Effects of geometrical size and structural feature on the shape-distortion behavior of hollow Ti-alloy blade fabricated by additive manufacturing process

被引:15
作者
Gao, Shuang [1 ]
Tan, Zhijun
Lan, Liang
He, Bo [1 ]
机构
[1] Shanghai Univ Engn Sci, Sch Mat Engn, Shanghai 201620, Peoples R China
关键词
laser additive manufacturing; titanium alloy; hollow blade; residual stress; shape-distortion rule; RESIDUAL-STRESSES;
D O I
10.2351/7.0000034
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In the additive manufacturing (AM) process, metal powder can be directly used to produce metal components. Unfortunately, a large thermal gradient is developed during the AM process, which leads to the generation of residual stress and complex shape-distortions. In this study, the influence of the geometrical size and structural features of a hollow Ti-alloy blade prepared by the AM process on the shape-distortion behavior was systematically investigated using the three-dimensional (3D) blue-light scanning technology. The results indicated that the concentrated residual stress was developed on the surface of the blade. The compressive residual stress induced a bulging distortion, while the tensile residual stress resulted in denting distortion on the blade surfaces. When the blade height and torsion angle increased, the shape-distortion was aggravated owing to the accumulation of microscopic strain and the elevated temperature gradient. However, the shape-distortion mitigated when the wall thickness significantly increased or the stiffened plates were set within the blade cavities, owing to a strengthening structural constraint which inhibited the distortion behavior. In addition, a control method for the shape-distortion during AM process was able to implement based on the proper optimization of the geometrical sizes and structural features of complex 3D-printed components.
引用
收藏
页数:8
相关论文
共 19 条
[1]   In-situ distortions in LMD additive manufacturing walls can be measured with digital image correlation and predicted using numerical simulations [J].
Biegler, M. ;
Graf, B. ;
Rethmeier, M. .
ADDITIVE MANUFACTURING, 2018, 20 :101-110
[2]   Investigation on reducing distortion by preheating during manufacture of aluminum components using selective laser melting [J].
Buchbinder, Damien ;
Meiners, Wilhelm ;
Pirch, Norbert ;
Wissenbach, Konrad ;
Schrage, Johannes .
JOURNAL OF LASER APPLICATIONS, 2014, 26 (01)
[3]   Additive manufacturing of metallic components - Process, structure and properties [J].
DebRoy, T. ;
Wei, H. L. ;
Zuback, J. S. ;
Mukherjee, T. ;
Elmer, J. W. ;
Milewski, J. O. ;
Beese, A. M. ;
Wilson-Heid, A. ;
De, A. ;
Zhang, W. .
PROGRESS IN MATERIALS SCIENCE, 2018, 92 :112-224
[4]   Effect of stress relaxation on distortion in additive manufacturing process modeling [J].
Denlinger, Erik R. ;
Michaleris, Pan .
ADDITIVE MANUFACTURING, 2016, 12 :51-59
[5]   Comparisons of laser powder bed fusion additive manufacturing builds through experimental in situ distortion and temperature measurements [J].
Dunbar, Alexander J. ;
Denlinger, Erik R. ;
Gouge, Michael F. ;
Simpson, Timothy W. ;
Michaleris, Pan .
ADDITIVE MANUFACTURING, 2017, 15 :57-65
[6]  
E G, 2019, ANN THORAC SURG, V107, pe119, DOI [10.1016/j.athoracsur.2018.06.044, DOI 10.1016/J.PMATSCI.2019.100590]
[7]   Additive manufacturing of metals [J].
Herzog, Dirk ;
Seyda, Vanessa ;
Wycisk, Eric ;
Emmelmann, Claus .
ACTA MATERIALIA, 2016, 117 :371-392
[8]   Experimental comparison of residual stresses for a thermomechanical model for the simulation of selective laser melting [J].
Hodge, N. E. ;
Ferencz, R. M. ;
Vignes, R. M. .
ADDITIVE MANUFACTURING, 2016, 12 :159-168
[9]   Assessing and comparing influencing factors of residual stresses in selective laser melting using a novel analysis method [J].
Kruth, Jean-Pierre ;
Deckers, Jan ;
Yasa, Evren ;
Wauthle, Ruben .
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE, 2012, 226 (B6) :980-991
[10]   Residual Stress in Metal Additive Manufacturing [J].
Li, C. ;
Liu, Z. Y. ;
Fang, X. Y. ;
Guo, Y. B. .
4TH CIRP CONFERENCE ON SURFACE INTEGRITY (CSI 2018), 2018, 71 :348-353