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In-situ XRD stress determinations have been performed during pure iron oxidation. The compressive stress is initially present in the substrate. Under the oxidizing conditions, the in-situ compressive stress level determined in the Feo scale during oxidation is not strongly dependent upon the presence of implanted yttrium. On blank and implanted specimens, the compressive stress varies from -400±80 MPa to 150±100 Mpa during the 30 hours oxidation. However, after cooling to room temperature, blank specimens show compressive residual stresses, implanted samples show residual tensile stress. The results also indicate that epitaxial relationships between the oxide scale, and the substrate can be as source of stress in the oxide scale. A way to lower compressive stress can be the use of yttrium ion implantation.

Additional information

Authors: BUSCAIL H, Institute Universitaire de Technologie (FR);SCIORA E, Institute Universitaire de Technologie (FR);STROOSNIJDER M F, JRC-IHCP, Ispra (IT);JACOB Y P, JRC-IHCP, Ispra (IT)
Bibliographic Reference: Article: Materials Science and Engineering A, 1998
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