The Experts below are selected from a list of 34398 Experts worldwide ranked by ideXlab platform
Shuichi Miyazaki - One of the best experts on this subject based on the ideXlab platform.
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Precipitation Behavior of Thermo-Mechanically Treated Ti50Ni20Au20Cu10 High-Temperature Shape-Memory Alloy
Shape Memory and Superelasticity, 2015Co-Authors: Saif Haider Kayani, Hee Young Kim, M. Imran Khan, Fazal Ahmad Khalid, Shuichi MiyazakiAbstract:In the present work, Precipitation Behavior of TiNiAuCu-based high-temperature shape-memory alloys is studied. Two alloys with compositions Ti50Ni30Au20 and Ti50Ni20Au20Cu10 were prepared. After 30 % cold rolling, both alloys were then annealed at different temperatures. Formation of Cu-rich TiAuCu and Ti-rich Ti3Au precipitates was observed in Ti50Ni20Au20Cu10 alloy when annealed at different temperatures after cold deformation. It was noticed that prior cold deformation has significant effect on the Precipitation Behavior. A similar kind of Precipitation Behavior has been previously reported in TiNiPdCu alloys. Both TiAuCu and Ti3Au type precipitates were found to be deficient in Ni content which causes an increase in Ni content of the matrix and a small decrease in transformation temperatures of the Ti50Ni20Au20Cu10 alloy.
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Effect of cold rolling ratio on the nanoscale Precipitation Behavior of TiNiPdCu based high temperature shape memory alloys
Journal of Alloys and Compounds, 2014Co-Authors: M. Imran Khan, Hee Young Kim, F. Ahmad Khalid, Shuichi MiyazakiAbstract:The effect of cold rolling ratio on Precipitation Behavior of an annealed Ti50Ni15Pd25Cu10 alloy was investigated. The change in the cold rolling ratio noticeably affected the Precipitation Behavior mainly due to the difference in the density of heterogeneous nucleation sites provided by the deformation induced defects. Higher cold rolling ratios caused an increase in the density of precipitates which subsequently caused a decrease in the martensitic transformation temperatures and shape recovery strain. It was confirmed that the prior cold deformation ratio is an important parameter to control the nanoscale Precipitation Behavior of Ti2Pd and TiPdCu type precipitates, both in terms of their overall density and distribution.
D Bhattacharjee - One of the best experts on this subject based on the ideXlab platform.
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Precipitation Behavior and texture formation at different stages of processing in an interstitial free high strength steel
Scripta Materialia, 2008Co-Authors: Pampa Ghosh, Chiradeep Ghosh, R K Ray, D BhattacharjeeAbstract:The Precipitation Behavior and texture formation during hot rolling, cold rolling and annealing (at 700 °C and 800 °C) have been studied in a Ti-containing interstitial free high strength (IFHS) steel. The presence of FeTiP in the 700 °C annealed steel and its absence in the 800 °C annealed material are considered to be responsible for the poor {1 1 1} texture and low r ¯ in the former and strong {1 1 1} texture and high r ¯ in the latter.
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comparative study of Precipitation Behavior and texture formation in continuously annealed ti and ti nb added interstitial free high strength steels
Scripta Materialia, 2008Co-Authors: Pampa Ghosh, Chiradeep Ghosh, R K Ray, D BhattacharjeeAbstract:Two interstitial-free high-strength (IFHS) steels processed by continuous annealing, with and without Nb addition, have been studied. No major differences in Precipitation Behavior or texture formation in the two steels were observed. Nb addition does not improve the formability as such, but it appears to coarsen the carbide precipitates and reduces the volume fraction of the {1 1 1}〈1 1 0〉 texture component in the γ fiber.
R Martinezsanchez - One of the best experts on this subject based on the ideXlab platform.
