Prediction of Primary Dendrite Arm Spacing in Pulsed Laser Surface Melted Single Crystal Superalloy

作     者：Shiwei Ci Jingjing Liang Jinguo Li Haiwei Wang Yizhou Zhou Xiaofeng Sun Hongwei Zhang Yutian Ding Xin Zhou Shiwei Ci;Jingjing Liang;Jinguo Li;Haiwei Wang;Yizhou Zhou;Xiaofeng Sun;Hongwei Zhang;Yutian Ding;Xin Zhou

作者机构：Shi-Changxu Innovation Center for Advanced MaterialsInstitute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials Science and EngineeringUniversity of Science and Technology of ChinaShenyang110016China Space Manufacturing Technology(CAS Key Lab)Beijing100094China Taizhou Xinma Technology Industry Develepment Co.LtdTaizhou318000China State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous MetalLanzhou University of Technology287 Langongping RoadLanzhou730000China Science and Technology On Plasma Dynamics LaboratoryAir Force Engineering UniversityXi’an710000China 

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

年 卷 期：2021年第34卷第4期

页      面：485-494页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Key R&D Program of China(No.2017YFB1103800) the National Key R&D Program of China(Nos.2017YFA0700703,2018YFB1106000) the National Natural Science Foundation of China(NSFC)(Nos.51771190,51671189,U1508213) the National High Technology Research and Development Program(863)(No.2014AA041701) the fund of the State Key Laboratory of Solidifi cation Processing in NWPU(No.SKLSP201834) 

主　　题：Additive manufacturing Nickel-base superalloy Single crystal Pulsed laser Primary dendritic arm spacing 

摘      要：Primary dendritic arm spacing(PDAS)is an important microstructure feature of the nickel-base single crystal *** this paper,a numerical model predicting the PDAS evolution with additive manufacturing parameters using pulsed laser is established,which combines the theoretical PDAS models with the temperature field calculation model during pulsed laser *** on this model,processing maps that related process parameters to the evolution of PDAS are *** obtain more accurate prediction model,the parameters of different solidification conditions,G^(-0.5)V^(-0.25) and G^(-0.5)V^(-0.25),are selected to calculate *** simulation results show that the PDAS increases as the arise of P and *** processmgPDAS map can accurately predict the evolution of PDAS with pulsed laser process parameters,which is well in accordance with the experimental ***,the PDAS values calculated by the G^(-0.5)V^(-0.25) are more in line with the experimental results than those calculated by the G^(-0.5)V^(-0.25).