Acta Metall Sin  1995, Vol. 31 Issue (11): 485-493    DOI:

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FORMATION AND DEVELOPMENT OF SHEAR DEFORMATION LOCALIZATION IN LOW CARBON STEELS

XU Yongbo;BAI Yilong;SHEN Letian;XUE Qing;LI Huan;KONG Dan( State Key Laboratory for Fatigue and Fracture of Materials;Institute of Metal Research;Chinese Academy of Sciences; Shenyang 110015)(Laboratory for Non-Linear Mechanics of Continuous Media;Institute of Mechanics;Chinese Academy of Sciences;Beijing 100080)(Manuscript received 1994-10-28;in revised form 1995-04-01)

XU Yongbo;BAI Yilong;SHEN Letian;XUE Qing;LI Huan;KONG Dan( State Key Laboratory for Fatigue and Fracture of Materials;Institute of Metal Research;Chinese Academy of Sciences; Shenyang 110015)(Laboratory for Non-Linear Mechanics of Continuous Media;Institute of Mechanics;Chinese Academy of Sciences;Beijing 100080)(Manuscript received 1994-10-28;in revised form 1995-04-01). FORMATION AND DEVELOPMENT OF SHEAR DEFORMATION LOCALIZATION IN LOW CARBON STEELS. Acta Metall Sin, 1995, 31(11): 485-493.

Abstract References Related Articles Recommended Metrics Download:  PDF(781KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The formation,development and microstructure of shear localization formed during dynamic high speed tornsional testing by split Hopkinson bar with a average strain rate range of 600,650 and 1500 s-1 have been investigated in low-carbon steels.The results showed that the shear localization is sensitive to the strength of the steel.The higher the strength of the steel,the earlier the shear localization occurs.The observations by TEM indicated that the formation and development of the shear localization involved a series of the crystallographic and non-crystallographic events including the dislocation emission from the interfaces between the precipitate and matrix,forming network,cell and tangled structures of the dislocations;the misorientation formation arising from the large accumulated plastic strain in a local area in the band and the growth and coalescence of the microcracks in the band leading to a sharp drop in the load-carrying capacity of the deformed material. Key words:  deformation localization      dislocation      substructure      microcrack      Received:  18 November 1995      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1995/V31/I11/485 1ZenerC,HollomonJH．JApplPhys,1944:15:222RogersHC．AnnuRevMaterSci,1979:9:2383RechtRF．TramASME,Ser．E:JApplMeck,1964;31:1894CulverRS．In:RohdeRW,ButderBM,HollandJR,KarnesCHeds．,MetallurgicalEffectsatHighStrainRates,NewYork:PlenumPress,1973:5195BaiY．In:MeyersMA,MurLEeds．,ShookWavesandHigh-StrainRotePhenomenainMetals．NewYork:PlenumPress,1981:2776StakerMR．ActaMetall,1981;29:6837WuFH,FreundLB．JMechPhysSolids,1984;32:1198DoddB,BaiY．MaterSciTechnol,1985;1:389CliftonRJ,DuffyJ,HartleyKA,ShawkiTG．ScrMetall,1984;18:44310HartleyKA,DuffyJ,HawleyRH．JMeckPhysSolids,1987;35:28211GiovanolaJH．MechMater,1988;7:5912Me-BarY,ShechtmanD．MaterSciEng,1983;58:18113MeyersMA,WittmanCL．MetallTrans,1990;21A:315314ChoK,ChiYC,DuffyJ．MetallTrans,1990;21A:116115WittmanCL,MeyersMA,PakHR．MetallTrans,1990;21A:70716GrebeHA,PakHR,MeyersMA．MetallTrans,1985;16A:76117XuYB,WangZG,BaiYL．MaterSciEng,1989:Al14:8118XuYB,WangX,WangZG,BaiYL．ScrMetallMater,1990;24:57119BaiYL,XueQ,XuYB,ShenLT．MechMater,1994;17:15520CostinLS,DuffyJ．JEngMater,1979;101:25821HartleyKA,DuffyJ,HawleyPH．JMechPhysSolids,1987:35:28322ShawkiT,CliftonRJ,MajdaG．BrownUniversityReportNo．ARODAAG29-81-K-0121//3．198323ShawkiTJ．Ph．Thesis,BrownUniversity,198524SemiatinSL,JonasJJ．AppendixCinFormabilityandWorkabilityofMetals．PlasticInstabilityandFlowLocalization．MetalsPark,Ohio:ASM,198425张振芳,刘民治,苏会和,徐永波．金属学报,1985;21:A384T [1] HAN Weizhong, LU Yan, ZHANG Yuheng. 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