급속 가열에 의한 나노구조의 AlCr2-Al2O3 복합재료 합성과 소결 및기계적 특성

A dense nanostuctured AlCr2-Al2O3 composite was sintered by pulsed current activated heating up to 1200 °C within 2 min from mechanically milled powders. The advantage of this process is that it allows very quick densification to near theoretical density and prohibition of grain growth in nanostruct...

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Published in대한금속·재료학회지, 54(6) pp. 409 - 414
Main Authors 곽봉원, 이석재, 손인진
Format Journal Article
LanguageKorean
Published 대한금속·재료학회 01.06.2016
Subjects
Online AccessGet full text
ISSN1738-8228
2288-8241
DOI10.3365/KJMM.2016.54.6.409

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Abstract A dense nanostuctured AlCr2-Al2O3 composite was sintered by pulsed current activated heating up to 1200 °C within 2 min from mechanically milled powders. The advantage of this process is that it allows very quick densification to near theoretical density and prohibition of grain growth in nanostructured materials. A highly dense AlCr2-Al2O3 composite with a relative density of up to 96% was produced under application of a 80 MPa pressure and a pulsed current of 2000 A. The fracture toughness and hardness of the AlCr2-Al2O3 composite in this study was better than those of previous studies due to the grain refinement. The microstructure and mechanical properties of the composite were investigated using field emission scanning electron microscopy and a Vickers hardness tester. KCI Citation Count: 8
AbstractList A dense nanostuctured AlCr2-Al2O3 composite was sintered by pulsed current activated heating up to 1200 °C within 2 min from mechanically milled powders. The advantage of this process is that it allows very quick densification to near theoretical density and prohibition of grain growth in nanostructured materials. A highly dense AlCr2-Al2O3 composite with a relative density of up to 96% was produced under application of a 80 MPa pressure and a pulsed current of 2000 A. The fracture toughness and hardness of the AlCr2-Al2O3 composite in this study was better than those of previous studies due to the grain refinement. The microstructure and mechanical properties of the composite were investigated using field emission scanning electron microscopy and a Vickers hardness tester. KCI Citation Count: 8
Author 손인진
곽봉원
이석재
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  fullname: 이석재
  organization: (전북대학교)
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  fullname: 손인진
  organization: (전북대학교)
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DocumentTitleAlternate Simultaneous Synthesis and Sintering of a Nanocrystalline AlCr2-Al2O3 Composite by Rapid Heating and Its Mechanical Properties
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Title 급속 가열에 의한 나노구조의 AlCr2-Al2O3 복합재료 합성과 소결 및기계적 특성
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