Study on the Influences on Microstructure and Properties of High-Strength Grey Cast Iron in Addition to Alloying Elements Nb

Jun Tao Zhang; Feng Zhang Ren

doi:10.4028/www.scientific.net/AMR.800.221

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 800Study on the Influences on Microstructure and...

Study on the Influences on Microstructure and Properties of High-Strength Grey Cast Iron in Addition to Alloying Elements Nb

Abstract:

The increase of the strength of gray cast iron is mainly depended on alloying. However, with the improvement of strength, its processing performance will always decrease. So three different gray cast irons are studied in this experiment, including adding 0.1% Nb elements, adding 0.2% Nb elements and adding 0.3% Nb elements, to investigate the Nbs effect to the mechanical performance of gray cast iron, we adopt Dynamic Strain Amplifier to measure cutting force to evaluate processing performance, use Optical Microscope and Electron Microscopy observe each samples organization, explains the relationship between Nbs content and the mechanical and processing performance of gray cast iron from micro-level. Finally, we draw the conclusion: when the Nb comes to 0.3 percent, the appearance of E-type graphite and Nb carbide durum granular will greatly decrease its processing performance.

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Periodical:

Advanced Materials Research (Volume 800)

Pages:

221-224

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.800.221

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Online since:

September 2013

Authors:

Jun Tao Zhang, Feng Zhang Ren

Keywords:

Gray Cast Iron, Mechanical Performance, Microstructure, Nb, Processing Performance

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