|Nano structural analysis on stiffening phenomena of PAN-based carbon fibers during tensile deformation|
|G. Zhou; J. H. Byun; S. B. Lee; J. W. Yi; W. Lee; S. K. Lee; B. S. Kim; J. K. Park; S. G. Lee; L. L. He
|Abstract||The effects of inner microstructures, including crystallite size, orientation and defects on the stiffening phenomena of PAN-based T300 carbon fibers under tension were explored. Single-fiber tensile test was conducted on three types of fiber: as received, 1400 and 1600 C heat treated. The distribution of crystallite orientation in a fiber from core to skin was obtained by using transmission electron microscopy. The observations indicate the load-transfer between crystallites depends on the crystallite entanglement. The slide-lock of the entangled junctions among the loosely compacted crystallites is responsible for the increasing elastic modulus during tension. The sharp drop of tensile strength (-36%) of the fiber after heat treated at 1600 degrees C was attributed to the increasing of crystallite size, nanopore defects and a higher misalignment of crystallites in the core region. (C) 2014 Elsevier Ltd. All rights reserved.|
; byun, joon-hyung
; lee, sang-bok
; yi, jin-woo
; lee, wonoh
; lee, sang-kwan
; kim, byung-sun] korea inst mat sci, chang won 642831, south korea. [park, jong-kyu
; lee, seung-geol] agcy def dev, taejon 305600, south korea. [he, lianlong] inst met sci & technol, shenyang 110016, peoples r china.
; byun, jh (reprint author), korea inst mat sci, 797 changwondaero, chang won 642831, south korea.
G. Zhou,J. H. Byun,S. B. Lee,et al. Nano structural analysis on stiffening phenomena of PAN-based carbon fibers during tensile deformation[J]. Carbon,2014,76:232-239.
G. Zhou.,J. H. Byun.,S. B. Lee.,J. W. Yi.,W. Lee.,...&L. L. He.(2014).Nano structural analysis on stiffening phenomena of PAN-based carbon fibers during tensile deformation.Carbon,76,232-239.
G. Zhou,et al."Nano structural analysis on stiffening phenomena of PAN-based carbon fibers during tensile deformation".Carbon 76(2014):232-239.
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