Accession Number:

ADA582014

Title:

The Influence of Pressure on the Phase Stability of Nanocomposite Fe89Zr7B4 during Heating from Energy Dispersive X-ray Diffraction

Descriptive Note:

Journal article

Corporate Author:

CALIFORNIA INST OF TECHNOLOGY PASADENA W M KECK LAB

Personal Author(s):

• Leary, A. M.
• Lucas, M. S.
• Ohodnicki, P. R.
• Kernion, S. J.
• Mauger, L.
• Park, C.
• Kenney-Benson, C.
• McHenry, M. E.

Report Date:

2013-01-01

Pagination or Media Count:

5.0

Abstract:

Nanocomposite materials consisting of small crystalline grains embedded within an amorphous matrix show promise for many soft magnetic applications. The influence of pressure is investigated by in situ diffraction of hammer milled Fe89Zr7B4 during heating through the chi - gamma Fe transition at 0.5, 2.2, and 4.9 GPa. The changes in primary and secondary crystallization onset are described by diffusion and the energy to form a critical nucleus within the framework of classical nucleation theory.

Descriptors:

• *DISPERSIONS
• *ENERGY
• *HEATING
• *PHASE
• *STABILITY
• *X RAY DIFFRACTION
• AMORPHOUS MATERIALS
• CRYSTALLIZATION
• MAGNETIC FIELDS
• NUCLEI
• TRANSITIONS

Subject Categories:

• Physical Chemistry
• Non-electrical Energy Conversion
• Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE