Unexpected δ-Phase Formation in Additive-Manufactured Ni-Based Superalloy
作者： Y. Idell , L. E. Levine , A. J. Allen , F. Zhang , C. E. Campbell
DOI: 10.1007/S11837-015-1772-2
关键词:
摘要: An as-built and solutionized Ni-based superalloy built by additive manufacturing through a direct metal laser sintering technique is characterized to understand the microstructural differences as compared as-wrought alloy. Initially, each layer undergoes rapid solidification it melted laser; however, part built, underlying layers experience variety of heating cooling cycles that produce significant microsegregation niobium which allows for formation deleterious δ-phase. The microstructure was Vickers hardness, optical microscopy, scanning transmission electron back-scattering diffraction, x-ray synchrotron microLaue diffraction. isothermal growth δ-phase were using synchrotron-based in situ small angle wide scattering experiments. These experimental results are with multicomponent diffusion simulations predict phase fraction composition. high residual stresses unexpected will require further annealing treatments be designed so remove these deficiencies obtain an optimized microstructure.
springer.com
harvard.edu
osti.gov
sci-hub.se 参考文章(39)
Zhou Jian, Wang Hejing, The physical meanings of 5 basic parameters for an X-ray diffraction peak and their application Chinese Journal of Geochemistry. ,vol. 22, pp. 38- 44 ,(2003) , 10.1007/BF02831544
P. Haldipur, Estimation of Single‐Crystal Elastic Constants from Ultrasonic Measurements on Polycrystalline Specimens Quantitative Nondestructive Evaluation. ,vol. 700, pp. 1061- 1068 ,(2004) , 10.1063/1.1711735
D. J. Fisher, W. Kurz, Fundamentals of Solidification ,(1990)
Lyle E. Levine, Chukwudi Okoro, Ruqing Xu, Full elastic strain and stress tensor measurements from individual dislocation cells in copper through-Si vias IUCrJ. ,vol. 2, pp. 635- 642 ,(2015) , 10.1107/S2052252515015031
Zemin Wang, Kai Guan, Ming Gao, Xiangyou Li, Xiaofeng Chen, Xiaoyan Zeng, The microstructure and mechanical properties of deposited-IN718 by selective laser melting Journal of Alloys and Compounds. ,vol. 513, pp. 518- 523 ,(2012) , 10.1016/J.JALLCOM.2011.10.107
M. Rappaz, S. A. David, J. M. Vitek, L. A. Boatner, Development of microstructures in Fe-15Ni-15Cr single crystal electron beam welds Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 20, pp. 1125- 1138 ,(1989) , 10.1007/BF02650147
Bernard Dennis Cullity, Elements of X-ray diffraction ,(1956)
Kamran Aamir Mumtaz, Poonjolai Erasenthiran, Neil Hopkinson, High density selective laser melting of Waspaloy Journal of Materials Processing Technology. ,vol. 195, pp. 77- 87 ,(2008) , 10.1016/J.JMATPROTEC.2007.04.117
Jordi Delgado, Joaquim Ciurana, Ciro A. Rodríguez, Influence of process parameters on part quality and mechanical properties for DMLS and SLM with iron-based materials The International Journal of Advanced Manufacturing Technology. ,vol. 60, pp. 601- 610 ,(2012) , 10.1007/S00170-011-3643-5
K.N. Amato, S.M. Gaytan, L.E. Murr, E. Martinez, P.W. Shindo, J. Hernandez, S. Collins, F. Medina, Microstructures and mechanical behavior of Inconel 718 fabricated by selective laser melting Acta Materialia. ,vol. 60, pp. 2229- 2239 ,(2012) , 10.1016/J.ACTAMAT.2011.12.032