Fe-Cu合金基体损伤的分子动力学模拟研究.pdf

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1、477Vol.47No.720117954—957ACTAMETALLURGICASINICAJul.2011pp.954–957Fe–Cu∗(,Æ102413)Fe–0.05CuFe–0.3Cu
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2、.!"#Fe–Cu,,,$%&')TL341,TG142.4*+,-A*/0)0412−1961(2011)07−0954−04MOLECULARDYNAMICSSIMULATIONOFMATRIXRADIATIONDAMAGEINFe–CuALLOYHEXinfu,YANGPeng,YANGWenChinaInstituteofAtomicEnergy,Beijing102413Correspondent:HEXinfu,Tel:(010)69357161,E-mail

3、:hexinfu@ciae.ac.cnSupportedbyNationalBasicResearchProgramofChina(Nos.2011CB610503and2007CD209801)andNationalNaturalScienceFoundationofChina(No.10975194)Manuscriptreceived2011–04–06,inrevisedform2011–04–20ABSTRACTThereactorpressurevessel(RPV)isthehighes

4、tprioritykeycomponentinnuclearpowerplantsandisconsideredirreplaceable.TheembrittlementofRPVsteelsisingeneralthoughttobecausedprimarilybytheformationofCu–enrichedclusters,theformationofmatrixdamagefeatures,andthesegregationofPatomsatgrainboundaries.Thedi

5、splacementcascadesinFe–0.05CuandFe–0.3Cualloyswerestudiedbymoleculardynamicsinthecurrentwork.ItwasfoundthatsubstitutionalCudoesnotsignificantlyaffecttheamount,annihilationandrecombinationofdefectproducedbydisplacementcascadebutaffectsthevacancymigrationene

6、rgysignificantly.Theself–interstitialatoms(SIAs)clustersandvacanciesclustersareformedduringthedisplacementcascadesandaffectedbyirradiationtemperature.KEYWORDSFe–Cualloy,radiationdamage,moleculardynamics,defectscluster12
,-.+').(RPV)

7、22345,RPVRPV/64#:;<223446!"#/$#,,*2178293=),,A43=),43*3RPV4#!"!"%&##5.516,:>#,BC6/6?=
9;[1,2]'$,%%RPV4#7&(8!&'4#.5/62346<—)@=D)"Cu'#((2—3nm,$Cu*+Ni,Mn,Si217:>7(AB>?)3=D:;(AB&'),()#);,*4(

8、4+&),Æ'6-#);#8,<9=@>A:C=;)@=D6),1(*$#/46)P-.+'((,9B/C)#7.5?3<=DB(CD'EEFAE@ABA:,2>3?
6BG@.FGHIHAB6Fe–CuJKC'RPV6<,[3−7]*CCLF829M1,DHIE%ED,:>01:)2*+;34.-2011CB6105032007CD-[8].209801H/JKF&OHEHIFPL