Refining process of 430 stainless steel in AOD （argon oxygen decarburization） was simulated under the experimental condition. Al was chosen as deoxidizer, Mg-Al alloy was added in process of refining, and slag used ...Refining process of 430 stainless steel in AOD （argon oxygen decarburization） was simulated under the experimental condition. Al was chosen as deoxidizer, Mg-Al alloy was added in process of refining, and slag used in oxidation period of AOD was chosen in the experiments. The variation of total oxygen content, the size, morphology and composition of inclusions in refining process and the mechanical properties, pitting corrosion resistance of final samples were studied. The results show that no obvious differences in total oxygen content were observed among all the experiments. Neither chain nor cluster Al_2O_3 inclusions were found in refining process of experiments treated by Mg-Al alloys, the average size of inclusions in the steel treated by Mg-Al alloys was less than that of inclusions in steel not treated by Mg-Al alloy. 430 stainless steel treated by Mg-Al alloy shows better tensile strength, yield strength, and pitting resistance than that in the contrast experiment.展开更多
Gold tailings glass-ceramics of CaO-MgO-Al2O3-SiO2 system have been studied by usinggold tailings as a major raw materials, its main crystalline phase is diopside. The effect of gold tailings amounts added into the ba...Gold tailings glass-ceramics of CaO-MgO-Al2O3-SiO2 system have been studied by usinggold tailings as a major raw materials, its main crystalline phase is diopside. The effect of gold tailings amounts added into the base glass on the crystallization behavior have beeninvestigated by means of DTA, SEM, EDAX and XRD. The experimental results showthat the crystallization peak temperature decreases and volumecrystallization can be enhancedwith increasing the amounts of gold tailings from 40 to 70 wt%. It is the sulfide included ingold tailings that promote .the base glass to nueleate internally. This diopside glassceramicscan be employed as building decorative materials.展开更多
基金Sponsored by National Natural Science Foundation of China(50704010)Fundamental Research Funds for Central Universities of China(090402019)
文摘Refining process of 430 stainless steel in AOD （argon oxygen decarburization） was simulated under the experimental condition. Al was chosen as deoxidizer, Mg-Al alloy was added in process of refining, and slag used in oxidation period of AOD was chosen in the experiments. The variation of total oxygen content, the size, morphology and composition of inclusions in refining process and the mechanical properties, pitting corrosion resistance of final samples were studied. The results show that no obvious differences in total oxygen content were observed among all the experiments. Neither chain nor cluster Al_2O_3 inclusions were found in refining process of experiments treated by Mg-Al alloys, the average size of inclusions in the steel treated by Mg-Al alloys was less than that of inclusions in steel not treated by Mg-Al alloy. 430 stainless steel treated by Mg-Al alloy shows better tensile strength, yield strength, and pitting resistance than that in the contrast experiment.
文摘Gold tailings glass-ceramics of CaO-MgO-Al2O3-SiO2 system have been studied by usinggold tailings as a major raw materials, its main crystalline phase is diopside. The effect of gold tailings amounts added into the base glass on the crystallization behavior have beeninvestigated by means of DTA, SEM, EDAX and XRD. The experimental results showthat the crystallization peak temperature decreases and volumecrystallization can be enhancedwith increasing the amounts of gold tailings from 40 to 70 wt%. It is the sulfide included ingold tailings that promote .the base glass to nueleate internally. This diopside glassceramicscan be employed as building decorative materials.
