Influence of V Content on Microstructure and Mechanical Properties of Gray Cast Iron for Super-Large Cylinder Liner

Li, Yili; Wang, Qi; Chen, Ruirun; Wang, Xin-xiu; Xia, Yuan; Zhou, Guo-ping; Qu, Ying-dong; Li, Guang-long

doi:10.1007/s40962-022-00894-7

Cited by 4 publications

(1 citation statement)

References 26 publications

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“…As the most widely used cast iron material, grey cast iron (GCI) is broadly used in shipbuilding, automobile, machine tools, and other manufacturing industries due to its good casting performance, vibration resistance, wear resistance and cutting performance [1][2][3]. It is very important to improve the performance of GCI with the increasingly high requirements [4,5].…”

Section: Introductionmentioning

confidence: 99%

Effect of V-Mn-Cr inoculant on microstructure and mechanical properties of grey cast iron

Ji,

Du,

Cao

et al. 2023

Ironmaking & Steelmaking

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In this study, the effects of different composition V-Mn-Cr inoculants on the microstructure and mechanical properties of GCI were investigated through Optical microscope (OM), Scanning electron microscope (SEM), Energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD), etc. The results showed that the optimum quantity of inoculant was 7% V, 1% Mn and 6% Cr, and compared with the commercial inoculant samples, the tensile strength, Brinell hardness, and elastic modulus of the V-Mn-Cr inoculant samples increased by 16.7%, 14.2%, and 12.8%, respectively. V-Mn-Cr inoculants were found to refine austenite, graphite, pearlite and eutectic cells size, reduce pearlite lamellar spacing, and increase pearlite and eutectic cells number, thus improving mechanical properties. In addition, graphite nucleation substance may consist of oxides (SiO 2 , FeO, Cr 2 O 3 ), carbides (SiC, TiC), sulfides (MnS, FeS), and XO•SiO 2 silicates (X: Mn, Fe, Ca).

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