本文選題：搪瓷鋼　切入點：力學性能　出處：《材料保護》2016年S1期

【摘要】：在低碳鋼基礎上適當增加了C、Mn、S的含量,設計了330 MPa級熱軋?zhí)麓射�。采用電阻爐模擬搪瓷燒制,研究了搪燒燒制溫度及燒制時間對試驗鋼微觀組織和性能的影響。研究發(fā)現(xiàn):試驗鋼組織以鐵素體為主,少量珠光體分布于晶界的三向交叉處。經模擬搪瓷燒制后,組織沒有明顯的變化,隨搪瓷燒制時間的延長,鐵素體晶粒尺寸成增大趨勢,珠光體含量逐漸降低。模擬搪燒保溫時間為較短的2 min時,鋼板強度升高;隨著保溫時間的延長,試驗鋼的強度逐漸下降,塑性提高。860℃保溫超過10 min和890℃保溫超過5 min模擬搪瓷燒制后的試驗鋼屈服強度低于330 MPa,無法達到強度性能指標。試驗鋼的C、Mn、S含量均較高,氫滲透時間明顯高于臨界值,可達到抗鱗爆性能指標。
[Abstract]:On the basis of low carbon steel, the content of CfMnS was increased appropriately, and the 330#en0# grade hot-rolled enamel steel was designed. The effects of firing temperature and sintering time on microstructure and properties of the test steel were studied. It was found that the microstructure of the test steel was mainly ferrite and a small amount of pearlite was distributed at the three-way intersection of grain boundary. There was no obvious change in microstructure. With the prolongation of enamel sintering time, the grain size of ferrite increased, and the content of pearlite decreased gradually. When the simulated enamel holding time was shorter than 2 min, the strength of steel plate increased, and with the prolongation of heat preservation time, The strength of the test steel decreased gradually, and the yield strength of the test steel after heating at 860 鈩，

本文編號：1656608