Author/Authors :
Koizumi، نويسنده , , Yuichiro and Otsuka، نويسنده , , Takeshi and Minamino، نويسنده , , Yoritoshi and Takayama، نويسنده , , Takemori and Ueyama، نويسنده , , Masanori and Daio، نويسنده , , Takeshi and Hata، نويسنده , , Satoshi، نويسنده ,
Abstract :
Microstructures and hardness of a Fe–1.4%Cr–1%C pearlitic steel processed by super-rapid induction heating-and-quenching (SRIHQ) under various conditions have been investigated. A nano-scaled laminated microstructure composed of two different types of martensite (highly-twinned or containing a high dislocation density) was formed and the maximum hardness was obtained by heating to 1223 K in 0.5 s and quenched. Electron energy loss spectroscopy indicated that the two different types of martensite were formed depending on the local solute-concentration in the non-uniform solute-distribution realized by the SRIHQ-process.
Keywords :
steel , Electron microscopy , Martensitic transformations , HARDENING
