A study of Ni-based refractory alloys via anomalous scattering techniques

Journal Article · Sun Oct 01 00:00:00 EDT 2006 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.2260824· OSTI ID:20884767

Tokarz, Michelle L; Bilello, John C ^[1]

---

1. Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109 and Center for Nanomaterials Science, University of Michigan, Ann Arbor, Michigan 48109 (United States)

Anomalous x-ray scattering methods provided means to probe the local interactions of specific chemical pairs in a Ni-Nb-Sn sequence. Data near and far from the absorption edges of individual constituent atoms were obtained to calculate differential distribution functions, revealing the atomic arrangements. The compositional fluctuations throughout a typical Ni{sub 60}Nb{sub 40-x}Sn{sub y} sample is described as alternating Ni-rich and Nb-rich clusters of {approx}25 A ring dimensions. This nonrandom distribution of atomic species may partially explain the failure of previous modeling efforts of bulk metallic glasses to explain their mechanical behavior and thermal stability.

• OSTI ID: 20884767
• Journal Information: Journal of Applied Physics, Vol. 100, Issue 7; Other Information: DOI: 10.1063/1.2260824; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION
CHEMICAL ANALYSIS
CHEMICAL BONDS
DISTRIBUTION FUNCTIONS
HEAT RESISTING ALLOYS
METALLIC GLASSES
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
SIMULATION
TIN ALLOYS
X-RAY DIFFRACTION