296:
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wristwatch was made, using gamma titanium aluminide for the case, backcase and crown, and a titanium dial and mechanism in Ti 6/4 (grade 5). The retail price of this watch at £37,240 was nine times that of the basic
Seamaster and comparable to the top of the range platinum-cased version with a
322:
TiAl-based alloys have potential to increase the thrust-to-weight ratio in aircraft engines. This is especially the case with the engine's low-pressure turbine blades and the high-pressure compressor blades. These are traditionally made of Ni-based superalloy, which is nearly twice as dense as
435:
in the engineering and aerospace fields are limited by its poor ductility. In addition, the loss of ductility at ambient temperature is usually accompanied by a change of fracture mode from ductile transgranular to brittle intergranular or to brittle cleavage. Despite the fact that a lot of
257:. The density of γ-TiAl is about 4.0 g/cm. It finds use in several applications including aircraft, jet engines, sporting equipment and automobiles. The development of TiAl based alloys began circa 1970. The alloys have been used in these applications only since about 2000.
436:
toughening strategies have been developed to improve their toughness, machining quality is still a difficult problem to tackle. Near-net shape manufacturing technology is considered as one of the best choices for preparing such materials. {date=July 2022}
323:
TiAl-based alloys. Some gamma titanium aluminide alloys retain strength and oxidation resistance to 1000 °C, which is 400 °C higher than the operating temperature limit of conventional titanium alloys.
349:
Machining of the Stage 6, and Stage 7 LPT blades is performed by
Moeller Manufacturing. An alternate pathway for production of the gamma TiAl blades for the GEnx and GE9x engines using
770:
166:
949:
341:
aircraft. This was the first large-scale use of this material on a commercial jet engine when it entered service in 2011. The TiAl LPT blades are cast by
739:
718:
299:
Pole figures displaying crystallographic texture of gamma-TiAl in a rolled sheet of alpha2-gamma alloy, as measured by high energy X-rays.
453:
Voskoboinikov R, Lumpkin G, Middleburgh S (2013). "Preferential formation of Al self-interstitial defects in γ-TiAl under irradiation".
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Gamma TiAl has excellent mechanical properties and oxidation and corrosion resistance at elevated temperatures (over 600
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623:"GE Uses Breakthrough New Electron Gun For 3D Printing – 10X's More Powerful Than Laser Sintering"
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Bewlay BP, Nag S, Suzuki A, Weimer MJ (2016). "TiAl alloys in commercial aircraft engines".
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518:"Processing and Characterization of TiAl-based Alloys : Towards an Industrial Scale"
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and the best oxidation resistance even at 1 000 °C. However, the applications of TiAl
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has the lowest density of 3.4 g/cm, the highest micro hardness of 465–670 kg/mm
287:. Among the three, gamma TiAl has received the most interest and applications.
334:
312:
205:
93:
642:"The new Omega Seamaster Aqua Terra is made of titanium and weighs just 55g"
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253:. It is lightweight and resistant to oxidation and heat, but has low
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Machining Gamma
Titanium Aluminide Components - Moeller Manufacturing
308:
216:
Except where otherwise noted, data are given for materials in their
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Moeller
Manufacturing, Aerospace Division, in Wixom, Michigan, USA
294:
81:
71:
670:
Titanium
Aluminide Applications in the HighSpeed Civil Transport
346:
752:
686:
Edward A. Loria (2001). "Quo vadis gamma titanium aluminide".
380:
260:
Titanium aluminide has three major intermetallic compounds:
329:
uses gamma TiAl for the low-pressure turbine blades on its
307:°C), which makes it a possible replacement for traditional
396:
728:
Kassner, Michael E, Pérez-Prado, María-Teresa (2004).
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482:Liss KD, Bartels A, Schreyer A, Clemens H (2003).
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585:"GE Aviation Rolls Out its 1,000th GEnx Engine"
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681:Power House (GEnx TiAl LPT Blade Announcement)
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153:Key: KHEQKSIHRDRLMG-UHFFFAOYSA-N
7:
675:Titanium Aluminides - Intermetallics
516:Thomas M, Bacos MP (November 2011).
117:
713:. ASM International. p. 131.
14:
195:
621:Heidi Milkert (18 August 2014).
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198:
220:(at 25 °C , 100 kPa).
16:Intermetallic chemical compound
542:Materials at High Temperatures
469:10.1016/j.intermet.2012.07.026
1:
945:Organotitanium(III) compounds
700:10.1016/S0966-9795(01)00064-4
640:Tim Barber (31 August 2019).
563:10.1080/09603409.2016.1183068
360:g lightweight version of the
1573:Organotitanium(IV) compounds
848:Organotitanium(II) compounds
707:Donachie, Matthew J (2000).
502:10.1080/07303300310001634952
710:Titanium: a technical guide
1646:
291:Applications of gamma-TiAl
210:74.849 g/mol
734:. Elsevier. p. 175.
343:Precision Castparts Corp.
333:engine, which powers the
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31:
26:
262:gamma titanium aluminide
315:components in aircraft
393:This section is empty.
351:additive manufacturing
300:
489:Textures Microstruct.
298:
555:2016MaHT...33..549B
353:is being explored.
23:
22:Titanium aluminide
1282:Titanate compounds
780:Titanium compounds
301:
238:(chemical formula
236:Titanium aluminide
224:Infobox references
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591:. 21 October 2015
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963:Titanium(IV)
869:
787:Titanium(II)
730:
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677:on azom.com.
645:
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627:3D Print.com
626:
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593:. Retrieved
589:AviationPros
588:
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367:complication
355:
339:Boeing 747-8
325:
321:
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273:
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261:
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243:
242:), commonly
239:
235:
234:
42:Identifiers
18:
1204:·20TiO
1196:NiO·Sb
463:: 230–232.
347:Avio s.p.a.
183:Properties
1620:Aluminides
1614:Categories
1545:Pb(Zr,Ti)O
440:References
373:Alpha 2-Ti
365:moonphase
335:Boeing 787
313:superalloy
274:alpha 2-Ti
266:gamma TiAl
206:Molar mass
94:ChemSpider
70:3D model (
59:12003-96-2
49:CAS Number
33:IUPAC name
1148:Ti(OCH(CH
595:10 August
571:138071925
404:July 2020
319:engines.
255:ductility
246:, is an
128:10290735
1389:EuBaTiO
551:Bibcode
528:: 1–11.
317:turbine
115:PubChem
103:8466204
1349:CaZrTi
1188:KTiOPO
1164:Ti(OCH
1064:Ti(NMe
1008:Ti(ClO
738:
717:
569:
358:
311:based
305:
270:γ-TiAl
167:SMILES
27:Names
1561:ZnTiO
1553:SrTiO
1537:PbTiO
1529:NiTiO
1433:MnTiO
1397:FeTiO
1325:CaTiO
1289:BaTiO
1076:Ti(NO
1056:TiOSO
991:TiS(S
647:Wired
567:S2CID
142:InChI
72:JSmol
1333:CaCu
1237:Ti(C
1228:TiSi
1220:TiSe
1132:(OCH
1108:Ti(C
1000:TiCl
978:TiBr
883:TiCl
875:TiBr
870:TiAl
836:TiSi
810:TiBr
794:TiCl
736:ISBN
715:ISBN
597:2017
423:TiAl
416:TiAl
345:and
337:and
331:GEnx
282:TiAl
280:and
240:TiAl
1520:TiF
1506:TiF
1492:TiF
1478:TiF
1465:TiO
1463:0.5
1459:0.5
1425:TiO
1365:TiO
1301:TiO
1212:TiS
1100:TiO
1088:TiO
1048:TiI
1040:TiH
1032:TiF
1020:TiF
986:TiC
970:TiB
912:TiP
907:TiN
899:TiI
891:TiF
831:TiS
826:TiO
818:TiI
802:TiH
696:doi
559:doi
497:doi
465:doi
399:.
272:),
118:CID
1616::
1516:Rb
1502:Li
1474:Na
1461:Bi
1457:Na
1445:Ti
1441:Na
1421:Li
1409:Ti
1405:Ho
1377:Ti
1373:Dy
1361:Cs
1343:12
1337:Ti
1319:12
1313:Ti
1309:Bi
1297:Ba
1176:CH
1172:CH
1168:CH
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1522:6
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1508:6
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1476:2
1467:3
1451:7
1449:O
1447:3
1443:2
1435:3
1427:3
1423:2
1415:7
1413:O
1411:2
1407:2
1399:3
1391:4
1383:7
1381:O
1379:2
1375:2
1367:3
1363:2
1355:7
1353:O
1351:2
1341:O
1339:4
1335:3
1327:3
1317:O
1315:3
1311:4
1303:4
1299:2
1291:3
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1260:3
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1200:O
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1102:4
1098:4
1096:H
1090:2
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