Microstructure and mechanical properties characterization of aged and repair welded Alloy 617MWelding in the World - Tập 67 - Trang 1155-1168 - 2023
Bhavana Unikela, Harish Chandra Dey, Shaju K. Albert
A chemistry-controlled variant of nickel-based Alloy 617 (UNS N06617) designated as Alloy 617M is the candidate structural material for superheater header and tubing and high pressure and intermediate pressure steam turbines for Indian advanced ultra-supercritical (AUSC) coal-fired thermal power plant mission program. This study evaluates the effect of ageing due to service exposure on microstruct...... hiện toàn bộ
Effect of electromagnetic stirring on microstructure formation in 12%Ni steel ESW weld metalWelding in the World - Tập 67 - Trang 141-149 - 2022
Takanori Ito, Osamu Ozaki, Tomohiro Nishimura, Hiroshi Hashimoto, Hidenori Nako, Keito Ishizaki
Liquefied natural gas (LNG) has recently received much attention worldwide because of environmental concerns. In general, users and fabricators use high-cost welding materials such as Ni-based weld metals. For highly efficient welding and lower cost welding materials, our research group are developing 12%Ni steel weld metals for electroslag welding (ESW). However, it has reported that the Charpy i...... hiện toàn bộ
Hybrid Laser/GMA Welding Aluminium Alloy 7075Welding in the World - Tập 50 - Trang 51-57 - 2013
B. Hu, I. M. Richardson
Aluminium alloy 7075 is a heat treatable alloy based on Al-Mg-Zn system (5–6 wt % Zn, 2–3 wt % Mg and 1–2 wt % Cu) with the high strength obtained by precipitation hardening treatment. This alloy has the characteristics of a high thermal sensitivity and a low eutectic liquidus temperature range, which make it difficult to weld. The severe HAZ softening, the cracking in the weld and the material lo...... hiện toàn bộ
Cathode fall voltage of TIG arcs from a non-equilibrium arc modelWelding in the World - Tập 59 - Trang 127-135 - 2014
D. Uhrlandt, M. Baeva, A. V. Pipa, R. Kozakov, G. Gött
This work presents modelling results concerning a tungsten inert gas (TIG) welding arc. The model provides a consistent description of the free burning arc, the arc attachment and the electrodes. Thermal and chemical non-equilibrium is considered in the whole arc area, and a detailed model of the cathode space-charge sheath is included. The mechanisms in the cathode pre-sheath are treated in the f...... hiện toàn bộ
The reconsitution of the weld pool surface in stationary TIG welding process with filler wireWelding in the World - Tập 65 - Trang 2437-2447 - 2021
Shurong Yu, Guangyin Liu, Jing He, Huizi Chen, Ding Fan, Jiankang Huang, Wei Pan, Shien Liu
The behavior of the welding pool plays an important role in determining the quality of the weld, and the surface behavior of the welding pool contains some important information as feedback to adjust welding parameters. In order to study the dynamic characteristics of the molten pool surface in the TIG welding process with the filler wire, a grid structure laser measurement platform, based on the ...... hiện toàn bộ