摘要
This study investigates the phase transformation and microstructure of porous Fe Al parts sintered from elemental powder mixtures using in-situ neutron diffraction and in-situ thermal dilatometry.A single B2 structured Fe Al phase was determined in the sintered Fe Al alloy.The combined effects of the Kirkendall porosity,transient liquid phase,and phase transformations associated with powder sintering all contribute to the swelling phenomenon of the final sintered part.The aqueous corrosion test indicates that the corrosion products include iron oxides in the porous Fe Al parts.The accumulation of corrosion products blocks the pore channel and decreases pore size and permeability over the soaking time.
基金
financial support from the National Natural Science Foundation of China(No.:51971036)
Shandong Provincial Key Research and Development Program(No.:2019JZZY010327)
Fundamental Research Fundsfor the Central Universities(No.:06500092)。
