PSI - Issue 42

Margot Pinson et al. / Procedia Structural Integrity 42 (2022) 471–479 Margot Pinson / Structural Integrity Procedia 00 (2019) 000–000

478

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Fe-8Al-1.1C steel. Moreover, the H-charged Fe-8Al-1.1C samples fracture at higher extension values than the H charged 100Cr6 samples, resulting in a much lower embrittlement index. Nevertheless, further optimization of the heat treatment of the lightweight Fe-8Al-1.1C material is necessary to avoid the formation of quench cracks and as such enhance the fracture behavior in air. Thus, the main lesson to be drawn from this work is that the industrial 100Cr6 bearing material has a very high susceptibility to HE and that there are lightweight alternatives that show very promising results concerning the resistance to HE, while maintaining the high hardness values required for bearing applications.

Acknowledgements

The authors are grateful for the following grants: senior postdoctoral fellowship of TD via the Research Foundation - Flanders (FWO - grant 12ZO420N) and the Special Research Fund (BOF) of UGent (grants BOF15/BAS/062 and BOF20/BAS/121 ) . Moreover, H. Springer wishes to acknowledge financial support through the Heisenberg Programm of the Deutsche Forschungsgemeinschaft.

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