microstructural evolution and thermal stability after

Thermal and microstructural evolution under ageing of

2017-7-31B Thermal stability abstract The thermal and microstructural evolution under ageing at temperatures up to 770 K has been studied on several polycrystalline high-temperature Ni–Mn–Ga shape memory alloys all of them with an excess of Ni and higher

Microstructural evolution and thermal stability

High-pressure inert gas atomization (HPGA) has been used to produce rapidly solidified Cu-21Nb-2Mo (weight percent) powders with a range of particle sizes and microstructures The associated microstructures depend on particle size Specifically fine-scale particles (s15 μm#) are characterized by a predominance of multiphase spheroids and a small population of Nb-based

Microstructural evolution strengthening and thermal

DOI: 10 1016/j actamat 2016 02 050 Corpus ID: 14871406 Microstructural evolution strengthening and thermal stability of an ultrafine-grained Al–Cu–Mg alloy article{Chen2016MicrostructuralES title={Microstructural evolution strengthening and thermal stability of an ultrafine-grained Al–Cu–Mg alloy} author={Ying Chen and Nong Nong Gao and Gang Sha and Simon Ringer and Marco J

Materials

The volume fraction of hard reinforcements (Mo6Ni6C γ-Ni31Si12 and β1-Ni3Si) reached up to 85% in the coating High-temperature microstructural stability of the coating was investigated by aging the coating at 1073 K for 240–480 h to reveal its microstructural evolution

Effect of Electropulsing on Surface Mechanical

In the current study the surface mechanical behavior and microstructural evolution of Inconel 718 superalloy processed by the ultrasonic surface rolling process (USRP) and electropulsing-assisted ultrasonic surface rolling process (EP-USRP) were carefully analyzed The experimental results suggested that after EP-USRP with a frequency of 400 Hz significant enhancements in Vickers

A study of the microstructural stability and defect

The present work investigates the thermal stability of the microstructure and the evolution of defects in a 0 3% Y 2 O 3 dispersed Eurofer steel Samples were annealed for 1 h under vacuum from 600 K to 1600 K followed by cooling inside the furnace

Microstructural evolution and thermal stability of

The thermal stability of the microstructure was also studied Ternary eutectic microstructures were heat treated at various temperatures for time intervals up to 100 hours The coupled growth microstructures were found to coarsen at temperature above 400C which was associated with a loss in hardness Microstructural evolution and thermal

J Mater Sci Technol

2020-4-30Microstructural Evolution and Thermal Stability of Ultra-fine Grained Al-4Mg Alloy by Equal Channel Angular Pressing Hongbin GENG Subbong KANG Shiyu HE School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 China Korea Institute of Machinery and Materials 66 Sangnam Dong Changwon Kyungnam 641-010 South

High Temperature Microstructural Degradation of Haynes

2018-7-19microstructural changes and phase precipitation reactions occurring as a result of service exposure based upon the use of laboratory controlled thermally aged and creep tested samples Haynes Alloy 230 was specifically designed to have excellent long-term thermal stability and resistance to the precipitation of damaging phases

Microstructural Evaluation of the Thermal Stability of

2018-6-29Microstructural Evaluation of the Thermal Stability of Inconel 740H Nickel-Based Superalloy R Jackson Spurling1 Peter F Tortorelli 2 and Kinga A Unocic2 1 Materials Science and Engineering Dept University of Tennessee Knoxville TN USA

Thermal stability and microstructural evolution in

Thermal stability and microstructural evolution in ultrafine-grained nickel after equal-channel angular pressing (ECAP) Nurislamova G V Valiev R Z et al Thermal stability and microstructural evolution in ultrafine-grained nickel after equal-channel angular pressing (ECAP) Metall and Mat Trans A 33 1865–1868 (2002) https://doi

Microstructural Evolution and Thermal Stability

2019-9-22Rogie I Rodriguez Dimeji Ibitayo and Pedro Quintero (2012) Microstructural Evolution and Thermal Stability Characterization of a High Temperature Die Attach Lead-Free System Additional Conferences (Device Packaging HiTEC HiTEN CICMT): January 2012 Vol 2012 No HITEC pp 1

