調和組織構造を有するハイス鋼/炭素鋼複合材料の微細組織と機械的性質

  • 山田 雄介
    同志社大学大学院工学研究科機械工学専攻,
  • 藤原 弘
    同志社大学理工学部機械システム工学科,
  • 宮本 博之
    同志社大学理工学部機械システム工学科,
  • 飴山 惠
    立命館大学理工学部機械工学科

書誌事項

タイトル別名
  • Microstructure and Mechanical Properties of High Speed Steel/Carbon Steel Composite with Harmonic Structure
  • チョウワ ソシキ コウゾウ オ ユウスル ハイスコウ/タンソコウ フクゴウ ザイリョウ ノ ビサイ ソシキ ト キカイテキ セイシツ

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抄録

Harmonic structured materials with fine and coarse grains demonstrate not only enhanced strength but also enough ductility simultaneously. The harmonic structured material consists of a network like a fine grain region and a dispersed coarse grain region. The high strength and enough ductility are attributed to the network fine grain region and the dispersed coarse grain region, respectively. In this study, the harmonic structured metallic composite with high speed steel (HSS) and low carbon steel (LCS) is fabricated by mechanical milling and spark plasma sintering process. The harmonic structured HSS/LCS composite consists of the network like fine grain region with HSS and dispersed coarse grain region with LCS. The hardness of the harmonic structured composite with HSS and LCS is higher than the conventional particle dispersed composite with the same HSS volume fraction.Furthermore, the harmonic structured composite with HSS and LCS indicates high tensile strength without ductility loss, compared to the conventional HSS particle dispersed composite with the same HSS volume fraction. The harmonic structure control of composite materials is effective to improve the mechanical properties with enough ductility maintained.

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