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首页> 外文会议>63rd World Foundry Congress Sep 12-18, 1998 Budapest, Hungary >INFLUENCE OF MINOR ELEMENTS ON PROPERTIES OF PURE FE-C-SI CAST IRON
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INFLUENCE OF MINOR ELEMENTS ON PROPERTIES OF PURE FE-C-SI CAST IRON

机译：微量元素对纯Fe-C-SI铸铁性能的影响

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Using pure Fe-C-Si alloys, we evaluated the influence of minor elements such as Ti, N, P and S on the microstructure and the tensile properties of cast iron. The pure Fe-C-Si samples were prepared from electrolytic iron, semiconductor grade silicon and electrode graphite. As for the standard, we prepared the commercial grade cast iron (abbreviated to C. G. iron). The experimental results are as follows; 1) The graphite morphology of the pure Fe-C-Si irons is straight, thin and long but changes to curved, branched, thick and short on S addition. The graphite morphology of the C.G. iron is much more curved, thick and short than the S-added Fe-C-Si irons. 2) The as cast matrix structure of the pure samples is fully pearlite, but there is a small amount of ferrite in the matrix of the C.G. iron. 3) The C.G. samples are superior in tensile properties to the pure Fe-C-Si samples not only the annealed material but also the as cast samples. These results show that the minor elements, such as S and Ti, improve the tensile properties by modification of the graphite morphology.
机译：使用纯Fe-C-Si合金，我们评估了诸如Ti，N，P和S等微量元素对铸铁组织和拉伸性能的影响。从电解铁，半导体级硅和电极石墨制备纯Fe-C-Si样品。至于标准，我们准备了商业级铸铁（缩写为C.G.铁）。实验结果如下： 1）纯Fe-C-Si铁的石墨形态是直的，薄的和长的，但是在添加S后变为弯曲的，分支的，厚的和短的。 C.G.的石墨形态铁比添加了S的Fe-C-Si铁要弯曲，厚且短。 2）纯样品的铸态基体结构是完全珠光体，但C.G的基体中有少量铁素体。铁。 3）C.G.样品不仅在退火材料方面而且在铸态样品方面均比纯Fe-C-Si样品具有更好的拉伸性能。这些结果表明，微量元素如S和Ti通过改变石墨的形态来改善拉伸性能。

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