scholarly journals Hydrogen-Induced Phase Transformation and Microstructure Evolution for Ti-6Al-4V Parts Produced by Electron Beam Melting

Metals ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 301 ◽  
Author(s):  
Natalia Pushilina ◽  
Alexey Panin ◽  
Maxim Syrtanov ◽  
Egor Kashkarov ◽  
Viktor Kudiiarov ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Electron Beam ◽  
Microstructure Evolution ◽  
Electron Beam Melting

Selective electron beam melting of NiTi: Microstructure, phase transformation and mechanical properties

2019 ◽  
Vol 744 ◽  
pp. 290-298 ◽  
Author(s):  
Quan Zhou ◽  
Muhammad Dilawer Hayat ◽  
Gang Chen ◽  
Song Cai ◽  
Xuanhui Qu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phase Transformation ◽  
Electron Beam ◽  
Electron Beam Melting ◽  
Selective Electron Beam Melting

scholarly journals Geometry-Induced Spatial Variation of Microstructure Evolution During Selective Electron Beam Melting of Rene-N5

2018 ◽  
Vol 49 (10) ◽  
pp. 5080-5096 ◽  
Author(s):  
Curtis Lee Frederick ◽  
Alexander Plotkowski ◽  
Michael M. Kirka ◽  
Michael Haines ◽  
Austin Staub ◽  
...  
Keyword(s):  
Electron Beam ◽  
Spatial Variation ◽  
Microstructure Evolution ◽  
Electron Beam Melting ◽  
Selective Electron Beam Melting

scholarly journals Effect of Phase Transformation on Tensile Behavior of Co–Cr–Mo Alloy Fabricated by Electron-beam Melting

2014 ◽  
Vol 61 (5) ◽  
pp. 234-242 ◽  
Author(s):  
Shi-Hai SUN ◽  
Yuichiro KOIZUMI ◽  
Shingo KUROSU ◽  
Yun-Ping LI ◽  
Akihiko CHIBA
Keyword(s):  
Phase Transformation ◽  
Electron Beam ◽  
Electron Beam Melting ◽  
Tensile Behavior

scholarly journals Precipitation during γ-ε Phase Transformation in Biomedical Co-Cr-Mo Alloys Fabricated by Electron Beam Melting

Metals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 71
Author(s):  
Kosuke Ueki ◽  
Motoka Kasamatsu ◽  
Kyosuke Ueda ◽  
Yuichiro Koizumi ◽  
Daixiu Wei ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Electron Beam ◽  
Phase Stability ◽  
Electron Beam Melting ◽  
Stability Region ◽  
Reverse Transformation ◽  
Metallic Elements ◽  
Σ Phase ◽  
The Matrix ◽  
Ε Phase

We studied the precipitates that were induced during γ-ε phase transformation in biomedical Co-28Cr-6Mo (mass%) alloys that were fabricated by electron beam melting with carbon contents of 0.184 and 0.018 mass%. In the high-C as-built alloy, M23X6-type, π-phase (M3T2X-type), and η-phase (M6X-M12X-type) precipitates were observed (M and T: metallic elements, X: C and/or N). σ-phase (Co(Cr,Mo)), π-phase, and Co3Mo2Si-type precipitates were observed in the low-C as-built alloy. This is the first report that shows the presence and chemical composition of this precipitate, as the Co3Mo2Si-type precipitate has not been detected in biomedical Co-Cr-Mo alloys before. After aging in the ε-phase stability region, the high-C and low-C alloys both contained a single ε-phase matrix, and the amount of π-phase precipitates increased. Conversely, the amount of π-phase precipitates in both alloys decreased when a reverse transformation treatment was applied in the γ-phase stability region after aging. In the low-C alloy, the amount of Co3Mo2Si-type precipitates increased after reverse transformation treatment. These results indicate that the dissolution of π-phase precipitates and the formation of Co3Mo2Si-type precipitates during reverse transformation promote the formation of fine γ-phase grains at the precipitate/ε-phase matrix interface, because the formation and dissolution of these precipitates affect the γ-phase stability of the matrix.

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