Additive manufacturing of high-strength commercially pure titanium through lanthanum oxide addition

被引:20
作者
Wang, Qiang [1 ,2 ]
Zhang, Kang [1 ,2 ]
Qiu, Dong [3 ]
Niu, Wenjuan [1 ,2 ]
机构
[1] Xian Univ Architecture & Technol, Sch Met Engn, Xian 710055, Peoples R China
[2] Xian Univ Architecture & Technol, Natl & Local Joint Engn Res Ctr Funct Mat Proc, Xian 710055, Peoples R China
[3] RMIT Univ, Ctr Addit Mfg, Sch Engn, Melbourne, Vic 3053, Australia
关键词
Titanium; Additive manufacturing; Selective laser melting; Grain refinement; Mechanical properties; GRAIN-REFINEMENT; TI-6AL-4V; ALLOYS; MICROSTRUCTURE; BEHAVIOR; TRANSFORMATION; MECHANISMS; EVOLUTION;
D O I
10.1016/j.matchar.2021.111074
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Preventing the formation of columnar grains and refining the microstructure in an effective way have been great challenges in additive manufacturing of titanium and its alloys. In this paper, the effect of La2O3 addition on the microstructure and mechanical properties of commercially pure titanium (CP-Ti) fabricated through selective laser melting (SLM) was comprehensively studied. Experimental results revealed that the microstructure of CP-Ti were composed of massive phase and fine parallel laths, whereas a homogenous microstructure with acicular colonies was obtained in CP-Ti + La2O3. Due to the increase of nucleation sites in SLM-fabricated CP-Ti + La2O3, the massive phase transformation was suppressed, and the average grain size was refined to 1.47 mu m. The spherical La2O3 particles with the size of less than 50 nm were uniformly distributed within the alpha matrix, containing high-density dislocations and twins. After grain refinement, the yield strength and ultimate tensile strength were enhanced up to 858 MPa and 940 MPa, respectively, with the elongation of 8.6%. The enhancement of mechanical properties was mainly attributed to the combined effects of grain refinement strengthening, dislocation strengthening and La2O3 dispersion strengthening.
引用
收藏
页数:10
相关论文
共 38 条
[1]   Effect of build geometry on the β-grain structure and texture in additive manufacture of Ti-6Al-4V by selective electron beam melting [J].
Antonysamy, A. A. ;
Meyer, J. ;
Prangnell, P. B. .
MATERIALS CHARACTERIZATION, 2013, 84 :153-168
[2]   A comparative study on the nanoindentation behavior, wear resistance and in vitro biocompatibility of SLM manufactured CP-Ti and EBM manufactured Ti64 gyroid scaffolds [J].
Ataee, Arash ;
Li, Yuncang ;
Wen, Cuie .
ACTA BIOMATERIALIA, 2019, 97 :587-596
[3]   Manufacture by selective laser melting and mechanical behavior of commercially pure titanium [J].
Attar, H. ;
Calin, M. ;
Zhang, L. C. ;
Scudino, S. ;
Eckert, J. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 593 :170-177
[4]   Perspectives on Titanium Science and Technology [J].
Banerjee, Dipankar ;
Williams, J. C. .
ACTA MATERIALIA, 2013, 61 (03) :844-879
[5]  
Banerjee S., 2010, PHASE TRANSFORMATION
[6]   Peritectic titanium alloys for 3D printing [J].
Barriobero-Vila, Pere ;
Gussone, Joachim ;
Stark, Andreas ;
Schell, Norbert ;
Haubrich, Jan ;
Requena, Guillermo .
NATURE COMMUNICATIONS, 2018, 9
[7]   Promoting the columnar to equiaxed transition and grain refinement of titanium alloys during additive manufacturing [J].
Bermingham, M. J. ;
StJohn, D. H. ;
Krynen, J. ;
Tedman-Jones, S. ;
Dargusch, M. S. .
ACTA MATERIALIA, 2019, 168 :261-274
[8]   Effect of trace lanthanum hexaboride and boron additions on microstructure, tensile properties and anisotropy of Ti-6Al-4V produced by additive manufacturing [J].
Bermingham, M. J. ;
McDonald, S. D. ;
Dargusch, M. S. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2018, 719 :1-11
[9]   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
[10]   Metal Additive Manufacturing: A Review [J].
Frazier, William E. .
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2014, 23 (06) :1917-1928