Through compare and analysis the microstructure of HK40 and HP40,the effect of tissue and element on its properties were studied. All these will be helpful to develop new material of furnace tube.

• 通过对HK40和HP40裂解炉管微观组织的对比分析,研究了材料显微和微观组织变化及成分对其抗氧化性、抗蠕变性、高温强度等性能的影响,对开发和研制新的炉管材料有一定的借鉴作用。