...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Mechanical Sciences >Modelling of phase transformations induced by thermo-mechanical loads considering stress-strain effects in hard milling of AISI H13 steel
【24h】

Modelling of phase transformations induced by thermo-mechanical loads considering stress-strain effects in hard milling of AISI H13 steel

机译：考虑AISI H13钢硬轧的应力 - 应变效应的热机械负荷诱导的相变模拟

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Hard milling of difficult-to-machine materials has emerged as a popular manufacturing technology in the hot forging and mould manufacturing industries. Local phase transformation of steels often occurs under deeply coupled thermomechanical effects during the hard milling process. This work focuses on the prediction of phase transformations in hard milling of AISI H13 steel. First, a rapid heat phase transformation model that considers stress-strain effects is proposed and described based on phase transformation kinetics. Second, the proposed model is implemented into a validated finite element model (FEM) as a user subroutine of Abaqus/Explicit to describe phase transformations during chip formation in hard milling of AISI H13 steel. The predicted results indicate that martensite transforms into austenite in the chip back surface while no austenite is produced in the machined surface. The volume fraction of austenite in different zones increases when cutting speed is increased from 200 m/min to 400 m/min. Finally, the proposed metallo-thermomechanical coupled finite element model is verified by comparing the simulated results with experimental data. Good agreement is achieved, demonstrating that the proposed model can be used for prediction of phase transformations during hard milling of AISI H13 steel. The experimental and predicted results help to promote understanding of the phase transformations and microstructure evolution mechanisms of AISI H13 steel in hard milling processes. This study also contributes to optimizing the machining parameters to acquire the desired surface integrity in hard milling of AISI H13 steel.
机译：难以铣削难以磨削的材料在热锻和模具制造业中成为一种流行的制造技术。钢的局部相变经常发生在硬磨过程中的深层耦合热机械效应下。这项工作侧重于AISI H13钢硬轧合中的相变的预测。首先，提出基于相变动力学提出和描述了考虑应力 - 应变效应的快速热相变化模型。其次，所提出的模型被实现为验证的有限元模型（FEM），作为ABAQUS /明确的用户子程序，以描述AISI H13钢的硬磨过程中芯片形成期间的相变。预测结果表明马氏体在芯片背面中的奥氏体转化，同时在加工表面中没有产生奥氏体。当切削速度从200m / min增加到400米/分钟时，不同区域中奥氏体的体积分数增加。最后，通过将模拟结果与实验数据进行比较来验证所提出的金属热机械耦合有限元模型。实现了良好的一致性，证明所提出的模型可用于在AISI H13钢的硬磨过程中预测相变。实验性和预测结果有助于促进对硬磨过程中AISI H13钢的相变和微观结构演化机制的理解。该研究还有助于优化加工参数以在AISI H13钢中获得所需的表面完整性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号