Materials

The volume fraction of hard reinforcements (Mo6Ni6C γ-Ni31Si12 and β1-Ni3Si) reached up to 85% in the coating High-temperature microstructural stability of the coating was investigated by aging the coating at 1073 K for 240–480 h to reveal its microstructural evolution

Mechanical properties microstructure and thermal

2019-2-18Therefore heat treatments after deformation are usually required to obtain a good balance of properties by decreasing strength and increasing ductility Based on these considerations SPD of HEAs demands not only microstructural examination of grain refinement during processing but also in-depth investigation of thermal stability in terms of

'Microstructural evolution and thermal stability of

2018-11-17Microstructural evolution and thermal stability of nitride-based metal/semiconductor superlattices for thermoelectric and hard-coating applications Authors: Magnus Garbrecht (1) Jeremy L Schroeder (1) Lars Hultman (1) Jens Birch (1) Timothy D Sands (2) Bivas Saha (3) 1 Thin Film Physics Division Linkping University Linkping SWEDEN 2

Microstructural evolution and thermal stability of

The thermal stability of the microstructure was also studied Ternary eutectic microstructures were heat treated at various temperatures for time intervals up to 100 hours The coupled growth microstructures were found to coarsen at temperature above 400C which was associated with a loss in hardness Microstructural evolution and thermal

Microstructural characterisation and thermal stability of

2012-10-73 2 Microstructural evolution during heat treatment Heat treatment has been carried out to investigate the thermal stability of the RDC AJ62 alloy and its microstruc-tural evolution Figure 3 shows the microstructure of the alloy after treatment at 450C for 1 and 12 hours The only microstructural modification is breaking-up spheroidisation

Examining the microhardness evolution and thermal

Therefore the present study was initiated to evaluate the thermal stability of an Al–3Mg–0 2Sc alloy subjected to 10 turns of HPT processing at 450 K by examining the mechanical properties and microstructural evolution in this UFG material after systematic annealing for 1 h at temperatures ranging from 423 to 773 K

Microstructural evolution microhardness and thermal

2000-10-15The thermal stability of UFG copper was studied using DSC TEM and microhardness measurement with a direct correlation of the results obtained by these three techniques Copper was chosen because it has been processed into UFG state by various techniques including ECAP [11] [33] [34] and as a result a wealth of reference experimental

Microstructural evolution mechanical property and

The microstructural evolution mechanical property and thermal stability of the HPT-processed alloy were studied The results demonstrate that the precipitates appeared in the as-received alloy were dissolved into the matrix after HPT processing and the grains were significantly refined accompanied by the modification of dislocations

MICROSTRUCTURAL EVOLUTION OF HIGH DENSITY W

2019-2-24After testing as produced and tested specimens were cross sectioned for microstructural examination using optical microscopy scanning electron microscopy and microhardness in order to understand the stability of the bulk cermet microstructure under the different conditions While the specimens retained structural integrity

Microstructural evolution and thermal stability of

The thermal stability of the microstructure was also studied Ternary eutectic microstructures were heat treated at various temperatures for time intervals up to 100 hours The coupled growth microstructures were found to coarsen at temperature above 400C which was associated with a loss in hardness Microstructural evolution and thermal

Microstructual evolution and stability of second

2016-8-31After exposure at 980 C for 1000 h no TCP phase was observed in both dendritic and interdendritic regions indicating a good microstructual stability of the DD5 alloy at 980 C Key words: single crystal superalloy DD5 alloy microstructural evolution heat treatment thermal exposure 1

Microstructural evolution and thermal stability after

article{osti_22689715 title = {Microstructural evolution and thermal stability after aging of a cobalt-containing martensitic bearing steel} author = {Li Shaohong and Zhao Kunyu and Wang Kang and Yang Maosheng} abstractNote = {The microstructural changes and thermal stability of a cobalt-containing martensitic heat resistance bearing steel have been investigated in this paper

Effects of heat treatment on the microstructural evolution

2020-5-31Effects of heat treatment on the microstructural evolution and creep resistance of Elektron21 alloy and its nanocomposite Materials Science and Engineering: A ( IF 4 652) Pub Date : 2020-05-31 DOI: 10 1016/j msea 2020 139669