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一、前言长期以来人们采用弥散强化和固溶强化元素作为提高钢材强度的重要手段,取得了一定的成绩。但经多年生产实践看出,弥散强化相(N、C 化物)的尺寸大小如控制不当,钢材的性能就不够稳定;固溶强化元素含量多,则钢材的塑性差,含量少,强度提高又受到限制。所以用元素作为强化手段,往往由于控制不当,强度与塑性不易恰到好处,尤其是既要求高强度又要求高塑性是相
First, the foreword For a long time people use dispersion strengthening and solid solution strengthening elements as an important means to improve the strength of steel, and achieved some results. However, after many years of practice, it can be seen that if the size of the dispersed phase (N, C) is not properly controlled, the performance of the steel is not stable enough. If the content of the solid solution strengthening element is large, the plasticity of the steel is low, restricted. Therefore, the use of elements as an enhancement means, often due to improper control, strength and ductility is not easy just right, especially both require high strength and plasticity is required