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Abstract

The effect of Nb on the dissolution and precipitation behaviours of the network carbide in bearing steel, including the precipitation and dissolution temperature and the thickness of network carbide has been investigated in this paper. The precipitation and dissolution processes were carefully compared and analysed in bearing steels with different contents of Nb. The results showed that the presence of Nb has significantly reduced precipitation and dissolution temperatures of network carbide. The precipitation temperatures of Nb free, 0.018%Nb and 0.040%Nb steel are found to be 753°C, 723°C and 719°C, and the dissolution temperatures are 845°C, 785°C and 780°C, respectively. The average thicknesses of network carbide in 0.018%Nb steel and the 0.040%Nb steel are reduced by 21% and 27% compared with Nb-free steel, respectively.

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References

Hellman

Hillert

Effect of second-phase particles on grain growth. Scand J Metall. 1975;4(5):211–219.

Speer

Michael

Hansen

SS.

Carbonitride precipitation in niobium/vanadium microalloyed steels. Metall Mater Trans A. 1987;18(2):211–222. doi: 10.1007/BF02825702

Jansto

SG.

Microniobium alloy approach in medium and high carbon steel bar. Plate and Sheet Products. Metall Mater Trans B. 2014;45(2):438–444. doi: 10.1007/s11663-013-9837-5

Dey

Chandra

Saha

et al. Effect of Nb micro-alloying on microstructure and properties of thermo-mechanically processed high carbon pearlitic steel. Mater Charact. 2018;140:45–54. doi: 10.1016/j.matchar.2018.03.038

Dere

Sharma

Petrov

et al. Effect of niobium and grain boundary density on the fire resistance of Fe–C–Mn steel. Scr Mater. 2013;68(8):651–654. doi: 10.1016/j.scriptamat.2012.12.030

Bhadeshia

Steels for bearings. Prog Mater Sci. 2012;57(2):268–435. doi: 10.1016/j.pmatsci.2011.06.002

Kim

Lee

JS.

On microstructure and properties of Si modified 100Cr6 bearing steels. Mater Sci Technol. 2012;28(1):50–54. doi: 10.1179/1743284711Y.0000000053

Wang

Qian

Xiao

et al. Accelerating cementite precipitation during the non-isothermal process by applying tensile stress in GCr15 bearing steel. Materials. 2018;11(12):1–11.

Deng

Liu

Chao

et al. Effect of Nb microalloying on network carbide in bearing steel. Shanghai Metals. 2015;37(6):5–9.

10.

Liang

Wang

Fang

In Situ observation on movement and agglomeration of inclusion in solid liquid mush zone during melting of stainless steel AISI304. Acta Metall Sinica. 2006;42(7):708–714.

11.

Tian

Wang

Shang

et al. In situ observation of the precipitation, aggregation, and dissolution behaviors of TiN inclusion on the surface of liquid GCr15 bearing steel. Metall Mater Trans B. 2018;49(6):3137–3150. doi: 10.1007/s11663-018-1411-8

12.

Han

Zhao

et al. Effect of proeutectoid carbide on heredity in microstructure-mechanical properties and fatigue life of GCr15 bearing steel. Metall Res Technol. 2017;114(2):208. doi: 10.1051/metal/2017009

13.

Ohtani

Nishizawa

Tanaka

et al. Solubility of NaCl-typecarbides(NbC, VC and TiC) in austenite [C]. Proceedings of the Japan Canada Seminar on Secondary Steelmaking, Tokyo; 1985: 1–12.

14.

Balasubramanian

Kroupa

Kirkaldy

JS.

Experimental investigation of the thermodynamics of Fe-Nb-C austenite and nonstoichiometric niobium and titanium carbides (T=1273 to 1473K). Metall Mater Trans A. 1992;23(3):729–744. doi: 10.1007/BF02675551

15.

Hulka

Guimaraes

JRC.

The role and emerging use of niobium in tool steel [EB/OL]. (2010-09-28)[2011-01-11]. http://www.cbmm.com.Br/portug/sources/techlib/report/toosteel/toosteel.htm .

16.

Cao

Zhang

et al. Effect of carbon content on the solubility of niobium carbide in austenite. Iron and Steel. 2012;47(3):84–88.

Effects of niobium on network carbide in high-carbon chromium bearing steel by in situ observation analysis

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