快凝Al－Fe－M－Si合金的显微结构对熔体热历史的敏感性  

SENSITIVITY OF MICROSTRUCTURE TO THERMAL HISTORY OF MELTS IN RAPIDLY SOLIDIFIED Al-Fe-M-Si ALLOYS

作　　者：关绍康[1] 沈宁福[1] 汤亚力[1] 胡汉起[1] 

机构地区：[1]郑州工业大学,北京科技大学

出　　处：《金属学报》1996年第8期823-828,共6页Acta Metallurgica Sinica

基　　金：国家863高技术及河南省自然科学基金

摘　　要：研究了不同成分的快凝Ａｌ－Ｆｅ－Ｍ－Ｓｉ（Ｍ＝Ｔｉ，Ｎｂ，Ｃｒ＋Ｍｏ，Ｗ）合金显微结构对熔体热历史的敏感性．结果表明：在相同熔体热历史条件下，不同成分的快凝Ａｌ－Ｆｅ－Ｍ－Ｓｉ合金的显微结构有着明显差别；在１３２３Ｋ，５ｍｉｎ至１５２３Ｋ，５ｍｉｎ的熔体热历史制度范围内，只有快凝Ａｌ－Ｆｅ－Ｗ－Ｓｉ合金显微结构对熔体热历史比较敏感．作者认为合金过热熔体的微观不均匀区的大小是影响快凝Ａｌ－Ｆｅ－Ｍ－Ｓｉ合金显微结构对熔体热历史的敏感性的主要因素．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.

关 键 词：快速凝固 敏感性 显微结构 铝合金 

分 类 号：TG146.21[一般工业技术—材料科学与工程]