Ti-6A1-4V alloy castings prepared in zircon sand molds and the effect of hot isostatic pressing

Paige, J. I. (Jack I.); Clites, P. G. (Philip G.); Henry, Jack L.

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Ti-6A1-4V alloy castings prepared in zircon sand molds and the effect of hot isostatic pressing

1984
By Paige, J. I. (Jack I.) ; Clites, P. G. (Philip G.) ; Henry, Jack L.
Series: Report of investigations (United States. Bureau of Mines) ; 8897

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English

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Personal Author:

Paige, J. I. (Jack I.) ; Clites, P. G. (Philip G.) ; Henry, Jack L.

Paige, J. I. (Jack I.) ; Clites, P. G. (Philip G.) ; Henry, Jack L. Less -
Corporate Authors:

United States. Bureau of Mines.
Description:

"The Bureau of Mines conducted studies to provide data on the room temperature mechanical properties of ti-6al-4v alloy cast in waterglass-bonded zircon sand and to determine the effect of hot isostatic pressing (hip) on these properties. Data on the cast and annealed ti-6al-4v alloy were compared with published data for forged and investment-cast ti-6al-4v alloy. The average charpy v- notch impact strength compared favorably with the typical values of 17 ft.Lbf for wrought material and 19.2 Ft.Lbf for investment-cast material. The room temperature mechanical properties of cast and annealed material compared favorably with published values for investment-cast ti-6al-4v alloy and exceeded the specifications for (1) titanium and titanium alloy castings, grade c-5 according to ASTM b367-69, and (2) titanium alloy bars and forgings as specified in ams4928h, except for the ams4928h minimum requirement for reduction in area (25 pct). The minimum requirements are tensile strength, 130 ksi; yield strength, 120 ksi (0.2 pct); and elongation, 6 pct. None of the specimens tested met the ams4928h minimum requirement for reduction in area. The hip process healed the internal casting porosity in the test specimens, but the fatigue strength was not significantly improved. The fatigue properties of both the cast and cast plus hot isostatically pressed castings were significantly lower than those of wrought products." - NIOSHTIC-2

NIOSHTIC no. 10004015
Subjects:

[+]

Isostatic Pressing. Sand, Foundry. Titanium-aluminum-vanadium Alloys -- Mechanical Properties. Titanium Castings -- Testing. Zircon.
Series:

Report of investigations (United States. Bureau of Mines) ; 8897
Document Type:

Report
Collection(s):

Stephen B. Thacker CDC Library collection
Main Document Checksum:

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urn:sha256:8edb25e9a72f8dfa130f1aef1535e1d5dc53ef8c7d3bccc60e324e2706748d79
Download URL:

https://stacks.cdc.gov/view/cdc/10750/cdc_10750_DS1.pdf
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Ti-6A1-4V alloy castings prepared in zircon sand molds and the effect of hot isostatic pressing

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