(哈爾濱理工大學(xué)材料科學(xué)與工程系， 哈爾濱 150080)
摘 要: 研究了三種純度的鋁及其 Al-2%Fe合金在室溫軋制狀態(tài)下的加工軟化行為及軟化機(jī)理。試驗(yàn)證明：99.996%Al當(dāng)軋制率為80%以上時出現(xiàn)加工軟化現(xiàn)象；99.96%Al和99.6%Al 不發(fā)生加工軟化。用99.996%Al配制的 Al-2%Fe 合金當(dāng)軋制率為60% 以上時出現(xiàn)加工軟化；用99.96%Al 配制的Al-2%Fe合金當(dāng)軋制率為90%以上時出現(xiàn)加工軟化；用99.6％Al 配制的Al-2％Fe合金不發(fā)生加工軟化。室溫回復(fù)是加工軟化的主要原因；Fe有凈化鋁基體的作用；彌散的第二相有利于室溫回復(fù)。
關(guān)鍵字: 加工軟化 回復(fù) 軋制率
（Department of Material Science and Engineering,
Harbin University of Science and Technology, Harbin 150080）
Abstract:The work-softening behaviors and mechanisms of three kinds of pure aluminium and three Al-2%Fe alloys in the rolling state at room temperature were studied, the results show that when the rolling ratio is over 80%, there occurs work-softening in the 99.996%Al but not in the 99.96%Al and 99 .6%Al; that there occur work-softening in the Al(99.996%)-2%Fe alloy when the rolling ratio is over 60% and in the Al(99.96%)-2%Fe alloy when the rolling ratio is over 90%, but not in the Al(99.6%)-2%Fe alloy. The main reason of work-softening is room-temperature recovery which is caused by the dispersive second phases.
Key words: pure aluminiums Al-Fe alloys work-softening rolling ratio recovery
