Journal Article

PUBDB-2024-00223

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png On the Evolution of Austenite During Tempering in High-Carbon High-Silicon Bearing Steel by High Energy X-Ray Diffraction

Ribamar, G. (Corresponding author)Extern* ; Miyamoto, G. ; Furuhara, T. ; Escobar, J. D.Extern* ; Ávila, J. A.Extern* ; Maawad, E.HZG*Hereon* ; Schell, N.HZG*Hereon* ; Oliveira, J. P.Extern* ; Goldenstein, H.Extern*

2024
Springer Boston

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Please use a persistent id in citations: doi:10.1007/s11661-023-07229-z

Abstract: The evolution of retained austenite in a high-carbon high-silicon bearing steel is explored byhigh energy X-ray diffraction during continuous heating, giving insights on the control ofaustenite stability or decomposition during fast tempering. Retained austenite suffers two stagesof slight decomposition into bainite below 400 C, while substantial decomposition intoferrite + cementite occurs above 500 C. Stress relief decreases retained austenite latticeanisotropy, previously introduced by the stresses caused by martensite formation duringquenching. The highest rate of austenite carbon enrichment occurs at 370 C. In comparison,the highest austenite carbon content is obtained at 466 C, clarifying a process window for quickretained austenite stabilization with minimal phase decomposition. Austenite achieves intrinsicstacking fault energy values as high as 30 mJ m2, avoiding the undesired transformation-inducedplasticity effect for bearing application.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Helmholtz-Zentrum Hereon (Hereon)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. CALIPSOplus - Convenient Access to Light Sources Open to Innovation, Science and to the World (730872) (730872)

Experiment(s):

1. PETRA Beamline P07 (PETRA III)

Appears in the scientific report 2024

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Springer ; DEAL Springer ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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