Formation of nanosized martensite particles in stainless steels

Masayuki Shimojo, T. Inamura, T. H. Myeong, K. Takashima, Y. Higo

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Martensitic transformations occur in steels and other metals when the material is quenched or cooled. During the transformation, a metastable phase transforms in an autocatalytic way into a thermodynamically stable phase. Thus, it has been considered to be impossible to control the size of martensite in the order of nanometers. Here, we report the formation and dispersion of nanosized martensite in stainless steels by controlling the dislocation density and temperature. Electron microscopy revealed that martensite particles of approximately 5 nm in diameter were dispersed. Since both work hardening and precipitation hardening are effective in this material, this would be an additional, newly discovered strengthening mechanism for steels.

Original languageEnglish
Pages (from-to)261-265
Number of pages5
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume32
Issue number2
Publication statusPublished - 2001 Feb
Externally publishedYes

Fingerprint

Stainless Steel
martensite
Martensite
stainless steels
Stainless steel
Steel
steels
precipitation hardening
Age hardening
work hardening
Metastable phases
Martensitic transformations
martensitic transformation
Strain hardening
hardening
Electron microscopy
electron microscopy
Metals
metals
Temperature

ASJC Scopus subject areas

  • Materials Science(all)
  • Metals and Alloys

Cite this

Formation of nanosized martensite particles in stainless steels. / Shimojo, Masayuki; Inamura, T.; Myeong, T. H.; Takashima, K.; Higo, Y.

In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 32, No. 2, 02.2001, p. 261-265.

Research output: Contribution to journalArticle

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