Results 31 to 40 of about 1,957,261 (172)

Adaptive optics for control of the laser welding process

EPJ Web of Conferences, 2013
The laser head with fixed focus optics is commonly used for the deep penetration laser welding. In such case the geometry and position of the beam waist are defined by the focusing lens.
Jedlička Petr, Řeřucha Šimon, Šarbort Martin, Mrňa Libor   +3 more
doaj   +1 more source

Grain refinement and laser energy distribution during laser oscillating welding of Invar alloy

Materials & Design, 2020
Laser oscillating welding method was employed to welding of Invar alloy so as to achieve grain refinement and decrease internal defects. Effects of frequency and amplitude of beam oscillation with sinusoidal trajectory on weld appearance and ...
Zhenguo Jiang, Xi Chen, Hao Li, Zhenglong Lei, Yanbin Chen, Shibo Wu, Yuhua Wang   +6 more
doaj   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

Optimization of tensile strength of ferritic / austenitic laser welded components [PDF]

, 2008
Ferritic/Austenitic (F/A) joints are a popular dissimilar metals combination used in many applications. F/A joints are usually produced using conventional processes.
Anawa, E., Olabi, Abdul-Ghani, A.G. Olabi, E.M. Anawa   +3 more
core   +1 more source

Weld formation and porosity in TC4 joint by oscillating laser beam welding with circle trajectory model

Journal of Materials Research and Technology
The pores problem is a challenging problem in laser beam welding titanium alloy TC4. Oscillating laser beam welding, as a new welding process, can effectively control the behavior of the molten pool, and is beneficial to the escape of pores, which holds ...
Tianqing Li, Yongjie Wan, Zhiwei Bi, Siyu Yang, Daoliang Wu, Yucheng Lei   +5 more
doaj   +1 more source

Research of temperature and microstructure in friction stir welding of Q235 steel with laser-assisted heating

Results in Physics, 2018
In this paper, a three dimension heat source is developed in laser heated friction stir welding. The model was calculated by CFD software FLUENT, and the temperature field and flow field of the welding are obtained.
Xinjiang Fei, Zhifeng Wu
doaj   +1 more source

High‐Entropy Alloy Interlayers Toward Advanced Joining for High‐Performance Structural Applications: Current Progress and Emerging Challenges

Advanced Engineering Materials, EarlyView.
HEA interlayers offer a versatile route for joining high‐performance structural materials. Their compositional and structural design regulates interfacial reactions, suppresses brittle IMCs, and improves metallurgical bonding. Sandwich interlayers further integrate defect healing with precipitation strengthening, enabling improved strength–ductility ...
Lin Yuan, Jiafen Song, Jinglong Li, Jiangtao Xiong, Tao Yang   +4 more
wiley   +1 more source

Neutron strain scanning of fibre and diode laser welds in stainless steel and Ti6Al4V [PDF]

, 2014
Fibre lasers provide an unprecedented combination of high beam quality, brightness and low cost. Fibre laser beams can provide an exceptionally high power density beam with a relatively large depth of focus.
Hughes, Darren J., Voisey, K.T., Folkes, J., Voisey, K. T., Hughes, D.J., Srithorn, J.   +5 more
core   +1 more source

Impact of Beam Shape and Frequency on Weld Seam Geometry and Penetration Depth Using a Coherent Beam Combining Laser

Applied Sciences
The geometry and quality of a weld seam are critical factors in laser beam welding, influencing mechanical performance and structural integrity. Dynamically modulated laser beams provide a precise means of tailoring energy input in high-power laser ...
Karthik Ravi Krishna Murthy, Reza Sanei, Abhay Sharma, Simon Olschok, Uwe Reisgen   +4 more
doaj   +1 more source