Effects of Ion Irradiation on Metallic-Glasses and High-Entropy Alloys
EMSL Project ID
44641
Abstract
Ion irradiation is possible to cause amorphization in crystalline materials, leading to mechanical performance degradation. Bulk metallic glasses (BMGs) have no such problems, because they are originally amorphous. This feature makes BMGs a promising candidate for nuclear industry use. The size effect of metallic glasses (MGs) indicates a better ductility for small size samples. Using ion irradiation in both Zr50Cu30Al20 and Zr50Cu30Al10Ni10 BMGs and coatings, we are aiming to study ion irradiation induced structure evolution and the corresponding mechanical property change. High entropy alloys (HEAs) are newly developed materials which also show promising applications in the nuclear industry. HEAs usually exhibit a primary crystalline solid-solution phase, with complete substitutional disorder. Although ion irradiation will result in an amorphous phase on the surfaces of HEAs, a 'self-healing' recrystallization of the solid-solution phase is expected at high temperature. The structure of Alx(CoCrCuFeNi)100-x HEA is well understood. In this proposed work, we are trying to understand the ion irradiation induced phase transformation, and mechanical properties. By understanding the structure change and the corresponding mechanical properties, it is possible to guide the design of MGs and HEAs, which makes those materials great potential application in the nuclear industry.
Project Details
Project type
Large-Scale EMSL Research
Start Date
2011-10-01
End Date
2012-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members