Results 31 to 40 of about 74,881 (288)

High-strength type-B sleeve for pipeline girth weld repair and its key application technology

You-qi chuyun, 2022
In recent years, the repair technology of type-B sleeves has been widely used for the hazard control of pipeline girth welds. However, the prominent problems such as the unreasonable geometrical dimension of sleeve and the delayed cracking of fillet weld
Xinwei ZHAO, Gaofeng WANG, Fengping YANG, Qiang BAI, Yinglai LIU, Guodong XIAN, Baolong SUN, Xianghui NIE, Yan XU   +8 more
doaj   +1 more source

Duplex Stainless Steel Laser‐Surface Textured: Stability in Brine Solution

Advanced Engineering Materials, EarlyView.
Controlled laser‐surface treatment (LST) of duplex DSS2205 steel is performed to increase its stability in brine solution under cyclic electrochemical assays. The superior protection with respect to flat and smooth panels is attributed to the presence of FeCr2O4 as the main protective oxide layer in the LST surface, after corrosion tests. The stability
Mohammad Rezayat, Hamidreza Enshaei, Elaine Armelin, José I. Iribarren, Antonio Mateo, Miguel Morales   +5 more
wiley   +1 more source

Influence of Multiple Repair Welding on Microstructure and Properties of 06Cr19Ni10 Stainless Steel

Chinese Journal of Mechanical Engineering
Repair welding technology is widely used in the manufacturing and maintenance of rail transit equipment to repair welding defects. However, repair welding induces modifications in joint performance, and it is necessary to study the microstructure ...
Qimeng Liu, Jingyu Chang, Yuanzhi Wang, Dong Xia, Jianfei Zhang, Xinlong Guan, Yuwei Zhou, Bing Yang   +7 more
doaj   +1 more source

Effect of repair weld length on microstructure evolution and mechanical properties of 30CrMnSiNi2A ultra-high strength steel

Journal of Materials Research and Technology, 2023
OM, SEM, EBSD and a series of mechanical property tests were used to study the influence of different welding lengths on the original welded joints. The results show that the filler welding area is austenitic structure due to the introduction of nickel ...
Min Zhang, Zhiqiang Zhang, Longyu Lei, Wenkun Zhou, Mingke Du, Bingxian Zhang   +5 more
doaj   +1 more source

Tube welding and brazing [PDF]

, 1969
Brochures outline the tools, equipment, materials, and techniques used for joining tubes by automatic and semiautomatic welding and brazing. A few of the metals being joined are stainless steels of various diameters and thickness.
Poorman, R. M.
core   +1 more source

Laser Metal Deposition of Aluminum Alloys 7075 and 5083 with the Addition of Volatile Alloying Elements through Powder Blending

Advanced Engineering Materials, EarlyView.
This study investigates laser metal deposition of aluminum alloys EN AW‐7075 and EN AW‐5083, using powder blending to compensate zinc and magnesium evaporation. In situ alloying and ex situ alloying with ZnAl12 and AZ91 preserve near‐standard compositions and improve mechanical properties.
Finn Bendixen, Anastasiya Toenjes, Annika Bohlen, Thomas Seefeld   +3 more
wiley   +1 more source

Tungsten Argon Arc Welding Crack Analysis and Numerical Simulat ion for Residual Stress of Co-Based Superalloy [PDF]

Archives of Metallurgy and Materials
The influence of welding current decay time on the repair of Co-based superalloy by tungsten argon arc welding spot welding are investigated by means of simulation and experiments.
Zhongyao Li, Li Feng, Jianjun Guan, Yan Zhao, Yanhong Yang, Jiaojiao Zhu   +5 more
doaj   +1 more source

Repairing an Implant Titanium Milled Framework using Laser Welding Technology: A Clinical Report [PDF]

, 2009
The application of laser welding technology allows titanium to be welded predictably and precisely to achieve accurate fit of a milled framework. Laser energy results in localized heat production, thereby reducing thermal expansion.
Prasad, Soni, Monaco, Jr., Edward A.
core   +1 more source

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

Effect of the repair welding process on the microstructure and hardness of the T-JOINT S355J2+N steel

Metalurgija, 2023
The purpose of this research is to determine effect of the repair welding process on the microstructure and hardness of the T-joint S355J2+N steel. This process was carried out by moving the welding position 10 mm from the initial position using Gas ...
M. F. A. Sabana, N. Muhayat, . Triyono
doaj