Effect of multiple dispersion of hard VC and soft cu particles on mechanical properties in ferritic steel

Masahiro Murakami, Nobuo Nakada, Toshihiro Tsuchiyma, Setsuo Takaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The tensile deformation behavior of the ferritic steel containing both hard VC and soft Cu particles was compared with the results of VC or Cu single dispersion ferritic steels. The work hardening rate during tensile deformation is much larger in VC single dispersion steel than in Cu single dispersion steel. Since the interaction with dislocation is different between hard VC particle and soft Cu particle, the density of geometrically dislocations tends to be more increased in VC dispersion steel than in Cu dispersion steel, leading to the larger work hardening rate of VC steel. On the other hand, the multiple dispersion of VC and Cu particles leads to the significant increase in the yield strength as well as tensile strength without reducing ductility compared with the VC or Cu single dispersion steels. This is because a large work hardening rate is kept in spite of the high strength in the VC-Cu multiple dispersion steel.

Original languageEnglish
Title of host publication65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010
Pages4271-4277
Number of pages7
Volume5
Publication statusPublished - 2010
Event65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010 - Rio de Janeiro, Brazil
Duration: Jul 26 2010Jul 30 2010

Other

Other65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010
CountryBrazil
CityRio de Janeiro
Period7/26/107/30/10

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials

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