THE CREEP BEHAVIOUR OF HP-40-NB STEEL IN CARBURIZING AND OXIDIZING - CARBURIZING ENVIRONMENTS
Investigations of the creep behaviour of the 35Ni-25Cr centrifugally cast steel HP40Nb have been carried out at 1000 degrees C in two different atmospheres with purely carburizing (CH-4/H-2) exposure for continuous carburization and also for the precarburized alloy. In the CO-2 gas the formation of a protective oxide layer prevents carburization as long as surface cracks are not formed. Disruption of this layer, as occurs in a late creep stage, causes carburization but the creep properties are not significantly affected.
Bibliographic Reference: HIGH TEMPERATURE CORROSION IN ENERGY SYSTEMS, DETROIT, MICHIGAN (USA), SEPT. 17-19, 1984 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 31747 ORA
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Record Number: 1989123007000 / Last updated on: 1987-01-01
Available languages: en