(NASA-TP-3288) Tensile Properties of Cast Titanium Alloys: Titanium-6A1-4V Eli and Titanium-5A1-2.5Sn Eli

66 Pages·1992·20.2 MB·English

by  National Aeronautics and Space Administration

(NASA-TP-3286) TENSILE PRUPERPTIES N93-10072
OF CAST TITANIU™ ALLOYS:
TITANTUM-6A!1-4Y¥ ELT AND
TITAWTUM-SAl-2.5S5m ELT (NASA) Unclas
16 DP
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Tensile Properties of
Cast Titanium Alloys
Titanium-6Al]-4V ELI and
Titanium-5Al-2.58n ELI

TABOF LCONETEN TS
Cast, hot isostatic pressed (HIP’ ed), annealed ingots enne 2
CSRSTRASEIEED SSG OCE TOG NDGY CES ED OED GD SD CHENG
where tensile samples were removed (x |0, Kallings etch) we 3
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Photomicrographs of as-cast Ti- 5Al-2.5Sn ELI (x 50 and x 400, Kallings etch) ...... 4
Photomacrograph of as-cast Ti-SAl-2.5Sn ELI taken from areas of the casting
where tensile samples were removed ( 10, Kroll’s etch)
Photomof ias-ccast rTi-o6Al-g4V rELia (xp 50 hands x 4 00, Kallings etch) ...........
DrawingNo . MRF-126, EDM cutting template for (1.505 bars
DrawingNo . MRF- 10350, standard 0.505 smooth tensile specimen
LIOFS TTABL ES
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Ti-6AI-4V ELI and Ti-SAI-2.5Sn ELI alloys were cast—in 4-in diameter Dy 20l-ongi ingnots in
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heated to 200 °F above the melting and helfdor 15 min after all visible
The cast ingots were HIP’ed at 1,650 °F, 15 ksi pressure, for 2 h; then annealed at |
Photographs of the ingots are shown in figure |. The microstructures were obtained from samples
These pictures of the
to be ASTM No. |. The
Eight bars (0.505-in diameter by 5.0-in long) were electrical disc
of the EDM is shown in figure6.
The surface
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