Microstructure and Mechanism of Three Spheroidizing Treatment for the Carbide of GCr15 Steel

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Three groups of GCr15 steel were heat-treated respectively by conventional spheroidizing annealing, circulation spheroidizing annealing, 1050°C for 30min oil cooling quenching + 700°C tempering. The final heat treatment of these GCr15 steel was 840°C oil cooling quenching + 150°C tempering. The microstructure of the heat-treated GCr15 were observed and the mechanism of three spheroidizing treatment were discussed in this paper. The results showed that: There is obvious difference among the three groups carbide of GCr15 for the mechanism of three spheroidizing treatments is different. The GCr15 has 1050°C for 30min oil cooling quenching + 700°C tempering showed the best result of carbide spheroidizing. The microstructure of GCr15 after 840°C oil cooling quenching + 150 °C tempering was tempered martensite and carbide which is fine, round and widely distributed.

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Periodical:

Advanced Materials Research (Volumes 476-478)

Edited by:

Wenzhe Chen, Qiang Li, Yonglu Chen, Pinqiang Dai and Zhengyi Jiang

Pages:

351-356

Citation:

C. C. Zhang et al., "Microstructure and Mechanism of Three Spheroidizing Treatment for the Carbide of GCr15 Steel", Advanced Materials Research, Vols. 476-478, pp. 351-356, 2012

Online since:

February 2012

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$38.00

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DOI: https://doi.org/10.1016/s0043-1648(02)00222-3