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Effect of the capsule on deformation and densification behavior of nickel-based superalloy compact during hot isostatic pressing

查看全文 作　　者：Lebiao [1]Yang;Xiaona [1]Ren;Chao [2]Cai;Pengju [2]Xue;MIrfan [1]Hussain;Yusheng [2]Shi;Changchun [1]Ge 高影响力作者 机构地区：[1]Institute of Powder Metallurgy and Advanced Ceramics,School of Materials and Engineering,University of Science and Technology Beijing,Beijing 100083,China;[2]State Key Laboratory of Materials Processing&Die and Mould Technology,School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China高影响力机构 出　　处：《International Journal of Minerals,Metallurgy and Materials》索引2023年第30卷第1期,共9页高影响力期刊 基　　金：financially supported by Guangdong Province Key Field R&D Program, China (No. 2019B01 0935001);the National Nature Science Foundation of China (No. 51905192);the Fundamental Research Funds for the Central Universities (No. FRT-TP-20-006A2) 摘　　要：The Shima yield criterion used in finite element analysis for nickel-based superalloy powder compact during hot isostatic pressing(HIP) was modified through uniaxial compression experiments. The influence of cylindrical capsule characteristics on FGH4096M superalloy powder compact deformation and densification behavior during HIP was investigated through simulations and experiments. Results revealed the simulation shrinkage prediction fitted well with the experimental shrinkage including a maximum shrinkage error of 1.5%. It was shown that the axial shrinkage was 1.7% higher than radial shrinkage for a cylindrical capsule with the size of ∮50 mm × 100 mm due to the force arm difference along the axial and radial direction of the capsule. The stress deviated from the isostatic state in the capsule led to the uneven shrinkage and non-uniform densification of the powder compact. The ratio of the maximum radial displacement to axial displacement increased from0.47 to 0.75 with the capsule thickness increasing from 2 to 4 mm. The pressure transmission is related to the capsule thickness, the capsule material performance, and physical parameters in the HIP process. 关 键 词：hot isostatic pressing nickel-based superalloy compact CAPSULE DENSIFICATION DEFORMATION
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