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Fe-P二元系合金具有较好的综合机械性能。但是,当磷含量提高时,合金的烧结收缩也随之增加,尤其当磷含量高于0.6%时,烧结收缩值较大,这对于要求高强度、高精度的铁基零件来说,将受到某些限制。在Fe-P二元系合金中加入碳元素,即建立Fe-P-C三元系合金,不仅可以进一步提高合金的强度,而且还能显著减小烧结收缩,和更好地控制铁基零件的精度。本文着重讨论了在Fe-P-C三元系合金中,磷含量碳含量对其性能和烧结收缩的影响,并从理论上进行了分析。
Fe-P binary system alloy has good overall mechanical properties. However, as the phosphorus content increases, the sintering shrinkage of the alloy also increases, especially when the phosphorus content is higher than 0.6%, the sintering shrinkage value is large, which will be affected by the iron-based parts requiring high strength and high precision Some restrictions. The addition of carbon in Fe-P binary alloys, ie, the creation of Fe-PC ternary alloys, not only further enhances the strength of the alloy, but also significantly reduces sintering shrinkage and better controls the accuracy of iron-based parts . This article focuses on the impact of carbon content of phosphorus content on the properties and sintering shrinkage in Fe-P-C ternary alloys, and theoretically analyzed.