金属学报  1995, Vol. 31 Issue (3): 130-134

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Bi偏聚对[001]对称倾侧Cu双晶晶界脆性的影响

李广海;张立德

中国科学院固体物理研究所

EFFECT OF Bi SEGREGATION ON GRAIN BOUNDARY EMBRITTLEMENT OF Cu BICRYSTALS WITH [001] SYMMETRICAL TILT BOUNDARIES

LI Guanghai; ZHANG Lide (Institute of Solid Siate Physics; Chinese Academy of Sciences;Hefei 230031 )

李广海;张立德. Bi偏聚对[001]对称倾侧Cu双晶晶界脆性的影响[J]. 金属学报, 1995, 31(3): 130-134.
, . EFFECT OF Bi SEGREGATION ON GRAIN BOUNDARY EMBRITTLEMENT OF Cu BICRYSTALS WITH [001] SYMMETRICAL TILT BOUNDARIES[J]. Acta Metall Sin, 1995, 31(3): 130-134.

摘要 参考文献 相关文章 Metrics 全文: PDF(345 KB)   摘要: 使用定向生长的［００１］对称倾侧Ｃｕ双晶，研究了Ｂｉ偏聚对Ｃｕ双晶断裂行为和晶界脆性的影响．结果表明：Ｃｕ－Ｂｉ双晶的断裂行为和断裂应力强烈地依赖于晶界的取向差，而与晶界的重位点阵密度无关，其晶界脆性取决于未偏聚Ｃｕ双晶晶界的能量．晶界的能量越大，晶界脆性越强．这种依赖关系可由Ｂｉ在不同晶界的选择性偏聚解释． 关键词 ： Ｃｕ双晶,  ［００１］对称倾侧晶界,  Ｂｉ偏聚,  断裂应力,  晶界脆性     Abstract：The effect of Bi segregation at grain boundary on the fracture behaviour and grain boundary embrittlement was studied by using orientationcontrolled Cu bicrystals with [001] symmetrical tilt boundary.The results indicate that the fracture behaviour and fracture stress of Cu-Bi bicrystals depend strongly on the misorientation, and the grain boundary embrittlement is not related to the density of coincidence site lattice of the grain boundary but to the unsegregated grain boundary energy. the higher the grain boundary energy- the stronger the grain boundary embrittlement. The dependence could be explained by considering the boundary-dependent segregation of Bi atoms. Key words： Cu bicrystal    [001] symmetrical tilt boundary    Bi segregation    fracture stress    grain boundary embrittlement 收稿日期: 1995-03-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 李广海 张立德 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1995/V31/I3/130 1FraczkiewiczA,BiscondiM．JPhysique,1985;46:C4-4972RusselJD,WinterAT．ScrMetall．1985;19:5753VitekV,WangGJ．SurfSci,1984;144:1104HondrosED．McleanD．PhilosMag．1974;29:7715LiGH．WuXJ,CaiM．QiuQ,TangQH．ScrMetallMater,1990;24:21296WuXJ,LiGH,CaiM,QiuQ．TangQH．In:WuBed．,C-MRSInterSymposiaProc1990Bejing,ElesevierSciencePublishers,1991;5:7237WhiteCL,CoghlanWA．MetallTrans．1977;8A:14038SuttonAP．BalluffiRW．ActaMetall,1987;35:2177 [1] 李勇; 李守新; 李广义 . 疲劳过程中垂直晶界Cu双晶形变带中位错组态与裂纹形核[J]. 金属学报, 2004, 40(5): 462-466 . [2] 胡运明;王中光. 垂直晶界和倾斜晶界Cu双晶的疲劳开裂行为及其机制[J]. 金属学报, 1998, 34(12): 1255-1260. [3] 胡运明;王中光. Cu双晶的循环形变行为与疲劳裂纹萌生Ⅱ.疲劳裂纹萌生与早期扩展[J]. 金属学报, 1997, 33(8): 824-830. [4] 胡运明;王中光. Cu双晶的循环形变行为与疲劳裂纹萌生Ⅰ.循环形变行为和滑移形貌[J]. 金属学报, 1997, 33(8): 814-823. Viewed Full text Abstract Cited   Shared      Discussed