Ce对AH36船板钢凝固组织和硬度的影响
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摘要
采用扫描电镜、能谱研究了添加Ce对AH36船板钢的凝固组织结构、断口及夹杂物形貌的影响,并检测了合金的硬度。结果表明,Ce含量对AH36钢的凝固行为和性能有很大的影响。稀土Ce主要沿晶界分布,细化晶粒,同时改善了夹杂物的形貌,使其在韧窝中的分布更均匀;添加0.02%Ce时,AH36钢的洛氏硬度提高50%。
The effect of adding Ce on the solidification microstructure,fracture and inclusions defect of the ship plate steel AH36 were studied by scanning electron microscope and energy spectrum,and the hardness of the alloy was also detected.The results show that Ce content has a great influence on the solidification behavior and properties of AH36 steel.The rare earth Ce element is mainly distributed along the grain boundary to refine the grain and improve the morphology of the inclusions so as to make the distribution of Ce in the dimples more uniform.Rockwell hardness of AH36 steel will be increased by 50% with adding 0.02%Ce.
The effect of adding Ce on the solidification microstructure,fracture and inclusions defect of the ship plate steel AH36 were studied by scanning electron microscope and energy spectrum,and the hardness of the alloy was also detected.The results show that Ce content has a great influence on the solidification behavior and properties of AH36 steel.The rare earth Ce element is mainly distributed along the grain boundary to refine the grain and improve the morphology of the inclusions so as to make the distribution of Ce in the dimples more uniform.Rockwell hardness of AH36 steel will be increased by 50% with adding 0.02%Ce.
引文
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[2]刘庭光,吴翔宇,汪志刚,等.钇基稀土微合金化E36船板钢热模拟焊接探讨[J].有色金属科学与工程,2017,8(4):42-46.
[3]Sekban D M,Aktarer S M,Xue P,et al.Impact toughness of friction stir processed low carbon steel used in shipbuilding[J].Materials Science&Engineering A,2016,672:40-48.
[4]高立娜,张彩军,顾克井,等.高强度船板钢中针状铁素体的原位观察[J].钢铁钒钛,2017,38(1):143-147.
[5]杨吉春,余海存,高建军.Ce对A36船板钢显微组织和力学性能的影响[J].稀土,2015,36(5):43-48.
[6]Wei Shen,Renjun Yan,Bailu Luo,et al.Ultimate strength analysis of composite typical joints for ship structures[J].Composite Structures,2017,171:32-42.
[7]余海存.稀土Ce对A36船板钢组织和性能的影响[D].包头:内蒙古科技大学,2014.
[8]王福同.船板钢炼钢各工序生产技术研究[J].金属材料与冶金工程,2014,42(1):24-28.
[9]王佳,丁波,赵丹阳,等.E36高强船板钢的激光焊接及微观组织研究[J].热加工工艺,2014,43(1):36-38.
[10]孔冠宏,张瑞堂,冯锐,等.热处理对AH36船板钢微观组织和力学性能的影响[J].热处理,2013,28(6):30-34.
[11]杜大鹏,邬早勤,周立平,等.高强度船板钢连铸坯中心偏析的研究[J].宽厚板,2013,19(5):45-48.
[12]郭冬青,林震,彭峰,等.稀土对D36船板钢再结晶行为的影响[J].内蒙古科技大学学报,2013,32(2):140-143.