Accession Number:

AD0266233

Title:

MATERIALS AND SERVICES NECESSARY FOR AN INVESTIGATION OF THE EFFECT OF MECHANICAL PROPERTIES ON THE METHOD OF ADDITION OF IRON TO ELECTROLYTICALLY PRODUCED TITANIUM

Descriptive Note:

Corporate Author:

CHICAGO DEVELOPMENT CORP RIVERDALE MD

Personal Author(s):

Report Date:

1961-02-28

Pagination or Media Count:

3.0

Abstract:

Metallographic study of samples of buttons mad from Fe containing Ti crystals, revealed that in all samples showing high reman nt magnetism and high apparent tensile modulus, a typical structure appeared on metallographic examination of polished and etched specimens. This structure might be classed as similar to a Widmanstattian structure and presumably arises from the precipitation of the alpha Ti along a particular habit plane of the beta Ti from w ich it is formed. The precise mechanism of soli ification and transformation which is thu favored by alpha Ti-iron clusters which persist through the button melting is not clear. The samples which show the Widmanstattian type structure do not show it uniformly but rather in patches. A 300-lb ingot of electroytic Ti containing Fe was made. In order to study the cold worked properties of the ingot, turnings were made from the circumference of the ingot and cold rolled. A comparison of the load-extension curves of the cold rolled turnings and th forged and annealed bar showed that the turnings had a muc higher apparent modulu . Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE