A Study on the Microstructure and Hardness Feature of 6CrW2MoVSi Steel after Heat Treatment

Yu Mei Dai; Yong Qing Ma; Yan Bin Wu; Ya Nan Ji

doi:10.4028/www.scientific.net/AMR.887-888.223

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 887-888A Study on the Microstructure and Hardness Feature...

A Study on the Microstructure and Hardness Feature of 6CrW2MoVSi Steel after Heat Treatment

Abstract:

6CrW2MoVSi steel has a refined and even microstructure after heat treatment, the average size of annealing carbide is 0.6 μm; quenching martensite is mainly lath-shaped martensite and only a small amount of acicular martensite, and the size of quenching acicular at 950 °C is smaller than 2.5 μm. The curve of quenching hardness increasing with quenching temperature rising is divided into three sections. In the middle section of quenching between 910 °C ~ 980 °C, quenching hardness presents slow rising trend. After higher temperature quenching, there are low and high temperature tempering precipitation hardening zones. At 220 °C ~ 240 °C tempering temperature, precipitation hardness is HRC54 ~ 58. At 540 °C ~ 570 °C tempering temperature, precipitation hardness is HRC52 ~ 56.

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Periodical:

Advanced Materials Research (Volumes 887-888)

Pages:

223-227

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.887-888.223

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Online since:

February 2014

Authors:

Yu Mei Dai*, Yong Qing Ma, Yan Bin Wu, Ya Nan Ji

Keywords:

6CrW2MoVSi Steel, Hardness, Heat Treatment, Microstructure

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