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据《Iron making and Steel making》1989,Vol.6,No.2 P123-128报道,钢中的氮既有利,也有弊,不能单纯地将之作为有害元素而将其含量降到很低。在某些产品中,氮作为一个组成元素,可使钢获得某些特殊性能。为了利用氮的有利作用,克服其有害的一面,炼钢工作者的任务是按具体钢种的性能特点,将其含量准确地控制在要求范围内。1 氮的有害影响应变时效与成型性钢的应变时效与氮密切相关,当钢中氮以间隙原子形式存在时,室温条件下便有时效发生。随氮含量增
According to “Iron making and Steel making” 1989, Vol. 6, No. 2 P123-128, nitrogen in steel is both advantageous and disadvantageous, and can not be simply reduced as a harmful element to a very low level. In some products, nitrogen, as a constituent element, gives the steel some special properties. In order to take advantage of the beneficial effects of nitrogen and to overcome its harmful side, the task of a steelmaker is to accurately control its content within the required range according to the performance characteristics of the particular steel. 1 The harmful effects of nitrogen Strain aging and formability The strain aging of steel is closely related to nitrogen. When the nitrogen in the steel exists as interstitial atoms, aging occurs at room temperature. With nitrogen content increased