(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 nl/26 0122417 ee ee — ee 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 _ 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 Tithe Ti-6AI-4V ELI and Ti-SAI-2.5Sn ELI alloys were cast—in 4-in diameter Dy 20l-ongi ingnots in Tee ee ee ee en 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 t s Y i A t t t i i e if i i i 7 | i : i ORIGINAL PAGE 1Ke(at0xlc, lh i)n gs 2PoaTEtfaotcwtswrFsaerraihhaheeLf.fi-snocg-eemormI gctscae6r pteo aiiasnAeu.o vsnl ) .mrtgee-3a ed4 c Vr ograph — Se I eR -~ —— ee ee : — — _ — .