Effects of Sample Preparation on the Mechanical Properties of AlMgB14

Journal Article · Tue Jan 01 00:00:00 EST 2008 · High Pressure Research

DOI:https://doi.org/10.1080/08957950701846893· OSTI ID:960075

Muthu, D; Chen, B; Cook, B; Kruger, M

Using synchrotron-based x-ray diffraction we have studied the behaviour of two different preparations of the super hard material AlMgB14 at pressures up to 41 GPa. Analysis of lattice parameter data from the high-pressure x-ray measurements provides a bulk modulus (K) of 196 GPa and a pressure derivative of the bulk modulus (K') of 4.2 for sample 1, which was prepared by comminuting the elements and then hot pressing the sample. For sample 2, which was prepared by comminuting the elements and then cold pressing, K=264 GPa and K'=3.7. The differences in K and K' clearly demonstrate that sample preparation significantly affects the mechanical properties of AlMgB14.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
• Sponsoring Organization: Doe - Office Of Science
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 960075
• Report Number(s): BNL-83061-2009-JA; HPRSEL; TRN: US201016%%1219
• Journal Information: High Pressure Research, Vol. 28; ISSN 0895-7959
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COLD PRESSING
HOT PRESSING
LATTICE PARAMETERS
MECHANICAL PROPERTIES
SAMPLE PREPARATION
X-RAY DIFFRACTION
national synchrotron light source