Hostname: page-component-8448b6f56d-mp689 Total loading time: 0 Render date: 2024-04-18T08:11:49.876Z Has data issue: false hasContentIssue false

Effect of Boron on the Amorphization of Zr-Ti-Ni-Cu Alloy

Published online by Cambridge University Press:  06 March 2019

J. D. Makinson
Affiliation:
Center for Materials Research and Analysis Department of Mechanical Engineering University of Nebraska-Lincoln Lincoln, NE 68588
R. J. De Angelis
Affiliation:
Center for Materials Research and Analysis Department of Mechanical Engineering University of Nebraska-Lincoln Lincoln, NE 68588
S. C. Axtell
Affiliation:
Center for Materials Research and Analysis Department of Mechanical Engineering University of Nebraska-Lincoln Lincoln, NE 68588
Get access

Abstract

The mechanical alloying process continually deforms, cold welds, and breaks apart metal powder particles. During the process of mechanical alloying elemental crystalline powders can produce an amorphous alloyed powder. Consolidation of these powders by powder metallurgy techniques can produce amorphous bulk metals.

Two Alloys 62.24 Zr-10.89 Ti-9.71 Ni-13.14 Cu-4.02 B and 64.84 Zr-11.35 Ti-11.12 Nt-13.69 Cu weight percent were mechanically alloyed for 45 hours by a SPEX 800 high energy ball-mill. The changes in structure were monitored by X-ray diffraction after every 5 hours of milling. Both powder compositions became amorphous after 15 hours of milling. New compounds began to form during milling to 35 hours. Milling for longer times produced no further structure changes. The milled samples were annealed at 950°C for 1 hour which produced a complex set of crystalline materials. The crystalline phases containing boron have larger lattice parameters and less tendency for grain growth.

Type
X. Structural and Other Applications of Powder Diffraction
Copyright
Copyright © International Centre for Diffraction Data 1994

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Brack, H.A., T. Christman, A.J, Rosakis, and Johnson, W.L.Quasi-Static Constitutive Behavior of Zr4j.25Tij3.75Ni10Cu12.5Be22.5 Bulk Amorphous Alloys,” Scripta Metallurgica Vol. 30 pp 429434, 1994 Google Scholar
2. Aning, A.O., Wang, Z., and Courtney, T.H.Tungsten Solution Kinetics and Amorphization of Nickel in Mechanically Alloyed Ni-W Alloys”, Acta Metall. Mater. Vol 41, No. 1, pp 165174 199.Google Scholar