Results 191 to 200 of about 1,670 (229)
Some of the next articles are maybe not open access.
A viscoplastic model for numerical simulation of welding and post-weld heat treatment
Le Journal de Physique IV, 1999A viscoplastic model is developed to perform numerical simulation of welding and post-weld heat treatment in an industrial context. It can describe with the same formalism the steel inelastic behaviour all along the process: time-independent plastic at low temperature, viscoplastic at higher temperature and viscous fluid for melted metal.
A. Razakanaivo, F. Waeckel
openaire +1 more source
Improvement of Post Weld Heat Treatment Rules on Welded Joints
1989In order to improve the post weld heat treatment rules on welded joints, a cooperative programme of research, sustained by the Minsistry of Research and Technology has been set up on 1985. The study concerning the behaviour to fracture of as welded and post weld heat treated joints in SE 701 steel with great sizes permitted to lay down the influence of
J. Gilgert +5 more
openaire +1 more source
Post Weld Heat Treatment of Friction Stir Welded AA2017
2012In this study a friction stir welded AA2017 is post weld heat treated at 500 °C for holding time of 20, 40 and 60min then quenched in water and naturally aged. The effect of post weld heat treatment on the microstructure and hardness is investigated across the transverse cross section of the weld.
M. M. Z. Ahmed, B. P. Wynne
openaire +1 more source
The influence of post-weld heat treatment on microstructure of TC4 weld joints
Materials Research Innovations, 2015The effect of one two-step high-temperature post-weld heat treatment on the microstructure of TC4 weld joints has been studied in our experiment, and as a result, the weld joints with attractive mechanical property have been obtained. The weld joints consisted of lamellar martensitic α, retained β and primary α, therefore microstructure of the weld ...
J. Liu, H. Qiao, Y. Hu
openaire +1 more source
Effect of post-weld heat treatment on the joint of friction-welded 1MnCrMoNi steel
Science and Technology of Welding and Joining, 2021The microstructural evolution, mechanical and electrochemical properties of the rotary friction welding joint of 1MnCrMoNi maraging steel were investigated after post-weld heat treatment (PWHT).
Qidong Nie +6 more
openaire +1 more source
Low stress welding technology without post-weld heat treatment
Materials Science and Technology, 2009In order to assure the tightness and the service life of a full welded body ball valve, the temperature of grommet cannot exceed 150°C. Therefore, post-weld heat treatment cannot be used to relieve the welding residual stresses. In this study, a low stress welding technology was studied.
J. J. Xu, L. G. Chen, C. Z. Ni
openaire +1 more source
Effect of Post Weld Heat Treatment on Weld Hardness Quality of P91 Welded Pipes
Applied Mechanics and Materials, 2015Quality of a weld produced is generally evaluated by different parameters such as weld size, bead geometry, deposition rate, hardness and strength. A common problem that has been faced at the construction sites is to obtain a good welded joint having the required strength with minimal detrimental residual stresses to avoid any premature cracking due to
Mohd Amin Abd Majid, Muhammad Sarwar
openaire +1 more source
The effect of post weld heat treatment on welds in steel structures
1983The effect of post weld heat treatment (PWHT) on residual stresses, yield strength and toughness as well as on microstructural features of submerged are weld metal was studied with three types of C-Mn-steels. All techniques used for measuring residual stress reduction in PWHT were found insufficient to adequately characterise the stress distribution ...
Gren, Pekka +3 more
openaire +3 more sources
Residual Stress Relief in Post-Weld Heat Treatment
Volume 6: Materials and Fabrication, Parts A and B, 2008This paper focuses on analysis of weld residual stress relief process during furnace-based uniform post-weld heat treatment (PWHT). Two classes of pressure vessel steels: 2-1/4CrMo and carbon steel are considered in seam weld configurations. It is found that the dominant mechanism for residual stress relief is the creep relaxation that occurs much ...
Pingsha Dong, Jeong K. Hong
openaire +1 more source
Effect of Pre- and Post-weld Heat Treatments on Linear Friction Welded Ti-5553
Metallurgical and Materials Transactions A, 2014Linear friction welding allows solid-state joining of near-beta (β) titanium alloy Ti-5553 (Ti-5Al-5V-5Mo-3Cr). In the as-welded condition, the weld zone (WZ) exhibits β grain refinement and marked softening as compared with Ti-5553 in the solution heat treated and aged condition.
Wanjara, Priti +5 more
openaire +2 more sources