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| Influence of Characteristic Inclusion Parameters on Ductility of 40CrNi2Mo Steel |
| LI Xiaoyuan; SHI Jie; DONG Han |
| Institute for Structural Materials; Central Iron & Steel Research Institute; Beijing 100081
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Cite this article:
LI Xiaoyuan SHI Jie DONG Han. Influence of Characteristic Inclusion Parameters on Ductility of 40CrNi2Mo Steel. Chin J Mater Res, 2010, 24(1): 91-96.
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Abstract The influence of characteristic inclusion parameters on ductility of 40CrNi2Mo steels produced by different metallurgy processes were analyzed by quantitative metallography, SEM and EDAX. Results show that decreasing the volume and size of inclusions and increasing the spacing of inclusions, the void nucleated by the inclusions coalescence by internal necking and the development of localized shearing between voids became more difficult in ductile fracture, so percentage reduction of area of VAR steels were better than ESR steel. Characteristic inclusion parameters had little effect on uniform elongation, strain hardening exponent and tensile strength.
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Received: 13 July 2009
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