Results 31 to 40 of about 170,204 (307)

Effects of High Toughness and Welding Residual Stress for Unstable Fracture Prevention

Applied Sciences, 2020
Unstable fractures generally occur in brittle materials under low-temperature service conditions. Toughness and welding residual stress are the main factors that should be evaluated when defining a brittle crack propagation path. In this study, a rainbow
Gyubaek An, Jeongung Park, Ilwook Han
doaj   +1 more source

Welding process optimization for blast furnace shell by numerical simulation and experimental study

Journal of Materials Research and Technology, 2023
At cold temperatures, the stress after welding a blast furnace shell is not completely released because of the fast cooling speed, which results in cracks.
Hongchao Ji, Jie Yuan, Xiaomin Huang, Xiaoming Yang, Shengqiang Liu, Baoyu Wang   +5 more
doaj   +1 more source

Comparison of Measured Residual Stress Distributions in Extra-Thick Butt Welds Joined by One-Pass EGW and Multipass FCAW

Advances in Mechanical Engineering, 2014
This study is to measure the welding residual stress distributions in a 70 mm-thick butt weld by one-pass electron gas welding using both the inherent strain method and neutron diffraction method, respectively.
Jeong-Ung Park, GyuBaek An, Wan Chuck Woo, Jae-hyouk Choi, Ninshu Ma   +4 more
doaj   +1 more source

Welding Residual Stress Elimination Technique in the Top Chord of Main Truss of Steel Truss Bridge

Buildings, 2023
The large-amplitude fluctuations of ultrasound in high-energy ultrasonic stress relieving cause the crystal grains or lattices in the high residual stress zone to vibrate or creep alternately.
Long Piao, Jianfeng Yuan, Niujing Ma, Changqi Yue, Ronghui Wang, Gangbing Zheng   +5 more
doaj   +1 more source

Effect of welding residual stress on operating stress of nuclear turbine low pressure rotor

, 2020
The purpose of this study is to investigate the effect of welding residual stress on operating stress in designing a nuclear turbine welded rotor. A two-dimensional axisymmetric finite element model is employed to calculate the residual stress before and
Long Tan, Liangying Zhao, P. Zhao, Lulu Wang, Jiajing Pan, X. Zhao   +5 more
semanticscholar   +1 more source

Effect of Residual Stress on the Ultimate Bearing Capacity of Titanium Alloy Pressure Spherical–Cylindrical-Combined Shells

Metals
Titanium alloy pressure spherical–cylindrical shells enable the effective utilization of the strength of spherical and cylindrical pressure-resistant shell components.
Yuxuan Wang, Jianting Guo, Bowen Zhang, Keke Ge, Liangbi Li, Feng Lv   +5 more
doaj   +1 more source

Study on Residual Stress in Single-sided and Double-sided Friction Stir Welding of Thick Plate 2219 Aluminum Alloy

Yuanzineng kexue jishu
Welding residual stress is related to the mechanical properties and service life of components. To accurately grasp the residual stress distribution of thick plate 2219 aluminum alloy after friction stir welding (FSW), optimize the welding process, and ...
WANG Binrong
doaj   +1 more source

Numerical simulation of the influence of welding direction on residual stress after double welding of Q345 stacked-plates

Metalurgija, 2020
Based on the welding numerical simulation software Visual-environment, this paper calculates and analyzes the residual stress field for the double pass welding of Q345 stacked plates. The paper mainly studies the influence of different welding directions
B. Xu, H. Fu, Q. H. Xiao, S. Li, T. Kang
doaj  

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Residual stress and distortion in thick-plate weld joint of AF1410 steel: finite element simulations and experimental studies

Materials Research Express, 2022
The quantification of the residual stress and distortion in the thick-plate weld joint of AF1410 steel has great significance, which is the basis for the safety and process design of the component.
Kaiyuan Zhang, Wenchao Dong, Shanping Lu
doaj   +1 more source