Results 201 to 210 of about 3,351 (224)
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Microstructural Rejuvenation Through Non-conventional Heat Treatments of an Inconel 939 Superalloy
MRS Proceedings, 2012ABSTRACTThe microstructural rejuvenation through non-conventional heat treatments (NCHT) of a conventional cast superalloy Inconel 939 was investigated. The primary and secondary main constituents of the NCHT microstructures were characterized through its morphology and composition applying conventional microscopy and analytical scanning electron ...
M. A. González +3 more
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Transactions of Nonferrous Metals Society of ChinaJournal of Alloys and Compounds, 2012
Abstract IN738LC is one of the superior nickel base superalloys utilized at high temperatures in aggressive environments. However, experiencing high temperatures and stresses during service causes microstructure deterioration and degradation of mechanical properties in this alloy.
Sayyed Shahabeddin Hosseini +2 more
exaly +2 more sources
Abstract IN738LC is one of the superior nickel base superalloys utilized at high temperatures in aggressive environments. However, experiencing high temperatures and stresses during service causes microstructure deterioration and degradation of mechanical properties in this alloy.
Sayyed Shahabeddin Hosseini +2 more
exaly +2 more sources
Failure analysis and rejuvenation heat treatment of a martensitic stainless steel gate valve stem
Engineering Failure AnalysisMajid Asnavandi, Sean Li
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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, 2000A 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 +3 more
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Rejuvenation of Fracture Properties of Irradiated Zr-2.5 Nb by Heat Treatment
1992Neutron irradiation can reduce the flaw tolerance of cold-worked Zr-2.5 Nb. One possible way to retrieve the good fracture properties is to remove the irradiation damage by heat treatment. The results of experiments have shown that a short heat treatment can be effective; for example, 10 min at 550°C reduces the velocity of delayed hydride cracking by ...
CE Coleman +5 more
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Materials Science and Technology, 2013
The gamma prime ( γ′) distribution in the Ni based superalloy, CMSX-4, has been examined in detail using a field emission gun scanning electron microscope and a transmission electron microscope after high temperature degradation and the subsequent application of a number of rejuvenation heat treatments.
M A E Jepson, R C Thomson
exaly +2 more sources
The gamma prime ( γ′) distribution in the Ni based superalloy, CMSX-4, has been examined in detail using a field emission gun scanning electron microscope and a transmission electron microscope after high temperature degradation and the subsequent application of a number of rejuvenation heat treatments.
M A E Jepson, R C Thomson
exaly +2 more sources
Materials Science Forum, 2017
Udimet 520 is a low precipitation strengthened nickel-based superalloy, which was designed and developed to be gas turbine blades at elevated temperatures. However, after long-term service under high stresses and temperatures, the microstructure of the turbine blades could be continually degraded.
Kritsayanee Saelor, Panyawat Wangyao
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Udimet 520 is a low precipitation strengthened nickel-based superalloy, which was designed and developed to be gas turbine blades at elevated temperatures. However, after long-term service under high stresses and temperatures, the microstructure of the turbine blades could be continually degraded.
Kritsayanee Saelor, Panyawat Wangyao
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Materials at High Temperatures, 2001
AbstractSheet materials for hot gas path components in modern land based gas turbines demand high strength over the temperature range 650–950°C and freedom from serious in-service embrittlement. This is particularly critical where a gas turbine is subject to cycling since thermal stresses can lead to the cracking of such components.
Ian J. Storey +4 more
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AbstractSheet materials for hot gas path components in modern land based gas turbines demand high strength over the temperature range 650–950°C and freedom from serious in-service embrittlement. This is particularly critical where a gas turbine is subject to cycling since thermal stresses can lead to the cracking of such components.
Ian J. Storey +4 more
openaire +1 more source
Effect of heat treatment paths on the aging and rejuvenation of metallic glasses
Physical Review Materials, 2023Suyue Yuan +5 more
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