金属热处理 ›› 2021, Vol. 46 ›› Issue (8): 8-14.DOI: 10.13251/j.issn.0254-6051.2021.08.002

• 材料研究 • 上一篇    下一篇

IN690合金的高温本构模型及动态再结晶模型

李冬升, 赵恩旭, 王威, 谭莉, 张俊鹏, 田振宇   

  1. 江苏大学 材料科学与工程学院, 江苏 镇江 212013
  • 收稿日期:2021-03-15 出版日期:2021-08-25 发布日期:2021-12-09
  • 作者简介:李冬升(1975—),男,副研究员,博士,主要研究方向为奥氏体不锈钢、耐热合金等,E-mail:dsli@ujs.edu.cn
  • 基金资助:
    江苏省高端结构材料重点实验室开发基金(hsm1808)

High temperature constitutive model and dynamic recrystallization model of IN690 alloy

Li Dongsheng, Zhao Enxu, Wang Wei, Tan Li, Zhang Junpeng, Tian Zhenyu   

  1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang Jiangsu 212013, China
  • Received:2021-03-15 Online:2021-08-25 Published:2021-12-09

摘要: IN690合金在热加工过程中,存在一些复杂的冶金现象(包括:加工硬化(WH)、动态回复(DRV)和动态再结晶(DRX)等),为了揭示这些现象,通过热压缩试验创建了IN690合金的高温本构方程和DRX模型,分析了IN690合金的DRX机制。此外还利用有限元模拟(Deform-3D)软件对IN690合金的DRX过程进行模拟。结果显示,在一定的应变下,IN690合金的动态再结晶体积分数(XDRX)随变形温度的上升或应变速率的降低而增大。

关键词: IN690合金, 高温本构模型, 动态再结晶模型, 数值模拟

Abstract: During hot working process of the IN690 alloy, some complex metallurgical phenomena (including: work hardening (WH), dynamic recovery (DRV) and dynamic recrystallization (DRX), etc.) are emerged. In order to study these phenomena, the high temperature constitutive equation and DRX mode of the IN690 alloy through hot compression test were created, and the DRX mechanism of the alloy was discussed. In addition, the DRX process of the alloy was simulated by using finite element software (Deform-3D). The experimental results show that the dynamic recrystallization volume fraction (XDRX) of the IN690 alloy increases with the increase of deformation temperature or the decrease of strain rate for a given strain.

Key words: IN690 alloy, high temperature constitutive model, dynamic recrystallization model, numerical simulation

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