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influence of plastic deformation and cu mg ratio on the strengthening mechanisms and Precipitation Behavior of aa2024 aluminum alloys
Journal of materials research and technology, 2019Co-Authors: J L Garciahernandez, C G Garayreyes, I K Gomezbarraza, M A Ruizesparzarodriguez, E J Gutierrezcastaneda, I Estradaguel, M C Maldonadoorozco, R MartinezsanchezAbstract:Abstract The strengthening mechanisms and Precipitation Behavior in AA2024 alloys with different Cu/Mg ratios (3.18 and 2.48) and different levels of plastic deformation (5 and 15%) were studied by X-ray diffraction, transmission electron microscopy and Vickers microhardness measurements. Results demonstrate that hardening depends significantly on the interaction of different strengthening mechanisms such as solid-solution, strain hardening and Precipitation. Hardness is mostly influenced by Precipitation, which in turn is modified by plastic deformation and the Cu/Mg ratio. Modification of Cu and Mg content as well as plastic deformation affect the Precipitation Behavior of the Al2CuMg (S) phase, since these lead to significant changes in size and numeric density of the S precipitates. A higher number density and a smaller size of S precipitates are obtained in the alloy with lower Cu/Mg ratio and 15% of thickness reduction.
E J Gutierrezcastaneda - One of the best experts on this subject based on the ideXlab platform.
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influence of plastic deformation and cu mg ratio on the strengthening mechanisms and Precipitation Behavior of aa2024 aluminum alloys
Journal of materials research and technology, 2019Co-Authors: J L Garciahernandez, C G Garayreyes, I K Gomezbarraza, M A Ruizesparzarodriguez, E J Gutierrezcastaneda, I Estradaguel, M C Maldonadoorozco, R MartinezsanchezAbstract:Abstract The strengthening mechanisms and Precipitation Behavior in AA2024 alloys with different Cu/Mg ratios (3.18 and 2.48) and different levels of plastic deformation (5 and 15%) were studied by X-ray diffraction, transmission electron microscopy and Vickers microhardness measurements. Results demonstrate that hardening depends significantly on the interaction of different strengthening mechanisms such as solid-solution, strain hardening and Precipitation. Hardness is mostly influenced by Precipitation, which in turn is modified by plastic deformation and the Cu/Mg ratio. Modification of Cu and Mg content as well as plastic deformation affect the Precipitation Behavior of the Al2CuMg (S) phase, since these lead to significant changes in size and numeric density of the S precipitates. A higher number density and a smaller size of S precipitates are obtained in the alloy with lower Cu/Mg ratio and 15% of thickness reduction.
M. Imran Khan - One of the best experts on this subject based on the ideXlab platform.
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Precipitation Behavior of Thermo-Mechanically Treated Ti50Ni20Au20Cu10 High-Temperature Shape-Memory Alloy
Shape Memory and Superelasticity, 2015Co-Authors: Saif Haider Kayani, Hee Young Kim, M. Imran Khan, Fazal Ahmad Khalid, Shuichi MiyazakiAbstract:In the present work, Precipitation Behavior of TiNiAuCu-based high-temperature shape-memory alloys is studied. Two alloys with compositions Ti50Ni30Au20 and Ti50Ni20Au20Cu10 were prepared. After 30 % cold rolling, both alloys were then annealed at different temperatures. Formation of Cu-rich TiAuCu and Ti-rich Ti3Au precipitates was observed in Ti50Ni20Au20Cu10 alloy when annealed at different temperatures after cold deformation. It was noticed that prior cold deformation has significant effect on the Precipitation Behavior. A similar kind of Precipitation Behavior has been previously reported in TiNiPdCu alloys. Both TiAuCu and Ti3Au type precipitates were found to be deficient in Ni content which causes an increase in Ni content of the matrix and a small decrease in transformation temperatures of the Ti50Ni20Au20Cu10 alloy.
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Effect of cold rolling ratio on the nanoscale Precipitation Behavior of TiNiPdCu based high temperature shape memory alloys
Journal of Alloys and Compounds, 2014Co-Authors: M. Imran Khan, Hee Young Kim, F. Ahmad Khalid, Shuichi MiyazakiAbstract:The effect of cold rolling ratio on Precipitation Behavior of an annealed Ti50Ni15Pd25Cu10 alloy was investigated. The change in the cold rolling ratio noticeably affected the Precipitation Behavior mainly due to the difference in the density of heterogeneous nucleation sites provided by the deformation induced defects. Higher cold rolling ratios caused an increase in the density of precipitates which subsequently caused a decrease in the martensitic transformation temperatures and shape recovery strain. It was confirmed that the prior cold deformation ratio is an important parameter to control the nanoscale Precipitation Behavior of Ti2Pd and TiPdCu type precipitates, both in terms of their overall density and distribution.
