953 パルス通電加圧焼結における焼結低合金鋼の組織制御

概要

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The pulse current pressure sintering technique is a kind of hot pressing and is hoped to be one of rapid sintering methods. In this sintering process, diffusivity of various elements may different from other sintering techniques because of lower sintering temperature and short sintering time, which may influence on the mechanical properties. In this study, The effect of microstructures on the mechanical properties of low alloy steel has been investigated by using the pulse current pressure sintering technique. The objected steel was Fe-2Ni-0.5Mo-0.4C (mass%) by mixed elemental powders, which showed a fine mezzo-heterogeneous microstructure. However, diffusion of Ni element was not enough for high strengthening because of short sintering time. Therefore, heat treatment after sintering was performed to optimize the microstructure for ultra-high strengthening the steel.
一般社団法人日本機械学会の論文
2002-09-20