Table Of ContentStress Relaxation in Powder Metallurgy Superalloy Disks
TP. Gobi, J.Telesiran ,P. |. Kanlae!,P J Boneuse’ RL. Barn’, D. Homhuck
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Ssnbjeot Categories: Hits Temerimrs Materials, Powder Tecnology, Sur'wve Moilfcation and Coatings
Abstr
‘Modo power metus CPM) processed. disk
ajemllss lave improved. mosiemeas propetics and
Corporeture caabikies over previous cea ahd Wrought
Ashby, doe to inpsed nirasrastgal alee an
Taher vofacingyelome conn, iver, these PM
jens have hoch ascompanicd by spread
1) aorhos sad defen at dink suas,
Perlice sensiviin cen he. addoseed by upping
heveiial compressive reese aeies<t dike Rtaccs
The corapresioe melas! desaes ac. produced wil
surfaseeamancomsse prosssns sue sit peeing Sok
Petal del the nears muse, sully
Petr! ater final isk muchining, Sch, compresive
FRHigustreses act to preclude of delay surice erehing
‘loving serve Hae eo Ing, detects, anesine wr Sigh
‘hjeee domme, mod steiuaiental atc An issue af
leteral canon i the patovia fenton beets
Siiecive saree zeal sbvsen as cogioe
emperines nese The obectivo of tis audy Wa at
sore the rolaten of atezes ot ncessing
im sovsen PM superloyake Ths sober 2 tempera,
Hie, and play wor examine,
Materials and Procesiess
ive sesond stage thine disks were obtinad fom ar
‘Any sntemee depo, alee srg“, comarcble
dives ob T200 hetoapor ongnee. TRU diks sane
sibjoted to scensive esd sess menuemerts with
Sup deph profes user at evs” key Ieenons. These
iho Git oie thea sectioned by allow Xny
reteirements a iasceelle ‘coats. Yo provide bore
“Cote fo eportzes, ado pro las fv aching
TEsckmical les spacimins "THs Bore eurice hu the
Tiahese megnitade af compressive nailual css ia
conperinin io seb, air ot, abd ab bolo lechons
Teer, the bore staoe we tot svete for Xa)
stoien anes teak an wesinned, whieh realy
‘ist ahs sss at, Tater, acon jut inboard
fe ening ar slats uo the Rand side ofthe rim was
feteted lr ilps nestursments ig
As chow in ible | the thos rring whole disks aml
rinsed hive seeone were espied at $02, 650, and
ue, Fapnuss af dks n- 593 and TOC were
iasupted tp ellow Novy Mecavenco of ssid)
Sires tt | and 500 He sok exposed a 650°C was
invnapted oy 24, and SAD h. Avonth ileal, resi
shes and ond work wee messural on tho surlans at Ev
foceious, wad wept gross ts Men mone Lorton
(fig. Ray meaturcnerle were pov ormed wing aco
angle scsequarod-ps whic, im eocondance with SAD
Trey, enpnping the diffraction of mangancss Kealphs
‘eciton from the (11) pate The dfPaction Xap 1
Feak whe posieane at Seehof te px Hg see
tlwinined aosordne 10 au ously dsreribes
{1} The result susine ace ten Heed to deterne
Toervuopie rnkdua eesaes [2 Cold work var
‘ltsimaned through manag te Bell pak wil of the
[EV siffation pee Precae ealibeon txts provided
tho Gelacnship bebween “Vi hale poe: with and loc
Sun snes ted specimens,
Fig. 1, Disk locations ok
alts and Disensson
Seats Messen Eapomires of 93 19 TAC prodased
Syifican lotators veil stew and old etki
(be disks. Depa profs as measured nec the ar lls on
‘whole iss ee show a eich lemperaturs and oxposte
tn: Fig 2, Relnation of voxel sexe mad ole 0°
