SENSITIVITY OF MICROSTRUCTURE TO THERMAL HISTORY OF MELTS IN RAPIDLY SOLIDIFIED Al-Fe-M-Si ALLOYS
快凝Al—Fe—M—Si合金的显微结构对熔体热历史的敏感性

The sensitivity of microstructures to the thermal history of the melts in rapidly solidified Al-Fe-M-Si (M=Ti, Nb, Cr+Mo, W) alloys with different compositions were studied. It is shown that the microstructures in rapidly solidified Al-Fe-M-Si alloys are obviously different under the same system of the thermal history of the melts. Effect of the thermal history on the microstructures in rapidly solidified Al-Fe-M-Si(=Ti, Nb,Cr+Mo) alloy is not more sensitive than Al-Fe-W-Si alloys in the thermal history range from 1323 K to 1523 K for 5 min. Correspondent: GUAN Shaokang,(Department of Materials Science and Engineering, Zhengzhou University of Technology, Zhengzhou 450002)