对CSP生产的低碳微钛高强度钢进行了化学相分析和高分辨率透射电镜的观察.发现钢中纳米级M3C型颗粒的数量要比MC型颗粒多2个数量级,其中＜18 nm的M3C有0.024%,而＜18 nm的MC只有0.000 9%.高分辨率电镜观察的结果表明,纳米级析出物主要有3类,第1类主要含Ti、Fe、C、O、N,第2类含Fe、C、O,第3类只含Fe、O.
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