Ion-induced spinodal-like decomposition of Fe-Ni-Cr Invar alloys
It was recently discovered that Fe-Cr-Ni alloys with 35 +-10 wt.% nickel decompose in a spinodal-like manner when irradiated with fast neutrons. This unexpected decomposition has many consequences. Not only do the anomalous properties characteristic of the Invar compositional regime disappear, but pronounced changes occur in both tensile properties and void swelling. Ion bombardment experiments have also been used to study void swelling and are now being used to study the decomposition. Microscopy and EDX examination of specimens employed in earlier void swelling studies confirm that ion irradiation induces spinodal-like decomposition in these alloys. The period and amplitude of the compositional fluctuations induced by irradiation are sensitive to temperature, nickel content and perhaps crystallographic direction, but are not very sensitive to chromium content or displacement rate.
- Research Organization:
- Hanford Engineering Development Lab., Richland, WA (USA); Wisconsin Univ., Madison (USA); General Electric Co., Sunnyvale, CA (USA)
- DOE Contract Number:
- AC06-76FF02170
- OSTI ID:
- 6948520
- Report Number(s):
- HEDL-SA-3280-FP; CONF-8510160-21; ON: DE87004091
- Country of Publication:
- United States
- Language:
- English
Similar Records
Spinodal-like decomposition of Fe-Ni and Fe-Ni-Cr alloys in both radiation and non-radiation environments
Spinodal-like decomposition of Fe-Ni and Fe-Ni-Cr Invar'' alloys during neutron or ion irradiation
Related Subjects
360106* -- Metals & Alloys-- Radiation Effects
ALLOYS
BEAMS
CHARGED PARTICLES
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
ENERGY RANGE
HIGH TEMPERATURE
INVAR
ION BEAMS
IONS
IRON ALLOYS
IRON BASE ALLOYS
MEV RANGE
MEV RANGE 01-10
NICKEL ALLOYS
NICKEL IONS
PHYSICAL RADIATION EFFECTS
QUANTITY RATIO
RADIATION EFFECTS
SWELLING