Effect of fluoride inclusions on induction-slag-melted Ti-6Al-4V alloy. Report of Investigations/1988

Technical Report · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6726893

Paige, J I

The effect of fluoride inclusions on the properties of titanium produced from the induction-slag-melting process is of concern to members of the titanium industry. The objective of the research was to determine the effect of CaF/sub 2/ inclusions on the properties of titanium and its survival rate during melting. The data were obtained from single-induction-slag-melted ingots prepared with the normal addition of 4 pct and also with 2- and 1-pct additions of CaF/sub 2/ slag. The results of this effort showed that the mechanical properties of single-induction-slag-melted Ti-6Al-4V alloy exceed the minimum values specified in Aerospace Materials Specification for Titanium Alloy Bars and Forgings AMS4928H, but these materials are much more notch-sensitive in fatigue than normal Ti-6Al-4V alloy titanium. First and second vacuum-arc remelts of single-induction-slag-melted ingots fragmented and increased the number of inclusions, while reductions in the amount of flux resulted in an upward trend in the spatial distance between pores in an x-y plane.

• Research Organization: Bureau of Mines, Albany, OR (USA). Albany Research Center
• OSTI ID: 6726893
• Report Number(s): PB-88-240577/XAB; BM-RI-9164
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010409* -- Coal
Lignite
& Peat-- Pyrolysis & Carbonization-- (1987-)
ALLOYS
ALUMINIUM ALLOYS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
IMPURITIES
INCLUSIONS
MANAGEMENT
MATERIALS RECOVERY
MECHANICAL PROPERTIES
PROCESSING
RECOVERY
SLAGS
TITANIUM ALLOYS
TITANIUM BASE ALLOYS
VANADIUM ALLOYS
WASTE MANAGEMENT
WASTE PROCESSING