Influence of phosphorus on the hot ductility of 2.25Cr1Mo steel
Influence of phosphorus on the hot ductility of 2.25Cr1Mo steel
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DOI：
10.1179/026708303225007933
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发表时间：
2003-11
影响因子：
1.8
通讯作者：
A. Guo;Y. Wang;D. Shen;Z. Yuan;S. Song
中科院分区：
文献类型：
--
作者：
A. Guo;Y. Wang;D. Shen;Z. Yuan;S. Song
用Gleeble热塑性试验机研究了两种不同磷含量（0.01和0.06wt-%）的2.25Cr1Mo钢在700-1200 °C温度范围内的热塑性。俄歇电子能谱表明，高磷钢中磷向奥氏体晶界偏聚。在两种钢的延展性-温度曲线中观察到低谷，最小延展性出现在约750 °C。含磷量较高的钢在整个温度范围内的延展性最差。塑性低谷是由沿奥氏体晶界形成的薄的先共析铁素体层沿着引起的，并且该低谷由奥氏体晶界处的磷的存在而加重。
The effect of phosphorus at two levels (0.01 and 0.06 wt-%) on the hot ductility of 2.25Cr1Mo steel has been investigated over the temperature range 700-1200 °C using a Gleeble machine. Auger electron spectroscopy indicated that phosphorus segregation to austenite grain boundaries had occurred in the higher phosphorus steel. A trough in the ductility - temperature curve was observed for both steels with the minimum ductility occurring at about 750 °C. The higher P containing steel gave the worst ductility throughout the temperature range examined. The ductility trough was caused by the formation of a thin pro-eutectoid ferrite layer along austenite grain boundaries, and this trough was accentuated by the presence of phosphorus at the austenite grain boundaries.