Recrystallization of fatigued copper single crystals under electropulsing
Xiao, SH; Guo, JD; Wu, SD; He, GH; Li, SX
Corresponding AuthorXiao, SH()
AbstractFatigued copper single crystal with [123] loading axis was treated by high current density electropulsing. and formed two kinds of recrystallized grains with polygonal shape and 7.2-8.8 mum in size, and with ellipsoidal shape and 5.3-8.0 mum in size. The annihilation of dislocations caused by high current electropulsing increases the dislocation density gradient over which local inhomogeneous dislocation structures promotes the formation of recrystallized nuclei. Due to the homogeneous distribution of the vein structures, the recrystallized grains around this region do not process a specific directionality. On the other hand, the recrystallized grains formed around persistent slip bands show bigger grain sizes along the direction parallel to Burgers vector presumably due to the dislocations motion being easier along this direction. The higher temperature rise in persistent slip bands caused by electropulsing than in vein structure increases the possibility of dislocations motion, and leads to the existence of sonic distances between recrystallized grains. Because of the very short treating time under high current elect repulsing, the grains have no enough time to grow, and so the recrystallized grains are of finer sizes.
Keywordcopper single crystal fatigue recrystallization electropulsing
Indexed BySCI
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000174398200012
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorXiao, SH
Affiliation1.Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Xiao, SH,Guo, JD,Wu, SD,et al. Recrystallization of fatigued copper single crystals under electropulsing[J]. ACTA METALLURGICA SINICA,2002,38(2):161-165.
APA Xiao, SH,Guo, JD,Wu, SD,He, GH,&Li, SX.(2002).Recrystallization of fatigued copper single crystals under electropulsing.ACTA METALLURGICA SINICA,38(2),161-165.
MLA Xiao, SH,et al."Recrystallization of fatigued copper single crystals under electropulsing".ACTA METALLURGICA SINICA 38.2(2002):161-165.
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