以Zr-1.0Sn-1.0Nb-Fe合金为研究对象,对其挤压管坯、一次冷轧管坯及二次冷轧管坯进行真空退火处理,并采用偏光显微镜对每道次退火后的金相组织进行观察分析,研究了不同挤压温度以及不同退火制度对Zr-Sn-Nb-Fe合金再结晶退火处理的影响.结果表明:同一加工态下,600℃的挤压管坯在640℃/2 h退火发生再结晶程度大于640℃的挤压管坯,再结晶温度随挤压温度的降低而降低；在600℃的退火温度下,延长保温时间对锆合金再结晶程度影响不大；对挤压管坯、一次冷轧管坯的最佳退火温度为600℃/2 h,二次冷轧管坯的最佳退火温度为580℃/2 h或590℃/2 h.
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