锻压技术

GH4169合金叶片制坯过程中微观组织的数值模拟

英文标题：Numerical simulation of microstructure evolution during GH4169 alloy blade making

作者：齐广霞万晶晶陈晓峰季廷忠

单位：沈阳理工大学材料科学与工程学院沈阳黎明航空发动机(集团)有限责任公司东北大学材料与冶金学院

关键词：挤压高温合金微观组织演变数值模拟

分类号：TG316.3

出版年,卷(期):页码：2009,34(1):161-165

摘要：

为了预测GH4169合金热挤压过程中挤压件微观组织的演变规律,本文将微观组织模型加入到模拟软件DE-FORM-3D中,实现了金属高温塑性变形—传热—微观组织演变的耦合。同时研究了不同压下量及应变速率对挤压件微观组织演变的影响。结果表明,挤压件杆部晶粒明显细化,压下量及变形速度对组织演变影响显著。

In order to predict the evolution of microstructure in GH4169 alloy extrusion workpiece,mathematical models for the microstructure evolution of GH4169 workpiece were implemented into DEFORM-3D simulator,then the coupling between thermo-mechanical and microstructure evolution was realized.Meanwhile,the method was used to predict the influence of various height reduction and deformation velocity.The results show that the height reduction and deformation velocity have a strong influence on the microstructure evolution,and the pole of the workpiece has less grain size.

基金项目：

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