Results 301 to 310 of about 88,556 (341)

TC17 titanium alloy laser melting deposition repair process and properties

Optics & Laser Technology, 2016
Abstract Due to the high manufacturing cost of titanium compressor blisks, aero engine repairing process research has important engineering significance and economic value. TC17 titanium alloy is a rich β stable element dual α+β phase alloy whose nominal composition is Ti-5Al-2Sn-2Zr-4Mo-4Cr.
Qi Liu, Yudai Wang, Hang Zheng, Kang Tang, Huaixue Li, Shuili Gong   +5 more
openaire   +1 more source

Microstructure and mechanical properties of laser melting deposited 1Cr12Ni2WMoVNb steel

Materials Science and Engineering: A, 2010
Abstract 1Cr12Ni2WMoVNb martensitic stainless steel was fabricated by laser melting deposition (LMD) process. Microstructure was characterized by optical microscopy (OM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Vickers microhardness and room-temperature tensile properties were evaluated as well. Results indicate
Y.D. Wang, H.B. Tang, Y.L. Fang, H.M. Wang   +3 more
openaire   +1 more source

A novel gradient composite material CrMnFeCoNiB2C0.5 prepared by laser melting deposition

Materials Science and Engineering: A, 2023
A novel gradient composite of CrMnFeCoNiB2C0.5 was prepared by laser melting deposition (LMD). The heat accumulation during LMD results in thin-walled structure that exhibit significant structural gradients. The material was tested with an ultimate compressive stress of 1.56 ± 0.067 GPa and a compressive strain of 19.17 ± 1.96%.
Da Sun, Jingwen Song, Yangchuan Cai, Lisong Zhu, Keping Geng, Jian Han   +5 more
openaire   +2 more sources

Effect of Deposition Strategy on Fatigue Behavior of Laser Melting Deposition 12CrNi2 Alloy Steel

2019 IEEE 4th Optoelectronics Global Conference (OGC), 2019
In this paper, the 12CrNi2 alloy steel parts were fabricated by laser melting deposition (LMD) using two kinds of deposition strategies, which were single direction scanning(SDS) and cross direction scanning(CDS). The microstructure and fatigue behavior of LMD 12CrNi2 alloy steel samples were investigated.
Wei Yi, Hui Chen, Ying Wu, Yong Chen, Hongyu Li   +4 more
openaire   +1 more source

Mechanical and electrochemical corrosion properties of titanium by laser melting deposition

Applied Physics A, 2021
In this work, samples of pure titanium (TA2) deposited on Ti-6AL-4V substrate using laser melting deposition (LMD) were prepared and microstructure, wear resistance, and corrosion behavior of the deposited material were characterized. The results showed that the microstructure of TA2 has acicular α' phases and platelet α phases structure due to the ...
Ruifeng Di, Zhu Qian, Yan Fang, Fanliang Tantai, Hongfang Tian, Jianbo Lei   +5 more
openaire   +1 more source

Advanced manufacturing approach via the combination of selective laser melting and laser metal deposition

Journal of Laser Applications, 2019
Additive manufacturing processes are frequently discussed in a competitive manner instead of being considered synergetically. This is particularly unfavorable since advanced machining processes in combination with additive manufacturing can be brought to the point that the results could not be achieved with the individual constituent processes in ...
J. Schneider, A. Seidel, J. Gumpinger, M. Riede, E. López, F. Brueckner, C. Leyens   +6 more
openaire   +1 more source

Dynamics of melting and evaporation in pulsed laser deposition: Numerical simulation

ICALEO '93: Proceedings of the Laser Materials Processing Conference, 1993
Mathematical description of the processes of laser heating, melting-solidification and evaporation of superconducting ceramics is made within the framework of the combined version of the Stefan problem including the dynamics of both phase fronts : melting-solidification and evaporation.
V. I. Mazhukin, I. Smurov, G. Flamant, P. Denney, I. Miyamoto, B. L. Mordike   +5 more
openaire   +1 more source

Multi-layer functional graded stainless steel fabricated by laser melting deposition

Vacuum, 2017
Abstract In this study, a stainless steel graded material was successfully fabricated by laser melting deposition technology. The influence of a composition gradient on the microstructure and properties of the as-deposited part was studied. The microstructure, constituent phases, elemental composition and microhardness of the stainless steel graded ...
C.H. Zhang, H. Zhang, C.L. Wu, S. Zhang, Z.L. Sun, S.Y. Dong   +5 more
openaire   +1 more source

Prediction of melt pool depth and dilution in laser powder deposition

Journal of Physics D: Applied Physics, 2006
This paper presents a mathematical model of laser powder deposition (LPD) to predict temperature field, melt pool depth and dilution. The model validated by experiments is developed using the moving heat source method. In this method, the temperature distribution inside the clad and the substrate is obtained using the superposition principle and the ...
Alireza Fathi, Ehsan Toyserkani, Amir Khajepour, Mohammad Durali   +3 more
openaire   +1 more source

Development of a Melt Pool Tracking Vision System for Laser Deposition

2009
This paper chronicles the development of a vision system for tracking melt pool morphology in the laser metal deposition process. This development is to augment an existing temperature feedback control system. Monitoring both the temperature and shape of the melt pool is necessary because of the effects of local geometry on the cooling rate at the melt
Sparks, Todd, Tang, Lie, Liou, Frank
openaire   +1 more source