Influence of Different Heat Treatment Process on the Microstructure and Properties of 12Cr2Mo1R Steel
JIANG Shanyu
Abstract：The influences of different heat treatment process on the microstructure and properties of 12Cr2Mo1R heat-resistant steel plate were discussed. The results showed that with normalizing temperature rise, the bainite content and the strength rise; after normalizing at 975℃, the microstructure is 100%bainite and (Fe,Cr)3C type cementite;with the increase of tempering temperature and the extension of tempering time, the strength decreases and the nanometer strengthening phase separated in tempering at 600℃grows into a needle, and at the same time, the (Fe,Cr)3C cementite spheroidizes continuously and gradually turns to (Fe,Cr)7C3; the tempering treatment at 650℃after normalizing makes negative creep phenomenon disappearing. In production, 12Cr2Mo1R ought to adopt normalizing+tempering treatment, the normalizing temperature is between 920 and 950℃, the holding time is 1.5-3.0 min/mm, the tempering temperature is 720-750℃and the holding time is 2.0-4.0 min/mm.
Keywords：12Cr2Mo1R steelnormalizingtemperingVickers hardnessmicrostructurenegative creep
Publication Date：2013-07-02
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：3( 34-36 )