ժҪ A heat resistant gradient composite was synthesized in situ on steel with the self��propagating high temperature synthesis (SHS) reaction of 3Ni��Al��Ti��C system during casting. The phases, microstructure, and composition of the composite were analyzed by using an X��ray diffractometer (XRD), and a scanning electron microscope (SEM) coupled with an energy��dispersive X��ray spectroscope (EDS). The formation mechanism of the composite is also discussed. TiC/Ni3Al/steel gradient composite is achieved by forming the gradient distributions of Fe, Ni, and Al, accompanied with the gradient variation of the microstructure from TiC/Ni3Al, to TiC/Ni3Al/steel, and to steel. The composite is in situ synthesized through whole reaction of 3Ni��Al��Ti��C system in liquid steel and densification procedure, and the liquid steel infiltrates into pores in the SHS product and forces liquid Ni3Al to form self��compaction further.
Abstract��A heat resistant gradient composite was synthesized in situ on steel with the self��propagating high temperature synthesis (SHS) reaction of 3Ni��Al��Ti��C system during casting. The phases, microstructure, and composition of the composite were analyzed by using an X��ray diffractometer (XRD), and a scanning electron microscope (SEM) coupled with an energy��dispersive X��ray spectroscope (EDS). The formation mechanism of the composite is also discussed. TiC/Ni3Al/steel gradient composite is achieved by forming the gradient distributions of Fe, Ni, and Al, accompanied with the gradient variation of the microstructure from TiC/Ni3Al, to TiC/Ni3Al/steel, and to steel. The composite is in situ synthesized through whole reaction of 3Ni��Al��Ti��C system in liquid steel and densification procedure, and the liquid steel infiltrates into pores in the SHS product and forces liquid Ni3Al to form self��compaction further.
CUI Xiang��hong;WANG Feng;WANG Shu��qi;YANG Zi��run;GAO Ming��juan;WEI Min��xian. In Situ Synthesis of Heat Resistant Gradient Composite on Steel Surface[J]. �й������ڿ���, 2009, 16(2): 89-0.
CUI Xiang��hong;WANG Feng;WANG Shu��qi;YANG Zi��run;GAO Ming��juan;WEI Min��xian. In Situ Synthesis of Heat Resistant Gradient Composite on Steel Surface. Chinese Journal of Iron and Steel, 2009, 16(2): 89-0.
2009, Vol. 16 
