Formation of nanosized martensite particles in stainless steels

被引：18

作者：

Shimojo, M ^{[1
]}

Inamura, T ^{[1
]}

Myeong, TH ^{[1
]}

Takashima, K ^{[1
]}

Higo, Y ^{[1
]}

机构：

[1] Tokyo Inst Technol, Precis & Intelligence Lab, Yokohama, Kanagawa 2268503, Japan

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2001年 / 32卷 / 02期

关键词：

Age hardening - Catalysis - Cooling - Dislocations (crystals) - Dispersions - Electron microscopy - Martensite - Martensitic transformations - Nanostructured materials - Particle size analysis - Quenching - Strain hardening - Strengthening (metal) - Thermodynamic stability;

D O I：

10.1007/s11661-001-0257-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：261 / 265

页数：5

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