Influence of heat treatment on the mechanical and electrical characteristics of Ni0.5Ti0.5 alloy prepared by electron-beam melting

2013 ◽  
Vol 419 ◽  
pp. 90-94 ◽  
Author(s):  
A.H. Ammar ◽  
M. Al-Buhairi ◽  
A.A.M. Farag ◽  
N.M.M. Al-Wajeeh
Keyword(s):  
Heat Treatment ◽  
Electron Beam ◽  
Electron Beam Melting ◽  
Electrical Characteristics

scholarly journals Microstructural and Mechanical Evaluation of a Cr-Mo-V Cold-Work Tool Steel Produced via Electron Beam Melting (EBM)

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2963
Author(s):  
Carlos Alberto Botero ◽  
Aydın Şelte ◽  
Markus Ramsperger ◽  
Giulio Maistro ◽  
Andrey Koptyug ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Electron Beam ◽  
Tool Steel ◽  
Electron Beam Melting ◽  
Retained Austenite ◽  
Cold Work ◽  
Hot Isostatic Pressing ◽  
Wear Properties ◽  
Treatment Procedures ◽  
Cold Work Tool Steel

In this work, a highly alloyed cold work tool steel, Uddeholm Vanadis 4 Extra, was manufactured via the electron beam melting (EBM) technique. The corresponding material microstructure and carbide precipitation behavior as well as the microstructural changes after heat treatment were characterized, and key mechanical properties were investigated. In the as-built condition, the microstructure consists of a discontinuous network of very fine primary Mo- and V-rich carbides dispersed in an auto-tempered martensite matrix together with ≈15% of retained austenite. Adjusted heat treatment procedures allowed optimizing the microstructure by the elimination of Mo-rich carbides and the precipitation of fine and different sized V-rich carbides, along with a decrease in the retained austenite content below 2%. Hardness response, compressive strength, and abrasive wear properties of the EBM-manufactured material are similar or superior to its as-HIP forged counterparts manufactured using traditional powder metallurgy route. In the material as built by EBM, an impact toughness of 16–17 J was achieved. Hot isostatic pressing (HIP) was applied in order to further increase ductility and to investigate its impact upon the microstructure and properties of the material. After HIPing with optimized protocols, the ductility increased over 20 J.

Effects of Heat Treatment on Unique Layered Microstructure and Tensile Properties of TiAl Fabricated by Electron Beam Melting

2018 ◽  
Vol 941 ◽  
pp. 1366-1371
Author(s):  
Masahiro Sakata ◽  
Jong Yeong Oh ◽  
Ken Cho ◽  
Hiroyuki Y. Yasuda ◽  
Mitsuharu Todai ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Electron Beam ◽  
Tensile Properties ◽  
Heat Treatment Temperature ◽  
Electron Beam Melting ◽  
Room Temperature ◽  
High Strength ◽  
Treatment Temperature ◽  
Heat Treated ◽  
High Elongation

In the present study, effects of heat treatment on microstructures and tensile properties of the cylindrical bars of Ti-48Al-2Cr-2Nb (at.%) alloy with unique layered microstructure consisting of equiaxed γ grains region (γ band) and duplex-like region fabricated by electron beam melting (EBM) were investigated. We found that it is possible to control width of the γ bands (Wγ) by heat treatments at 1100°C and 1190°C. The Wγ increases with decreasing heat treatment temperature. The bars heat-treated at 1190°C exhibit high elongation of 2.9% at room temperature (RT) with maintaining high strength. The RT elongation increases with increasing the Wγ because of increasing deformable regions. In contrast, the RT elongation of the bars decreases with increasing the Wγ when Wγ is very large. This is because the large γ band leads intergranular fracture. These results indicate that there is appropriate width for the γ band to obtain excellent tensile properties at RT.

scholarly journals Fatigue improvement of electron beam melting-fabricated biomedical Co–Cr–Mo alloy by accessible heat treatment

2017 ◽  
Vol 6 (1) ◽  
pp. 93-99 ◽  
Author(s):  
Daixiu Wei ◽  
Yuichiro Koizumi ◽  
Taiyo Takashima ◽  
Makoto Nagasako ◽  
Akihiko Chiba
Keyword(s):  
Heat Treatment ◽  
Electron Beam ◽  
Electron Beam Melting ◽  
Fatigue Improvement

Solution Heat Treatment of the Single Crystal Nickel-Base Superalloy CMSX-4 Fabricated by Selective Electron Beam Melting

2015 ◽  
Vol 17 (10) ◽  
pp. 1486-1493 ◽  
Author(s):  
Markus Ramsperger ◽  
Laís Mújica Roncery ◽  
Inmaculada Lopez-Galilea ◽  
Robert F. Singer ◽  
Werner Theisen ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Electron Beam ◽  
Single Crystal ◽  
Electron Beam Melting ◽  
Solution Heat Treatment ◽  
Nickel Base Superalloy ◽  
Selective Electron Beam Melting ◽  
Nickel Base ◽  
Base Superalloy
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