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Simulation Model of Hot Forming Based on Multi-Factor Dynamic-coupling and Application
Pages: 13-16,20
Year: Issue:  19
Journal: Hot Working Technology

Keyword:  耦合再结晶镦粗临界应变;
Abstract: 解析了微观组织演化模型与有限元传热变形相互耦合的理论方法,利用Deform软件建立了考虑材料变形、传热、生热、动态再结晶、静态再结晶、亚动态再结晶、晶粒生长等多因素的耦合计算模型.以规格φ35mm×70mm的In718棒坯镦粗70%、冷却5s为实际算例,定义了In718流动应力模型、组织演化模型,对热塑性变形、空冷过程中动态、静态、亚动态再结晶的晶粒尺寸、体积分数及发生的时机等进行了有效预测.
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