首页|A novel crack-free Ti-modified Mo alloy designed for laser powder bed fusion

A novel crack-free Ti-modified Mo alloy designed for laser powder bed fusion

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  • NSTL
  • Elsevier
? 2022 Elsevier B.V.A novel crack-free Ti-modified Mo alloy with good mechanical properties was fabricated successfully by laser powder bed fusion (L-PBF). The micro-Ti particles dissolve homogeneously into the Mo matrix. The homogeneous mixture of Ti in Mo does not allow the formation of any new secondary phases. The presence of Ti increases the resistance to deformation within the grains and hence, eliminates the formation of hot-tearing cracks between Mo grains. The presence of high compressive properties (compressive yield strength (656 ± 9 MPa) and fracture strain (18.2 ± 1.9%)) in the L-PBF Tiμm/Mo alloy sample may be attributed to the presence of a high degree of geometrically necessary dislocations (GNDs). The doping of Ti in Mo not only helps in the successful fabrication of L-PBF Mo but also improves their mechanical properties, which paves the way for the fabrication of high-performance Mo-based alloys by L-PBF via innovative alloy design.

Laser powder bed fusionMechanical propertiesMicrostructureMo alloy

Liu Z.Y.、Chen Z.W.、Wu M.W.、Gao X.H.、Li M.H.、Yang C.、Prashanth K.G.、Zhang C.、Wang P.、Liu C.Y.

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Additive Manufacturing Institute Shenzhen University

Department of Materials and Mineral Resources Engineering National Taipei University of Technology

Analytical and Testing Center Huazhong University of Science and Technology

Sino-Germen College of Intelligent Manufacturing Shenzhen Technology University

Department of Mechanical and Industrial Engineering Tallinn University of Technology

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2022

10.1016/j.jallcom.2022.164802

Journal of Alloys and Compounds

Journal of Alloys and Compounds

EISCI
ISSN：0925-8388
年,卷(期)：2022.910
  • 11
  • 58