In this paper,the indirect thermal tensile experiments of 7075 aluminum alloy including the pre-deformation process at room temperature and the final heat tensile process were carried out,the plastic deformation behav...In this paper,the indirect thermal tensile experiments of 7075 aluminum alloy including the pre-deformation process at room temperature and the final heat tensile process were carried out,the plastic deformation behavior and forming limit of the material in the compound forming process were investigated considering three pre-deformation amounts 4%,9%,14%,two strain rates 0.001 s^(-1),0.01 s^(-1) and four forming temperatures 300℃,350℃,400℃,450℃.In the indirect hot forming process,the material is sensitive to the pre-deformation,strain rate,and forming temperature,when the strain rate is 0.01 s^(-1),the pre-deformation amount is 4%,and the forming temperature is 400℃,respectively,the maximum tensile deformation is 50 mm.Finally,taking the process in which the forming temperature is 450℃ as an example,according to the observation of the microstructure appearance of fracture,the fracture type in the hot forming process was judged as the ductile fracture.By analyzing the microstructure of the specimen treated with the quenching and artificial aging process,the eutectic T(AlZnMgCu)phase and α(Al)matrix formed a network of non-equilibrium alpha binary eutectic.展开更多
目的解决超高强钢热冲压工艺参数多且参数调整范围大,造成热冲压工艺设计难度大的问题。方法以微软SQL Server数据库和ASP.Net Core为平台,通过Visual Studio C#集成开发环境进行B/S(浏览器/服务器)架构程序开发。结果实现了集成普通板...目的解决超高强钢热冲压工艺参数多且参数调整范围大,造成热冲压工艺设计难度大的问题。方法以微软SQL Server数据库和ASP.Net Core为平台,通过Visual Studio C#集成开发环境进行B/S(浏览器/服务器)架构程序开发。结果实现了集成普通板、补丁板、拼焊板、软硬分区板、不等厚板、其他板共6类板材,15种零件类型,以及相关的零件信息、产品要求、制造工艺、材料属性、供应商、产线、设备等7类数据信息的超高强钢热冲压工艺信息化管理系统软件。结论该系统实现了超高强钢热冲压工艺数据录入与存储,多种数据信息相互关联、按需检索与联合查询以及用户管理和维护功能,为国内超高强钢热冲压工艺技术研究与产品开发提供系统架构参考。展开更多
基金Project(SKL2020005)supported by the Open Fund of State Key Laboratory of Advanced Forming Technology and Equipment,ChinaProject(206Z1803G)supported by Local Science and Technology Development Fund Guided by the Central Government of China。
文摘In this paper,the indirect thermal tensile experiments of 7075 aluminum alloy including the pre-deformation process at room temperature and the final heat tensile process were carried out,the plastic deformation behavior and forming limit of the material in the compound forming process were investigated considering three pre-deformation amounts 4%,9%,14%,two strain rates 0.001 s^(-1),0.01 s^(-1) and four forming temperatures 300℃,350℃,400℃,450℃.In the indirect hot forming process,the material is sensitive to the pre-deformation,strain rate,and forming temperature,when the strain rate is 0.01 s^(-1),the pre-deformation amount is 4%,and the forming temperature is 400℃,respectively,the maximum tensile deformation is 50 mm.Finally,taking the process in which the forming temperature is 450℃ as an example,according to the observation of the microstructure appearance of fracture,the fracture type in the hot forming process was judged as the ductile fracture.By analyzing the microstructure of the specimen treated with the quenching and artificial aging process,the eutectic T(AlZnMgCu)phase and α(Al)matrix formed a network of non-equilibrium alpha binary eutectic.
文摘目的解决超高强钢热冲压工艺参数多且参数调整范围大,造成热冲压工艺设计难度大的问题。方法以微软SQL Server数据库和ASP.Net Core为平台,通过Visual Studio C#集成开发环境进行B/S(浏览器/服务器)架构程序开发。结果实现了集成普通板、补丁板、拼焊板、软硬分区板、不等厚板、其他板共6类板材,15种零件类型,以及相关的零件信息、产品要求、制造工艺、材料属性、供应商、产线、设备等7类数据信息的超高强钢热冲压工艺信息化管理系统软件。结论该系统实现了超高强钢热冲压工艺数据录入与存储,多种数据信息相互关联、按需检索与联合查询以及用户管理和维护功能,为国内超高强钢热冲压工艺技术研究与产品开发提供系统架构参考。
