300M高强钢大型构件全流程锻造变形机理及工艺研究进展  

Advances on the deformation mechanism and forging technology of 300M high-strength steel heavy components in the whole forging process

作　　者：赵明杰 邓磊[1] 孙朝远 黄亮[1] 王新云[1] 郑志镇[1] 李蓬川 刘德建 温东旭 李昌民 曾嵘[1] 陈荣创 郭鹏[1] 周芃 姜静 张晗[1] 章晓婷[1] 李旭阳 李建军[1] Mingjie Zhao;Lei Deng;Chaoyuan Sun;Liang Huang;Xinyun Wang;Zhizhen Zheng;Pengchuan Li;Dejian Liu;Dongxu Wen;Changmin Li;Rong Zeng;Rongchuang Chen;Peng Guo;Peng Zhou;Jing Jiang;Han Zhang;Xiaoting Zhang;Xuyang Li;Jianjun Li(State Key Laboratory of Materials Processing and Die&Mould Technology,School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;China National Erzhong Group Deyang Wanhang Die Forging Co.,Ltd.,Deyang 618000,China)

机构地区：[1]华中科技大学材料科学与工程学院,材料成形与模具技术国家重点实验室,武汉430074 [2]中国第二重型机械集团德阳万航模锻有限责任公司,德阳618000

出　　处：《科学通报》2022年第11期1036-1053,共18页Chinese Science Bulletin

基　　金：国家自然科学基金(51435007)资助。

摘　　要：高强钢大型构件是国防工业和国民经济中高端装备的关键承力构件,其质量直接关系着高端装备的使用性能及服役安全.高强钢大型构件往往结构尺寸大、形状复杂,锻造成形过程中变形道次多,使得在变形过程中材料的软化机制多且复杂、温度分布差异大、流动行为难控,进而使得其形性协调难控制.因此,有必要开展高强钢大型构件锻造中的变形机理及工艺研究.本文综述了本团队联合中国第二重型机械集团德阳万航模锻有限责任公司(下文简称“二重万航”),围绕高强钢大型构件全流程锻造变形机理及工艺所做的研究工作.在机理方面,讨论了高强钢大型构件全流程锻造微观演化机制及宏微观建模与模拟.在工艺方面,讨论了材料热加工性能评估方法、毛坯-预锻件联合优化设计方法及局部控温控流工艺.在应用方面,介绍了二重万航基于上述理论指导及技术支持,实现不同机型起落架外筒及活塞杆成功研制实例,突破了大型构件整体模锻技术所面临的难题.最后对大型构件锻造机理及工艺进行了总结和展望.High-strength steel heavy components are the key load-bearing components of advanced equipment in the defense industry and the national economy, and their quality is directly related to the performance and service safety of advanced equipment.Due to the large size, complex shape of high-strength steel heavy components and multiple deformation passes during the forging process, there are numerous and complex softening mechanisms, the significant difference in temperature distribution, and challenges in the regulation of the flow behavior. These factors make it difficult to regulate the shape and properties of heavy components during the forging process. Therefore, it is necessary to research the deformation mechanism and forging technology of high-strength steel heavy components in the forging process. This paper reviews the advances on the deformation mechanism and forging technology in the whole forging process of high-strength steel heavy components, conducted by the cooperation of our team and China National Erzhong Group Deyang Wanhang Die Forging Co., Ltd.(hereinafter referred to as “Erzhong Wanhang”). In terms of deformation mechanism, the microstructure evolution mechanism and macro/micro modeling and simulation during the whole forging process of high-strength steel heavy components are discussed. In terms of forging technology, the evaluation method for hot workability, the joint optimization design method for blank and pre-forgings, and local regulation of temperature and flow behavior are discussed. In terms of application, based on the above theoretical guidance and technical support, the successful development of landing gear outer cylinder and piston rod forgings of different aircraft types by Erzhong Wanhang is introduced. The difficulties in the integral die forging technology of heavy key components are broken through. Finally, the forging mechanism and technology of heavy key component are summarized and prospected.

关 键 词：高强钢 大型构件 锻造工艺 再结晶机制 本构模型 宏微观模拟 

分 类 号：TG316[金属学及工艺—金属压力加工]