An icosahedral phase in annealed austenitic stainless steel?
作者:
H. Sidhom,
R. Portier,
期刊:
Philosophical Magazine Letters
(Taylor Available online 1989)
卷期:
Volume 59,
issue 3
页码: 131-139
ISSN:0950-0839
年代: 1989
DOI:10.1080/09500838908206334
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Austenitic 316L stainless steel alloys annealed at 550°C for 100 h present a few ferrite precipitates surrounded by a new interfacial phase, here called the I-phase, that develops at the level of the austenite/ferrite interface. The I-phase presents the typical patterns of an icosahedral quasicrystal with a primitive hypercubic lattice of parameter A = 0.63 nm. The marked orientation relationships between the I-phase and the ferrite precipitates strongly suggest that this phase results from a decomposition of the ferrite and not of the austenite. The I-phase is metastable and transforms eventually after annealing at 700°C to the stable crystalline σ-phase.
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