环件辗扩成形过程微观组织及性能控制研究进展

发布时间：2018-11-13 06:47

【摘要】：高性能大型环件精确辗扩控形控性一体化制造是大型运载火箭仓体、风电法兰、核电反应堆及石油化工容器等高端装备向着安全、轻量、高效和长寿命方面发展的迫切需求。综述环件辗扩成形过程微观组织及性能研究现状,分析单、双道次简单热模拟压缩试验和显微组织演变数值模拟技术在环件辗扩过程组织演变研究中的应用,探讨环件组织与性能控制中存在的问题,并指出目前的研究已无法满足上述高性能环件制造要求。提出复杂多道次物理模拟及内变量组织建模用于环件辗扩组织演化分析的必要性,探明环件宏观/微观织构定量表征和晶体塑性有限元法(Crystal plasticity finite element method,CPFEM)揭示组织演变机理的可行性。阐述今后高性能环件辗扩成形组织演变及性能控制的研究方向与重点,未来必须构建辗扩过程环件组织、织构和力学性能之间及其与工艺参数的定量关系。
[Abstract]:High performance large ring precision rolling control integrated manufacturing is an urgent demand for the development of safety, light weight, high efficiency and long life for large launch vehicle, wind power flange, nuclear power reactor, petrochemical container and other high-end equipment. The research status of microstructure and properties in ring rolling forming process is reviewed. The application of single and double pass simple thermal simulation compression test and numerical simulation of microstructure evolution in ring rolling process is analyzed. This paper discusses the problems existing in the control of the structure and properties of the ring parts and points out that the current research can no longer meet the manufacturing requirements of the high performance ring parts mentioned above. The necessity of complex multi-pass physical simulation and internal variable structure modeling for the analysis of ring rolling microstructure evolution is put forward. The quantitative characterization of macroscopical / microscopic texture of ring member and the crystal plastic finite element method (Crystal plasticity finite element method,) are proved. CPFEM) reveals the feasibility of the mechanism of tissue evolution. In this paper, the direction and emphasis of research on microstructure evolution and property control of high performance ring rolling forming are described. The quantitative relationship among ring structure, texture, mechanical properties and process parameters must be constructed in the future.
【作者单位】：太原科技大学金属材料成形理论与技术山西省重点实验室;
【基金】：国家自然科学基金重点(51135007);国家自然科学基金(51174140,51575371) 高等学校博士点基金优先发展计划(20111415130001) 山西省自然科学基金(2014011026-2)资助项目
【分类号】：TG306

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