EFFECTS OF ALLOYING UPON CERTAIN PROPERTIES OF 55.1 NITINOL
Abstract
Ternary alloys of the intermetallic compound TiNi were hot hardness tested. Although hardness can be increased by such alloying, neither the base material nor the alloys offer promise for long time service use above 800F. silicon, aluminum, iron, and cobalt are effective room temperature hardeners. A unique interfacial compatibility between TiNi and tungsten bulk metal was discovered. It is believed that this will enable introduction of a new metal- metal composite system of fibrous tungsten in a Nitinol matrix. A rod of such material is shown to be capable of room temperature swaging, suggesting improved methods of working highly refractory metals. Silver-free TiNi brazing alloys for joining tungsten metals are a natural result of such compatibility.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 28, 1965
- Accession Number
- AD0618681
Entities
People
- D. M. Goldstein
- R. C. Wiley
- W. J. Buehler
Organizations
- Naval Ordnance Laboratory