OALib Journal期刊
碘对N18锆合金应力腐蚀开裂的影响
, PP. 27-30
Keywords: N18锆合金 ,碘分压 ,应力腐蚀开裂
Abstract:
研究了再结晶退火N18锆合金在碘气氛中的应力腐蚀开裂（SCC）行为，着重研究了350℃时碘分压对该合金SCC的影响.结果表明，随着碘分压增加，N18合金对碘致应力腐蚀开裂的敏感性增加，开裂的临界应力强度因子KISCC降低，裂纹萌生所需的应力降低，裂纹萌生所需的时间也缩短；SCC裂纹的快速扩展也受碘分压的强烈影响，碘分压越高，裂纹扩展过渡到快速的穿晶准解理方式时对应的应力强度因子越低；碘分压不仅影响腐蚀产物层的形成，也影响裂纹扩展方式.碘分压的影响规律可用碘的扩散机制及Zr-I-O体系的化学平衡来解释.
References
[1] 赵文金,苗志,蒋宏曼,等.Zr-Sn-Nb合金的腐蚀行为研究,中国腐蚀与防护学报[J].2002,22(2):124. [2] 彭倩,李卫军,唐正华,等.Zr-Sn-Nb合金I-SCC腐蚀产物研究[J].核动力工程,2003,24(4):312. [3] 姚允斌,解涛,高英敏.物理化学手册[M ].上海:上海科学技术出版社,1985,614. [4] DanielCubicciotti,StanleyMHoward,RobinLJones.theformationofiodine-Inducedstresscorrosioncrackinginzircaloys[J].JournalofNuclearMaterials,1978,78:2. [5] Tsing-TyanYANG ,Chuen-HorngTsai.Onthesusceptibilitytostresscorrosioncrackingofzircaloyinaniodinecontainingenviroment[J].JournalofNuclearMaterials.1989,166:252. [6] WooSeogRyu,YoungHwanKang,Jai-YoungLee.Effectsofiodineconcentrationoniodine-inducedstresscorrosioncrackingofzircaloy-4tube[J].JournalofNuclearMaterials,1988,152:194. [7] Kee-NamChoo,Su-IlPyun,Jong-KyoChoi.Astudyonthemechanismofiodine-inducedstresscorrosioncrackingofzircaloy-4[J].JournalofNuclearMaterials,1987,149:289. [8] MFregonese,FlorenceLefebvre,ClementLemaignan,etal.Influenceofrecoil-implantedandthermallyreleasediodineonI-SCCofzircaloy-4inPCI -conditions:Chemicalaspects[J].JournalofNuclearMaterials,1999,265:245. [9] 崔旭梅,唐正华,彭倩,等.组织对N18新锆合金的碘致应力腐蚀行为的影响[J].四川大学学报(工程科学版),2002,34(6):75. [10] PSSidky.Iodinestresscorrosioncrackingofzircaloyreactorcladding:Iodinechemistry(AReview)[J].Journalofnuclearmaterials,1998,256:1. [11] P .Hofmann,JSpino.Stresscorrosioncrackingofzircaloy-4claddingatelevatedtemperaturesanditsrelevancetotransientLWRfuelrodbehaviour[J].JournalofNuclearMaterials,1984,125:85. [12] PatrickJacques,FlorenceLefebvre,ClementLemaignan.Deformation-corrosioninteractionsforZralloysduringI -SCCcrackinitiationPartI:Chemicalcontributions[J].JournalofNuclearMaterials,1999,264:239."
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