Results 221 to 230 of about 19,335 (278)

Energy-Based Skin Rejuvenation: A Review of Mechanisms and Thermal Effects. [PDF]

J Cosmet Dermatol
Jia X, Feng Y.
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Full Rejuvenation Heat Treatment of GTD 111DS

Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications, 2022
Abstract Previous studies performed by TEServices, Sulzer and EPRI showed that GTD111 DS metallurgical and mechanical [stress rupture (SR) and low cycle fatigue (LCF)] properties can be restored close to new with and without hot isostatic pressing (HIP) followed by full solution heat treatment (FSHT).
Hans van Esch, Stijn Pietersen, Wayne Greaves, Alex Bridges, John Scheibel   +4 more
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Full Rejuvenation Heat Treatment of MGA 1400DS

Volume 8: Industrial and Cogeneration; Manufacturing Materials and Metallurgy, 2023
Abstract Directionally Solidified (DS) nickel-base superalloys have been extensively used for power generation turbine blades. These blades are exposed to high stresses and temperatures for extended periods of time and aging the microstructural and reducing the mechanical properties.
Hans van Esch, Stijn Pietersen, Wayne Greaves, Alex Bridges, John Scheibel   +4 more
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Effect of Rejuvenation Heat Treatment on the Degraded Turbine Blades

Journal of Failure Analysis and Prevention, 2020
This paper presents a novel approach to estimate the extended lifetime of first-stage turbine blades made of directionally solidified GTD-111 nickel-based superalloys. These turbine blades were removed from land-based industrial gas turbines for power generation.
Khier Sabri, Mohamed Ouali Si-Chaib, Mohamed Gaceb   +2 more
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Rejuvenation of retired power cables by heat treatment

IEEE Transactions on Dielectrics and Electrical Insulation, 2019
A possible rejuvenation method of a power cable insulated with cross-linked polyethylene (XLPE) is presented. Samples with the shape of a film with a thickness of about 0.4 mm was peeled from two retired 110 kV cables and their spare cable. First, the peeled samples were annealed at 85, 90, 95 and 100 °C.
Yue Xie, Gang Liu, Yifeng Zhao, Licheng Li, Yoshimichi Ohki   +4 more
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Rejuvenation Heat Treatment of Single Crystal Gas Turbine Blades

Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy, 2017
Thermal degradation of precipitation-hardened nickel based superalloys has been demonstrated to be reversible through full solution rejuvenation heat treatment processing. The specific concern with full solution rejuvenation heat treatment of single crystal alloys is the formation of recrystallized grains on surfaces with residual stress. The threshold
J. Kuipers, K. Wiens, B. Ruggiero
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Rejuvenation of degraded first stage gas turbine nozzle by heat treatment

Journal of Alloys and Compounds, 2010
Abstract The present work was carried out to investigate the effect of heat treatment process on the rejuvenation of degraded first stage gas turbine nozzle microstructure and mechanical properties. In fact, microstructural investigation of the degraded first stage nozzle revealed the presence of continuous film of carbides at the grain boundaries of
Sh. Zangeneh, H. Farhangi, H.R. Lashgari
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Rejuvenation Heat Treatment and Weld Repairability Studies of HAYNES® 230® Alloy

Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, 2000
A series of studies were undertaken to determine the optimum rejuvenation heat treatment of HAYNES 230 alloy and to examine its weld repairability. To simulate service exposure, samples of plate nominally 4.75 mm (0.187 in.) thick were exposed at temperatures of 760°C (1400°F) and 871°C (1600°F) for a period of 1500 hours.
Dwaine L. Klarstrom, Gregory L. Hoback, Venkat R. Ishwar, Javaid I. Qureshi   +3 more
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Rejuvenation heat treatment's influence on the microstructure and properties of superalloys

Materials Science and Technology, 2018
Rejuvenation heat treatment is an important technology to restore damaged microstructure and properties of superalloys. This investigation is conducted to figure out the effect of rejuvenation heat treatment on the superalloys. The microstructure and micro-hardness of K002 and DZ125 superalloys after different heat treatment procedures were evaluated.
Han Yang, Jianglong Zhang, Zheng Zhang
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