Development and properties of high strengthened carbon steels produced by repetitive side extrusion and heat treatment process

Koshiro Aoki, Akira Azushima

研究成果: Conference contribution

6 被引用数 (Scopus)

抄録

In recent years, ultrafine grained steels have developed by the new thermo-mechanical control processing (TMCP) and the severe plastic deformation (SPD) processes. The minimum ferrite grain size obtained by the new TMCP is less than 1μm. On the other hand, in the SPD processes such as the equal channel angular Extrusion (ECAE), the high pressure torsion process (HPT) and the accumulative roll bonding (ARB), steels with a sub-micron scaled grain size are developed. In order to obtain high-strengthened steel with ductility, carbon steels with various carbon contents were deformed by repetitive side extrusion process and heat treatment, and the properties of materials such as Vickers hardness, tensile strength and microstructure observation were investigated. Vickers hardness and tensile strength increased with increasing number of process. The microstructures of all steels were refined by deformed structure. After heat treatment, the tensile strength became lower and total elongation increased with decreasing hardness. Fatigue property was better than that of the as-received material after side extrusion and heat treatment.

本文言語English
ホスト出版物のタイトルSupplement to THERMEC 2006, 5th International Conference on PROCESSING and MANUFACTURING OF ADVANCED MATERIALS, THERMEC 2006
ページ2884-2891
ページ数8
PART 3
出版ステータスPublished - 2007 12 1
イベント5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006 - Vancouver, Canada
継続期間: 2006 7 42006 7 8

出版物シリーズ

名前Materials Science Forum
番号PART 3
539-543
ISSN(印刷版)0255-5476

Conference

Conference5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006
国/地域Canada
CityVancouver
Period06/7/406/7/8

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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