采用金相显微镜、扫描电镜、透射电镜、X射线衍射仪、拉伸试验机、硬度计等研究了4343/3003/4343铝合金轧制复合板在100～500℃退火15min～10h后的微观组织和力学性能.结果表明:芯层合金300℃退火1h后开始再结晶,370℃以上退火1h后已完全再结晶且伴随有弥散相析出,弥散相析出后通过钉扎晶界阻碍再结晶晶粒长大;1h退火时,随退火温度升高,芯层合金晶粒先增大后减小,复合板的拉伸强度与硬度先降低后升高;370℃退火时,随退火时间延长,芯层合金再结晶程度增加,晶粒缓慢长大,复合板的拉伸强度与硬度下降;复合板最佳退火工艺为370℃/1h.
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