PETRA III)

---

Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

---