Rapid Melt and Resolidification of Surface Layers Using Intense, Pulsed Ion Beams Final Report
The emerging technology of pulsed intense ion beams has been shown to lead to improvements in surface characteristics such as hardness and wear resistance, as well as mechanical smoothing. We report hereon the use of this technology to systematically study improvements to three types of metal alloys - aluminum, iron, and titanium. Ion beam tieatment produces a rapid melt and resolidification (RMR) of the surface layer. In the case of a predeposited thin-fihn layer, the beam mixes this layer into the substrate, Ieading to improvements that can exceed those produced by treatment of the alloy alone, In either case, RMR results in both crystal refinement and metastable state formation in the treated surface layer not accessible by conventional alloy production. Although more characterization is needed, we have begun the process of relating these microstructural changes to the surface improvements we discuss in this report.
- Research Organization:
- Sandia National Laboratories, Albuquerque, NM, and Livermore, CA
- Sponsoring Organization:
- USDOE Office of Defense Programs (DP)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 703
- Report Number(s):
- SAND98-2101; ON: DE00000703
- Country of Publication:
- United States
- Language:
- English
Similar Records
Intense ion beams for surface treatment applications
Formation and modification of surface alloys by excimer laser melting and resolidification