【摘 要】
：
利用膨胀仪、Gleeble热模拟试验机,对铜包钢丝用超低碳钢动态连续冷却转变规律进行了研究,绘制了铜包钢丝用超低碳钢动态连续冷却转变曲线,结合光学显微镜、显微硬度计分析冷
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利用膨胀仪、Gleeble热模拟试验机,对铜包钢丝用超低碳钢动态连续冷却转变规律进行了研究,绘制了铜包钢丝用超低碳钢动态连续冷却转变曲线,结合光学显微镜、显微硬度计分析冷却速率对其组织演变规律的影响。结果表明,铜包钢丝用超低碳钢奥氏体连续冷却的相变产物均为铁素体组织,随着冷速的提高,铁素体晶粒尺寸不断降低;在0.5~3.5℃/s冷速范围内,铁素体以大晶粒为主,周围伴随少量小晶粒,硬度较低。结合其性能及使用要求,轧制过程温度需控制在920℃以上,轧后冷却速率宜控制在3.5℃/s以下。该结果为制定铜包钢丝用超
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