张宏凯,李岩,肖豪,等.金属热变形微观组织精密控制的研究进展[J].精密成形工程,2020,12(6):49-59.
ZHANG Hong-kai,LI Yan,XIAO Hao,et al.Research Progress on Precise Microstructure Control of Hot Deformed Metallic Materials[J].Journal of Netshape Forming Engineering,2020,12(6):49-59. |
| 金属热变形微观组织精密控制的研究进展 |
| Research Progress on Precise Microstructure Control of Hot Deformed Metallic Materials |
| 投稿时间：2020-10-18 |
| DOI：10.3969/j.issn.1674-6457.2020.06.007 |
| 中文关键词: 热变形 微观组织 动态再结晶 第二相颗粒 相变 |
| 英文关键词: hot deformation microstructures dynamic recrystallization second-phase particles phase transformation |
| 基金项目:国家自然科学基金(51805415) |
|
| 摘要点击次数: 2595 |
| 全文下载次数: 1220 |
| 中文摘要: |
| 大多数承力关键金属构件在其生产过程中均需经历热变形工步。探讨了典型金属结构材料热变形中3种主要动态再结晶机制的流变行为、微观组织演变特征，并对热变形间隔及热变形后的亚动态再结晶行为进行分析，提出了相应的微观组织控制策略。讨论了第二相颗粒对热变形微观组织演变的影响以及通过第二相颗粒实现微观组织控制的方法。对在热变形中及热变形后冷却过程中会发生相变材料的热变形微观组织演变规律进行了分析。分析热变形过程中的微观组织演变规律，并建立相应的数值模型是实现微观组织精密控制的有效途径，因此简要讨论了不同微观组织演变数值模型的特点及适用性。综合考虑动态再结晶、亚动态再结晶的演变过程以及第二相颗粒和相变的影响规律，并结合基于物理冶金基础理论微观组织演变数值模型是实现热变形微观组织精密控制的必由之路。 |
| 英文摘要: |
| Most of the key load-bearing metal components need to undergo hot deformation in the production process. In this paper, the flow behavior and microstructure evolution characteristics of three main dynamic recrystallization mechanisms in hot deformation of typical metal structural materials were discussed. Meta-dynamic recrystallization behaviors during hot deformation interval and after hot deformation were analyzed, and corresponding microstructure control strategies were proposed. The influence of the second-phase particles on microstructure evolution of hot deformation and some methods of achieving microstructure control through the second-phase particles were discussed. The evolution law of the hot deformation microstructure of the phase change material during the hot deformation and the cooling process after the hot deformation was analyzed. Analyzing the evolution law of the microstructure during thermal deformation and establishing a corresponding numerical model were effective ways to achieve precise control of the microstructure. Therefore, the characteristics and applicability of different numerical models of microstructure evolution were briefly discussed. Comprehensive consideration of the evolution process of dynamic recrystallization, meta-dynamic recrystallization and the influence law of the second-phase particles and phase transformation, combined with the microstructure evolution numerical model based on the basic theory of physical metallurgy, is the only way to achieve precise control of hot deformation microstructure. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
渝公网安备 50010702501719号