Accession Number : AD0633220

Title :   LOW TEMPERATURE DEFORMATION OF THE TINI INTERMETALLIC COMPOUND,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Rozner,A. G. ; Buehler,W. J.

Report Date : 01 MAR 1966

Pagination or Media Count : 19

Abstract : The effect of cold working on room temperature mechanical properties of TiNi intermetallic compound was investigated. Samples were cold worked at temperatures well below their martensitic transformation temperature, by means of conventional metal working techniques. The low temperature ductility is ascribed to a martensitic transformation and enables deforming the TiNi compound at low temperatures where the work hardening rate is very high. The martensitic transformation in TiNi is promoted by application of external forces and the TiNi-martensite exhibits high strength and ductility at room temperature. The low temperature deformation increases the room temperature yield strength of stoichiometric TiNi from 18,000 to 61,000 psi and the ultimate tensile strength from 125,000 to 220,000 psi while preserving an elongation of 15 percent. (Author)

Descriptors :   (*TITANIUM ALLOYS, *NICKEL ALLOYS), (*DEFORMATION, TITANIUM ALLOYS), INTERMETALLIC COMPOUNDS, COLD WORKING, STRESSES, STRAIN(MECHANICS), TENSILE PROPERTIES, DUCTILITY, MARTENSITE

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE