Open
Archive
Toulouse
Archive
Ouverte (OATAO)
OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible.
This is an author-deposited version published in: http://oatao.univ-toulouse.fr/ Eprints ID:3983
To link to this article:
doi:10.4028/www.scientific.net/DDF.289-292.161 URL: http://dx.doi.org/10.4028/www.scientific.net/DDF.289-292.161
To cite this version: Ter-Ovanessian, Benoît and Berrest, Cedric and Deleume, Julien and Cloué, Jean-Marc and Andrieu, Eric ( 2009) Influence of interstitials content on the diffusion of Niobium in alloy 718. Defect and Diffusion Forum, vol. 289-292 . pp. 161-166. ISSN 1012-0386
Any correspondence concerning this service should be sent to the repository administrator: [email protected]
,QIOXHQFHRILQWHUVWLWLDOVFRQWHQWRQWKHGLIIXVLRQRI1LRELXPLQDOOR\
%HQRvW7HU2YDQHVVLDQ
D&HGULF%HUUHVW
E-XOLHQ'HOHXPH
F-HDQ0DUF&ORXp
G(ULF$QGULHX
H$5(9$$5(9$13 UXH-5pFDPLHU/\RQ&HGH[)UDQFH &,5,0$7&156836,137 (16,$&(7 URXWHGH1DUERQQH7RXORXVH&HGH[)UDQFH
DEHQRLWWHURYDQHVVLDQ#HQVLDFHWIUEFHGULFEHUUHVW#HQVLDFHWIUFMXOLHQGHOHXPH#DUHYDFRP GMHDQPDUFFORXH#DUHYDFRPHHULFDQGULHX#HQVLDFHWIU
.H\ZRUGV'HOWDSKDVH.LQHWLFRIJURZWK1LRELXPGLIIXVLRQ1LFNHOEDVHGVXSHUDOOR\V
$EVWUDFW 0DQ\ VWXGLHV KDYH HPSKDVL]HG WKH EHQHILFLDO HIIHFW RI QLRELXP RQ WKH SK\VLFDO PHWDOOXUJ\RI1L&U)HDOOR\$PRQJWKHGLIIHUHQWVWUHQJWKHQLQJDFWLRQVRIQLRELXPVXFKDV VROLG VROXWLRQ KDUGHQLQJ DQG FDUELGH SUHFLSLWDWLRQ WKH SUHFLSLWDWLRQ RI QLRELXP ZLWK QLFNHO LQ D VWUHQJWKHQLQJ SKDVH Ȗ´ 1L1E GXULQJ WKH DJLQJ KHDW WUHDWPHQW KDV WKH ODUJHVW LQIOXHQFH RQ WKH
PHFKDQLFDOSURSHUWLHVRIDOOR\7KHLPSURYHPHQWRIWKHQLRELXPGLVWULEXWLRQDQGGLIIXVLRQLQ WKH1LPDWUL[PD\DOORZDPRUHKRPRJHQL]HGUHSDUWLWLRQRIȖ´SUHFLSLWDWHVDQGVHHPVWKHQWREHDQ HIIHFWLYH ZD\WRXSJUDGHWKHPHFKDQLFDOSURSHUWLHV$VȖ´SUHFLSLWDWHVGHFRPSRVHWRWKHVWDEOHį SKDVHDWYHU\ORQJDJLQJWLPHVWKHVWXG\RIWKHHIIHFWRIFDUERQQLWURJHQDQGR[\JHQFRQFHQWUDWLRQV RQ SUHFLSLWDWLRQ DQG GLVVROXWLRQ RI WKH į SKDVH PD\ JLYH LQIRUPDWLRQ RQ Ȗ´ SUHFLSLWDWLRQ DQG RQ QLRELXPGLVWULEXWLRQ,WLVWKHSXUSRVHRIWKHSUHVHQWZRUNWRH[DPLQHWKHUROHWKDWWKHDOOR\FRQWHQW RILQWHUVWLWLDOVSHFLHVSOD\VZLWKWKHQLRELXPULFKį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
,QWURGXFWLRQ
7KHUHIUDFWRU\HOHPHQWVDUHHVVHQWLDOLQVXSHUDOOR\V7KH\DUHPDLQO\UHVSRQVLEOHIRUWKHKLJKOHYHO RI PHFKDQLFDO SURSHUWLHV RI VXSHUDOOR\V DW ORZ DQG KLJK WHPSHUDWXUHV $PRQJ WKHP 1LRELXP LV DVVXPHG WR EH RQH RI WKH NH\ DOOR\LQJ HOHPHQWV LQ 1L&U)H VXSHUDOOR\ >@ ,Q WKDW FDVH 1LRELXP FRQWULEXWHV QRW RQO\ WR VROLG VROXWLRQ VWUHQJWKHQLQJ DQG VWUHQJWKHQLQJ WKURXJK FDUELGH IRUPDWLRQEXWDOVRDQGHVVHQWLDOO\WRSUHFLSLWDWLRQKDUGHQLQJE\WKHIRUPDWLRQRIȖ´SKDVH1L1E
GXULQJWKHDJLQJKHDWWUHDWPHQW
$FWXDOO\ Ȗ´SKDVH 1L1E LV UHFRJQL]HG DV WKH PRUH LPSRUWDQW KDUGHQLQJ SKDVH LQ DOOR\
>@ $ PRUH KRPRJHQL]HG UHSDUWLWLRQ RI Ȗ´ SUHFLSLWDWHV VHHPV WKHQ WR EH DQ HIIHFWLYH ZD\ WR XSJUDGHWKHPHFKDQLFDOSURSHUWLHVRIWKHPDWHULDO
+RZHYHUIRUYHU\ORQJDJLQJWLPHVWKHPHWDVWDEOHȖ´SKDVHWHQGVWRWUDQVIRUPWRVWDEOHįSKDVH 1L1EUHVXOWLQJLQVRPHORVVRIVWUHQJWK>@7KHWUDQVLWLRQIURPȖ´WRįPD\WDNHSODFHDWJUDLQ
ERXQGDU\E\FHOOXODUUHDFWLRQORZWHPSHUDWXUHRUPD\UHVXOWIURPDQLQWUDJUDQXODUUHDFWLRQKLJK WHPSHUDWXUH >@%RWK WKH 1LRELXP GLVWULEXWLRQ DQG GLIIXVLRQ YROXPH RU JUDLQ ERXQGDULHV GLIIXVLRQ PXVW WKHQ FHUWDLQO\ SOD\ DQ HVVHQWLDO UROH RQ WKDW SKDVH WUDQVIRUPDWLRQ 5HFLSURFDOO\ VWXG\LQJWKHQXFOHDWLRQDQGWKHJURZWKNLQHWLFVRIį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įSKDVH 0DWHULDODQGH[SHULPHQWDOSURFHGXUHV 7KHPDWHULDOXVHGLQWKLVVWXG\ZDVREWDLQHGWKURXJKDGRXEOHPHOWLQJSURFHVVYDFXXPLQGXFWLRQ PHOWLQJSOXVYDFXXPDUFUHPHOWLQJ7KHQRPLQDOFRPSRVLWLRQRIWKHDOOR\LVJLYHQLQ7DEOH 7DEOH&KHPLFDOFRPSRVLWLRQRIDVUHFHLYHGDOOR\>ZHLJKW@
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
7KH FRXSRQV ZHUH WKHQ DJHG XQGHU LQHUW DWPRVSKHUH VHFRQGDU\ YDFXXP UHJXODWHG IORZ RI K\GURJHQDWHGDUJRQDW&IRUWLPHVUDQJLQJIURPWRPLQDQGUDSLGO\TXHQFKHG7KHVH KHDW WUHDWPHQWV ZHUH SHUIRUPHG E\ LQWURGXFLQJ WKH VDPSOHV LQWR D SUHKHDWHG UHVLVWDQFH IXUQDFH WKDQNVWRDQHOHFWURPDJQHWLFFDUULDJH7KHVSHHGRIWKHVDPSOHFDUULDJHZDVLPSRVHGLQRUGHUWR UHDFKLQVWDQWO\WKHWHPSHUDWXUHRIWKHIXUQDFHDQGWRUDSLGO\TXHQFK
$IWHU HDFK KHDW WUHDWPHQW WKH FRXSRQV ZHUH HOHFWURO\WLFDOO\ HWFKHG $ /(2 93 VFDQQLQJ HOHFWURQPLFURVFRS\6(0ZDVXVHGWRREVHUYHWKHGLVWULEXWLRQRIįSKDVH7HQLPDJHVIURPHDFK VDPSOH ZHUH DFTXLUHG DW UDQGRP SODFHV DOO RYHU WKH VSHFLPHQ VXUIDFH 1XPHULFDO LPDJHV ZHUH VXEVHTXHQWO\SURFHVVHGIRULPDJHDQDO\VLVXVLQJWKHVRIWZDUH$SKHOLRQGHYHORSHGE\$'&,6&DHQ
)UDQFH DQG WKH DYHUDJH YROXPH IUDFWLRQ RI į SKDVH ZDV PHDVXUHG WKDQNV WR D VHPL DXWRPDWLF DOJRULWKPEXLOWXSE\%HDXERLVHWDO>@ 5HVXOWV (YROXWLRQVRIį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
,Q FRQWUDVW WR +7 +7 +7 WKH į SKDVH SUHFLSLWDWHV LQ +7 UHYHDO WR EH PRUH JOREXODU SDUWLFOHVDIWHUKRXURIKHDWWUHDWPHQWSUREDEO\GXHWRDERUWHGQHHGOHJURZWK)LJD)LJE
P
P P
D+7WUHDWHGPLQDW& E+7WUHDWHGKDW& )LJ6(0PLFURJUDSKVVKRZLQJWKHPLFURVWUXFWXUHRI+7DIWHUKHDWWUHDWPHQWDW&IRUD PLQEKRXU 3UHFLSLWDWLRQNLQHWLFV
7KH DYHUDJH YROXPH IUDFWLRQV RI įSKDVH PHDVXUHG RQ PLFURJUDSKV IRU HDFK FRXSRQ DUH UHSRUWHGLQILJXUH,WLQFUHDVHVZLWKWLPHIRUDJLYHQDJHLQJWHPSHUDWXUH7KHYROXPHIUDFWLRQRIį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įSKDVHLQWKHGLIIHUHQWKHDWWUHDWHGPDWHULDOVDW& P P
'LVFXVVLRQ
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
7DEOH&DUERQQLWURJHQR[\JHQDQGVXOIXUQRPLQDOFRQWHQWIRUWKHIRXUWHVWHGKHDWWUHDWLQJ FRQGLWLRQVDVGHWHUPLQHGE\*'06>ZHLJKWSSP@
+HDWWUHDWPHQWFRQGLWLRQV &DUERQ 1LWURJHQ 2[\JHQ 6XOIXU
+7 +7 +7 +7 1XFOHDWLRQDQGJURZWKRIįSKDVH *HQHUDOO\WKHWUDQVLWLRQIURPȖ´WRįVWDUWVDWJUDLQERXQGDULHVE\VRFDOOHG³FHOOXODUUHDFWLRQ´6XFK DFHOOXODUUHDFWLRQLVVKRZQWREHFRQWUROOHGE\1LRELXPGLIIXVLRQDWWKHJUDLQVERXQGDU\>@)RU WKH WHVWHG DJLQJ WHPSHUDWXUH WKH FHOOXODU UHDFWLRQ PD\ DOVR EH REVHUYHG EXW LW LV RYHUWDNHQ E\ LQWUDJUDQXODUQXFOHDWLRQZKLFKLVPDLQO\FRQWUROOHGE\YROXPHGLIIXVLRQ>@
6WXG\LQJWKHLQIOXHQFHRIįSKDVHSUHFLSLWDWLRQRQVWUHVVFRUURVLRQFUDFNLQJEHKDYLRURIWZRKHDW WUHDWHG DOOR\V RQH FKDUDFWHUL]HG E\ ORZ LQWHUVWLWLDOV FRQWHQW DQG WKH RWKHU RQH E\ PRUH ³VWDQGDUG´LQWHUVWLWLDOVSHFLHVFRQFHQWUDWLRQV'HOHXPH>@REVHUYHGWKDWWKHYROXPHIUDFWLRQRIį SKDVHDIWHURYHUDJLQJKHDWWUHDWPHQWVLQWKHWHPSHUDWXUHUDQJH>&&@ZDVPRUHLPSRUWDQW ZKHQWKHLQWHUVWLWLDOVFRQWHQWGHFUHDVHV+HQRWLFHGDOVRWKDWIRUORQJWLPHVDJLQJWKHVWHDG\VWDWH YDOXHVRIWKHYROXPHIUDFWLRQRIįSKDVHSUHFLSLWDWLRQLQWKHORZLQWHUVWLWLDOVFRQWHQWDOOR\ZHUHYHU\ KLJK DQG FORVH WR WKH PD[LPXP SRVVLEOH YROXPH IUDFWLRQ RI įSKDVH SUHFLSLWDWLRQ IRU DOOR\ $FWXDOO\ WKH DVVXPHG HTXLOLEULXP YROXPHIUDFWLRQRIįSKDVHSUHFLSLWDWLRQ LQ DOOR\ LV DERXW $V JUDLQ ERXQGDU\ GLIIXVLRQ LV QRW VXIILFLHQW WR UHDFK WKHVH KLJK YDOXHV WKHVH UHVXOWV HYLGHQFHG WKDW WKH įSKDVH JURZWK LV FRQWUROOHG WR D KLJKHU H[WHQW E\ YROXPH GLIIXVLRQ WKDQ E\ ERXQGDU\ GLIIXVLRQ +HQFH WKH 1LRELXP VROXELOLW\ DQG 1LRELXP GLIIXVLYLW\ LQ WKH PDWUL[ DUH VXSSRVHGWREHWKHWZRPDLQSDUDPHWHUVFRQWUROOLQJWKHįSKDVHSUHFLSLWDWLRQ7KHLUPRGLILFDWLRQV E\LQWHUVWLWLDOVFRQWHQWPD\DIIHFWERWKQXFOHDWLRQDQGJURZWKRIGHOWDSKDVH
,QWKHVDPHZRUN'HOHXPH>@KHDWWUHDWHGERWKDOOR\VDWHOHYDWHGWHPSHUDWXUH&& IRUORQJODVWLQJKHDWWUHDWPHQWVKKLQRUGHUWRUHDFKWKHHTXLOLEULXPYROXPHIUDFWLRQRIį SKDVH SUHFLSLWDWLRQ +H IRXQG WKH VDPH HTXLOLEULXP YDOXH IRU ERWK DOOR\V IRU HDFK WHPSHUDWXUH 0RUHRYHUKHHYLGHQFHGWKDWWKHYROXPHIUDFWLRQRIįSKDVHLQFUHDVHGIRUGHFUHDVLQJWHPSHUDWXUHV 2WKHUZLVH IRU WKHVH WHPSHUDWXUHV WKH VROXELOLW\ RI 1LRELXP LQ WKH PDWUL[ LV VRPHKRZ VLPLODU ZKDWHYHU WKH LQWHUVWLWLDOV FRQWHQW LV $OO WKHVH UHVXOWV WHQG WR SURYH WZR WKLQJV ILUVWO\ įSKDVH SUHFLSLWDWLRQ LV VWURQJO\ FRQQHFWHG WR WKH GLIIXVLYLW\ RI 1LRELXP LQ WKH FRUH RI WKH JUDLQ DQG VHFRQGO\ WKH LQWHUVWLWLDOV FRQWHQW GLGQ¶W DIIHFW WKH HTXLOLEULXP YROXPH IUDFWLRQ RI įSKDVH SUHFLSLWDWLRQ
,QIOXHQFHRILQWHUVWLWLDOVFRQWHQWRQ1LRELXPGLIIXVLRQ
7KHUHVXOWVRIWKHSUHVHQWZRUNVKRZWKDWWKHLQWHUVWLWLDOVFRQWHQWKDVWZRHIIHFWVRQWKHįSKDVH SUHFLSLWDWLRQ )LUVWO\ WKH ORZHU WKH FRQFHQWUDWLRQV RI LQWHUVWLWLDOV VSHFLHV DUH WKH IDVWHU WKH LQWUDJUDQXODUSUHFLSLWDWLRQLV,QIDFWDVWKHVWHDG\VWDWHRIįSKDVHSUHFLSLWDWLRQDWJUDLQERXQGDU\
ZDVTXLFNO\UHDFKHGWKH1LRELXPPD\SUHFLSLWDWHZLWKLQWKHJUDLQ6HFRQGO\WKHįSUHFLSLWDWLRQ UDWHGXULQJVKRUWWHUPLVRWKHUPDOKROGLQJLVKLJKHUIRUORZHUFRQFHQWUDWLRQVRILQWHUVWLWLDOVVSHFLHV 7KLV IDFW GHPRQVWUDWHV LQ D TXDOLWDWLYH ZD\ WKH LQWHUVWLWLDOV FRQWHQW GHSHQGHQFH RI WKH 1LRELXP GLIIXVLRQFRHIILFLHQW$YHU\VLPSOHDSSURDFKFDQEHSURSRVHGDVVXPLQJWKDWWKHYROXPHIUDFWLRQRI įSKDVH LV GLUHFWO\ UHSUHVHQWDWLYH RI WKH HIIHFWLYHGLVWDQFH RI 1LRELXP PLJUDWLRQ HJ KDOI RI WKH JUDLQ VL]H %\ D VLPSOH UHODWLRQ EHWZHHQ WLPH DQG HIIHFWLYH GLVWDQFH WKH 1LRELXP FRHIILFLHQW GLIIXVLRQPD\EHH[SUHVVHGDV W ' /= )RUWKHGLIIHUHQW+7VDJLYHQYDOXHRIWKHYROXPHIUDFWLRQRIįSKDVHLVQRWUHDFKHGIRUWKHVDPH WLPHRIKHDWWUHDWPHQW6RLIWKHVHGLIIHUHQWWLPHVDUHDQDO\]HGWKHFRPSDULVRQDQGWKHUDQJLQJRI WKHDSSDUHQWFRHIILFLHQWGLIIXVLRQRIHDFK+7VPD\EHGRQH,WPD\EHH[SUHVVHGDV [ \ +7\ +7[ W W ' ' = )RUH[DPSOHIRUYROXPHIUDFWLRQVRIįSKDVHLQWKHUDQJHRI>@WKH1LRELXPDSSDUHQW GLIIXVLRQFRHIILFLHQWVRI+7DUHWHQWLPHVJUHDWHUWKDQWKH1LRELXPDSSDUHQWGLIIXVLRQFRHIILFLHQWV RI+7 &RQFOXVLRQV
(YHQ LI WKH FDOFXODWLRQ RI 1LRELXP GLIIXVLRQ FRHIILFLHQW LV QRW GRQH LQ WKLV VWXG\ WKH HIIHFW RI FDUERQ R[\JHQ DQG QLWURJHQ FRQFHQWUDWLRQVRQWKHGLIIXVLYLW\RI1LRELXPLQDOOR\LVFOHDUO\ VKRZQ 7KH HDVLHU PRELOLW\ RI 1LRELXP ZKHQ WKH PDWUL[ LV IUHH IURP LQWHUVWLWLDO VSHFLHV LV HYLGHQFHGE\DIDVWHUNLQHWLFDQGPRUHVSUHDGį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pP6FL5HY0pWDOOS >@)3&RQH6XSHUDOOR\VDQG9DULRXV'HULYDWLYHV706S >@06XQGDUDUDPDQ30XNKRSDGK\D\6%DQHUMHH0HW7UDQV$9ROS >@-'HOHXPH-0&ORXp($QGULHXWK,&('01367061$&(
'LIIXVLRQLQ0DWHULDOV',0$7 doi:10.4028/www.scientific.net/DDF.289-292 ,QIOXHQFHRI,QWHUVWLWLDOV&RQWHQWRQWKH'LIIXVLRQRI1LRELXPLQ$OOR\ doi:10.4028/www.scientific.net/DDF.289-292.161 5HIHUHQFHV
[1] S. J. Patel, G.D. Smith: Superalloys 718, 625, 706 and Various Derivatives (2005), p. 135-154
[2] E. Guo, F. Ma: Superalloys 1980 (1980), p. 431-438
[3] C.T. Sims: Niobium proceedings of the International Symposium, TMS (1981), p. 1169-1220
[4] D.F. Paulonis, J.M. Oblak, D.S. Duvall: ASM Transaction Vol. 62 (1969), p. 611-622 [5] D. D. Keiser, H. L. Brown: Aerojet Nuclear (1976)
[6] W.J. Boesh, H.B. Canada: ASM-AIME internationnal symposium Vol. 2 (1968), p. 579-596
[7] C. Slama, M. Abdellaoui: J. Alloy Compd. Vol. 306 (2000), p. 277-284 doi:10.1016/S0925-8388(00)00789-1
[8] S.T. Wlodek, R.D. Field: Superalloys 718, 625, 706 and Various Derivatives (1994), p. 659-670
[9] I. Kirman, D. H. Warrington: Met. Trans. Vol 1 (1970), p. 2667-2675
[10] V. Beaubois, J. Huez, S. Coste, O. Brucelle, J. Lacaze: Mater. Sci. Technol. Vol. 20 (2004), p. 1019-1026.
doi:10.1179/026708304225019830
[11] I. Kirman: J. Iron. Steel. Inst., Vol. 207 (1969), p. 1612-1618
[12] J.P. Houvion, C. Frantz, M. Gantois: Mém. Sci. Rev. Métall. (1975), p. 159-170 [13] F. P. Cone: Superalloys 718, 625, 706 and Various Derivatives, TMS (2001), p. 323-332
[14] M. Sundararaman, P. Mukhopadhyay, S. Banerjee: Met. Trans. A Vol. 19 (1988),p. 453-465.
doi:10.1007/BF02649259