Effect of Heat Treatment on Microstructure and Mechanical Properties of K418 Superalloy Prepared by Laser Powder Bed Fusion

被引：0
作者：
Wei, Pei [1 ,2 ]
Chen, Yi [1 ,2 ]
Chen, Zhen [3 ]
Yao, Sen [3 ]
Huang, Xiaoyong [1 ,2 ]
Li, Min [3 ]
Wang, Jiajian [3 ]
Lu, Bingheng [1 ,2 ,3 ]
机构：
[1] Hefei Univ Technol, Sch Mech Engn, Hefei 230009, Anhui, Peoples R China
[2] Anhui Engn Lab Intelligent, CNC Technol & Equipment, Hefei 230009, Peoples R China
[3] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China
来源：
ADVANCED ENGINEERING MATERIALS | 2025年
基金：
中国国家自然科学基金;
关键词：
heat treatment; laser powder bed fusion; mechanical properties; microstructures; superalloys; NICKEL-BASED SUPERALLOY; BEHAVIOR; PROGRESS; GAMMA';
D O I：
10.1002/adem.202403067
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
For the purpose of optimizing the microstructures and the resultant mechanical properties of K418 superalloy fabricated by laser powder bed fusion (LPBF), various heat treatments including direct aging and solution/aging treatments at various temperatures and durations are undertaken. The effect of heat-treated temperature and duration on microstructure and mechanical properties is studied systematically. The results show that the gamma ' and metal carbide (MC)-type carbide precipitates are formed during heat treatment and growth with increasing solution and aging temperature, which have a significant impact on the mechanical properties of LPBF-ed K418 superalloy. Compared to solution/aging heat treatment, direct aging heat treatment is more conducive to improving the mechanical properties of materials. The as-built K418 superalloy exhibits a maximum tensile strength of approximate to 1169 +/- 28.3 MPa at aging temperature of 800 degrees C for 16 h, while its elongation is relatively low, approximate to 4.83 +/- 0.78%. The strengthening mechanisms have been confirmed by microstructure analysis to be secondary phase and grain boundary strengthening mechanisms.
引用
收藏
页数：15
相关论文
共 39 条
[1]   Effect of Heat Treatment on the Microstructure and Mechanical Properties of Inconel 718 [J].
Anbarasan, N. ;
Gupta, Bikash Kumar ;
Prakash, S. ;
Muthukumar, P. ;
Oyyaravelu, R. ;
Kumar, John Felix R. ;
Jerome, S. .
MATERIALS TODAY-PROCEEDINGS, 2018, 5 (02) :7716-7724
[2]   Evaluation of high-temperature creep behavior in Inconel-713C nickel based superalloy considering effects of stress levels [J].
Azadi, Mohammad ;
Azadi, Mahboobeh .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 689 :298-305
[3]  
Bhambri A. K., 1975, Metallurgical Transactions B (Process Metallurgy), V6B, P523, DOI 10.1007/BF02913844
[4]   Investigations of γ′, γ" and δ precipitates in heat-treated Inconel 718 alloy fabricated by selective laser melting [J].
Cao, G. H. ;
Sun, T. Y. ;
Wang, C. H. ;
Li, Xing ;
Liu, M. ;
Zhang, Z. X. ;
Hu, P. F. ;
Russell, A. M. ;
Schneider, R. ;
Gerthsen, D. ;
Zhou, Z. J. ;
Li, C. P. ;
Chen, G. F. .
MATERIALS CHARACTERIZATION, 2018, 136 :398-406
[5]   Effect of heat treatment on the microstructure and mechanical properties of Inconel 718 processed by selective laser melting [J].
Chlebus, E. ;
Gruber, K. ;
Kuznicka, B. ;
Kurzac, J. ;
Kurzynowski, T. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2015, 639 :647-655
[6]   Texture control during laser deposition of nickel-based superalloy [J].
Dinda, G. P. ;
Dasgupta, A. K. ;
Mazumder, J. .
SCRIPTA MATERIALIA, 2012, 67 (05) :503-506
[7]  
Dou M. N., 2023, J. Mater. Res. Technol, V24, P8909
[8]   Augmenting wire arc additive manufacturing with laser forming for generative realization of complex geometries [J].
Gudur, Srinath ;
Simhambhatla, Suryakumar .
OPTIK, 2022, 262
[9]   Influence of heat treatment on the microstructure and tensile properties of Ni-base superalloy Haynes 282 [J].
Joseph, Ceena ;
Persson, Christer ;
Colliander, Magnus Hornqvist .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 679 :520-530
[10]   Heat treatment for metal additive manufacturing [J].
Laleh, Majid ;
Sadeghi, Esmaeil ;
Revilla, Reynier, I ;
Chao, Qi ;
Haghdadi, Nima ;
Hughes, Anthony E. ;
Xu, Wei ;
De Graeve, Iris ;
Qian, Ma ;
Gibson, Ian ;
Tan, Mike Y. .
PROGRESS IN MATERIALS SCIENCE, 2023, 133
1234