Integrated Modeling of Process–Microstructure–Property Relations in Friction Stir Additive Manufacturing

作     者：Zhao Zhang Zhi-Jun Tan Jian-Yu Li Yu-Fei Zu Jian-Jun Sha Zhao Zhang;Zhi-Jun Tan;Jian-Yu Li;Yu-Fei Zu;Jian-Jun Sha

作者机构：State Key Laboratory of Structural Analysis for Industrial EquipmentDepartment of Engineering MechanicsFaculty of Vehicle Engineering and MechanicsDalian University of TechnologyDalian 116024China School of Aeronautics and AstronauticsDalian University of TechnologyDalian 116024China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2020年第33卷第1期

页      面：75-87页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：financially supported by the National Natural Science Foundation of China(No.11572074) 

主　　题：Additive manufacturing Friction stir welding Integrated model Precipitate Re-stirring Reheating 

摘      要：Friction stir additive manufacturing is a newly developed solid-state additive manufacturing *** material in the stirring zone can be re-stirred and reheated,and mechanical properties can be changed along the building *** integrated model is developed to investigate the internal relations of process,microstructure and mechanical *** heat source model is used to simulate the friction stir additive manufacturing process to obtain the temperature histories,which are used in the following microstructural *** Carlo method is used for simulation of recrystallization and grain *** evolution model is used for calculation of precipitate size *** property is then *** are used for validation of the predicted grains and *** indicate that the average grain sizes on diff erent layers depend on the temperature in stirring and re-stirring *** the increase in building height,average grain size is decreased and hardness is *** increase in layer thickness can lead to temperature decrease in reheating and re-stirring processes and then lead to the decrease in average grain size and increase of hardness in stir zone.