快凝AlFeVSi合金的高温退火行为  

HIGH TEMPERATURE ANNEALING BEHAVIOUR OF RAPIDLY SOLIDIFIED AlFeVSi ALLOY

作　　者：曾欲晓[1] 李松瑞[1] 黎文献[1] 陈伶晖[1] 陈振华[1] 

机构地区：[1]长沙中南工业大学

出　　处：《金属学报》1996年第4期368-372,共5页Acta Metallurgica Sinica

基　　金：国家863高技术项目基金

摘　　要：对比研究了冷变形前后的快凝ＡｌＦｅＶＳｉ合金高温退火时性能与显微组织的变化规律．结果表明，冷变形并未促进合金退火时的性能与组织变化，这可能与该合金表现出的低加工硬化效应，退火时位错大量增殖，弥散相对再结晶的阻碍以及冷变形态合金的退火硬化现象有关．粗化的弥散相与迁移的晶界是高温下位错增殖的主要来源．The variations of properties and microstructure of a cold-rolled rapidly solidified AIFeVSi alloy during high temperature annealing were investigated in comparison with an as-extruded alloy. Unexpectedly, cold-roll did not promote the change of properties and microstructure in the annealed alloy. This might result from the low work-hardening effect, dislocation multiplication during annealing, retardation of the recrystallization by strengthening dispersoids and anneal-hardening phenomenon existing in the cold-rolled alloy.Coarsening dispersoids and migrating grain boundaries were thought of as the main dislocation sources at high-temperature.

关 键 词：快速凝固 退火 铝基合金 耐热合金 

分 类 号：TG166.32[金属学及工艺—热处理]