Study on Precipitated Phase of Ferritic Heat Resistant Stainless Steel Casting Alloy 0.1C-18Cr-1Al-1Si
Author of the article:LI Yang;ZHANG Wei;WANG Qi;ZENG Li
Author's Workplace：State Key Laboratory of Advanced Stainless Steel Materials,Taiyuan Iron and Steel (Group) Co., Ltd., Taiyuan 030003, China;Technology Center of Shanxi Taigang Stainless Steel Co.,Ltd, Taiyuan 030003,China
Key Words：heat resistant ferritic stainless steel precipitated phase phase diagram calculation
Abstract：
By means of phase diagram calculation and transmission electron microscope analysis,the precipitate types,precipitate regularity and morphology of 0.1C-18Cr-1Al-1Si cast alloy of ferrite heat-resistant stainless steel were studied.The results show that the equilibrium phase of 0.1C-18Cr-1Al-1Si alloy is composed of ferrite phase,α-Cr phase,Al N phase,M7C3 phase and M23C6 phase.With the decrease of temperature,the content of C in M23C6 phase first increase and then decrease,the content of Fe gradually decreases,and the content of Cr gradually increase.The crystal structure of M7C3 is orthogonal.Al N is a hexagonal structure with dense row,and the dense row plane is (0001),and the spacing of the planes d is 0.476 nm.