lawl inseaval 9 ironing ie'peatute abate. AP
bie exlene exgusine coagiion of 301°C for 5006,
sciimium compaesinsneidual ses ne gry tle:
ty 714 aa ld work wae reduce by 509s
soe sso nove
iii i
per Bl
ig. 2, esl sts aa sl wk poles beter ant
‘utr exposure af ate ds,
ARewrssons The rluiaions of mesdwl sinss and eold
wok wo mdeec yi mulipls Tneae resrsse0,
valuing lewos of exsasus teepertro (T), comon
Ingeithn of time (LT. ial opens a 1S),
fal cold work (Ol, end the intanoion terns
Tsar steps leet alr we pevorned, ith
4 pobldLity of significance cxocnding MMs novomry ir
Fnchive af a ter. Soa zeiion (SP) ac Ted 1
insregs with grestar east tempers. tne, mal
Seapaesive swe om Hetil okt ss, ab aon i fs
resuling repoiioa econ I. Sigrioane mteeacson
lens inialal sicees relaxation wav aoceameted Tor
fonhinarons oF Eh tagpeame ®th Tons Hine. Stress
‘Rlavition nie was aceanmared for combiniors of bh
Il eomyussive ses snes ith Tigh tempernure,
fnse, of eal seld works The egresion satiny
sats av nade ng 2
SRA L-NAN6ST-AGH ELT 94014816 LASEOIC HE
DALEK SL L-DMDOOTIS 4. 215°LT HS
HOSISSMTRMTC, Wy 08565, nmo77 MPs {L)
Cott sn exaton (ORR) wo abe ural to inesase
vith" greasrexpusnetnperacae,ems,
Conceive sees, and ine cold wath, eatiad 2
Signfcanimorecon tes nsicateg ool wer eat
‘wea tocel at ar eximbinacens of bi ial wl ork
sey igh trmpcanars ane real en ro sees,
CR 5240. 001251'1.0699°C-9.0007°15-
AAURSICW 0.001 THIEN D6UDLTPICW.
AMUOSPISFICW: Ry NOIOR,remEOm 3)
Soceinen Taste Cede! specimens having Et ga3°
Gomer ol im al gage foreth of 21 aia were
Iiachired from an imexpoval dies, They Row teste aL
593,630, and TPC fa sewuyaie st machine wn.
{ressince eli funace ard eel sensomeew. The
fesse seared ith sn inerse a x ost sae of
Assan, im seconde wilh see tasty proseires
Gescebud iV ASTM R21. Tas tee sere chen Sinp3p=d ab
Tos sein and ld at as cine 9 ease Hs
Islvatin rs. In subvoquott tte specimens wes fas)
tonsils tested st roont femperture to intodace plete
[posing pt 13.7%. Thee aseined epecinaras ere
‘ral gv th taile-rneerelacalign tx. AB hon
nig. 2, sir relaction again ineiened wih terpeoratre
fuses ane slo inerovgee wit ost work intedaced be
te pls e geeniraine ia howe specimen tes. Th ere
The prviocs Rings on dks md dish, estions wer
inhsrent mater reponse, hich amalé Be seeeneal sit)
these sip specimen ts,
Summary and Conclusions
Sings sc amation war ovahato® ie ly mchinned ond
fiead Rete’ 98 avhine dik an dik solion=s Usa
spon a tempers of $989 TFC. and umes of |
Tose Say lifaeton es weed io deterine residual
SMe and eld work wer Ihe exposien. Regression
fuvtyees india sess and sole tock elem Both
irsiosed with emer esposne isiopsa, time, ial
fonprecsve sees, ad inal osld work Ml sean
Scala shir te eelaneon of beretcal eameresive
Tesi ecowes cn be neluced ymin inital eo}
wing duchy. saase satznceeo) process. ated then
Toitinzine sine a Hh finsestres.Thsge residual
Seve an he model sod profiled meg disk sevice
(ssorute 0 orler ly bike alanzgs of sir Rom efits to
Flin te
‘Releens
1. B.S, Preven, Sun X-Rev Anal, V. 29, FS. pm
oan
2 PLS. Prevey du tv X-Ray Anal, V, 20, 19RTF. ps
