Preparation of TiAl Alloy Powder by Reactive Synthesis in Molten KCl-LiCl Salt

JOM ◽  
2018 ◽  
Vol 70 (10) ◽  
pp. 2230-2236 ◽  
Author(s):  
Cheng-cheng Liu ◽  
Xin Lu ◽  
Fei Yang ◽  
Jian-bo Tong ◽  
Wei Xu ◽  
...  
Keyword(s):  
Alloy Powder ◽  
Tial Alloy ◽  
Reactive Synthesis

Preparation of TiAl alloy powder by high-energy ball milling and diffusion reaction at low temperature

Rare Metals ◽  
2015 ◽  
Vol 37 (1) ◽  
pp. 21-25 ◽  
Author(s):  
Hui-Ping Shao ◽  
Zhi Wang ◽  
Tao Lin ◽  
Qing Ye ◽  
Zhi-Meng Guo
Keyword(s):  
Low Temperature ◽  
Ball Milling ◽  
Alloy Powder ◽  
Tial Alloy ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Diffusion Reaction ◽  
Energy Ball ◽  
And Diffusion

Microstructures and mechanical properties of TiAl alloy fabricated by spark plasma sintering

2019 ◽  
Vol 34 (01n03) ◽  
pp. 2040036
Author(s):  
Yongjun Su ◽  
Yunfeng Lin ◽  
Na Zhang ◽  
Deliang Zhang
Keyword(s):  
Mechanical Properties ◽  
Spark Plasma Sintering ◽  
Alloy Powder ◽  
Room Temperature ◽  
Tial Alloy ◽  
Sintering Temperature ◽  
Tensile Tests ◽  
Alloyed Powder ◽  
Plasma Sintering ◽  
Spark Plasma

This work deals with the consolidation of a TiAl alloy powder by spark plasma sintering (SPS). Pre-alloyed powder with a composition of Ti–48Al–2Cr–2Nb (at.%) was consolidated in a SPS furnace at temperatures between 1200[Formula: see text]C and 1325[Formula: see text]C and with a pressure of 50 MPa. The microstructures obtained after SPS depend on the sintering temperature. Tensile tests at room temperature were performed. The alloy SPSed at temperatures not less than 1250[Formula: see text]C exhibits good properties at room temperature.

Gas atomization of γ‐TiAl Alloy Powder for Additive Manufacturing

2019 ◽  
Vol 22 (1) ◽  
pp. 1900594
Author(s):  
Arturo Martín ◽  
Carmen María Cepeda-Jiménez ◽  
María Teresa Pérez-Prado
Keyword(s):  
Additive Manufacturing ◽  
Alloy Powder ◽  
Tial Alloy ◽  
Gas Atomization

Metal Injection Moulding Using Intermetallic γ-TiAl Alloy Powder

2001 ◽  
Vol 3 (6) ◽  
pp. 387-390 ◽  
Author(s):  
R. Gerling ◽  
F.-P. Schimansky ◽  
G. Wegmann
Keyword(s):  
Injection Moulding ◽  
Alloy Powder ◽  
Tial Alloy ◽  
Metal Injection Moulding

Near-net shape processing of spherical high Nb-TiAl alloy powder by gelcasting

2013 ◽  
Vol 20 (11) ◽  
pp. 1076-1080 ◽  
Author(s):  
Hui-ping Shao ◽  
Xiao-ting Liu ◽  
Ye Ji ◽  
Zhi-meng Guo
Keyword(s):  
Alloy Powder ◽  
Tial Alloy ◽  
Shape Processing ◽  
Near Net Shape

Enhanced Sintering of Pre-Alloyed Binary TiAl Powder by a Small Addition of Iron

2012 ◽  
Vol 520 ◽  
pp. 89-94 ◽  
Author(s):  
Y. Xia ◽  
Graham B. Schaffer ◽  
Ma Qian
Keyword(s):  
Alloy Powder ◽  
Tial Alloy ◽  
Xrd Analysis ◽  
Small Addition ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Sintering Aid ◽  
Fe Content ◽  
Sintering Behaviour ◽  
Eds Microanalysis

TiAl alloy powder is difficult to sinter unless assisted with pressure and/or pulsed current. This paper investigates the effect of a small addition of iron on the sintering behaviour of γ-TiAl alloy powder at 1350 °C in vacuum. Thermodynamic calculations using Thermo-Calc and the Ti-alloy database TTTI3 predict that iron is a potential sintering aid for TiAl powder. The relative sintered density (RSD) increased with increasing Fe content and peaked at an addition of 2at.%Fe, at which the RSD increased from ~ 60% theoretical density (TD) without iron to ~ 97%TD. The enhanced densification is attributed to liquid formation induced by iron based on both thermodynamic predictions and differential scanning calorimetry (DSC) analysis. The as-sintered microstructures and phase constituents were analysed by scanning electron microscopy (SEM) equipped with an energy dispersive spectroscopy (EDS) microanalysis system and X-ray diffraction (XRD) analysis.

Shock consolidation of Ni-Ti alloy powder

1986 ◽  
Vol 44 ◽  
pp. 430-431
Author(s):  
Naresh N. Thadhani ◽  
Thad Vreeland ◽  
Thomas J. Ahrens
Keyword(s):  
Alloy Powder ◽  
Amorphous Material ◽  
Ti Alloy ◽  
Two Phase ◽  
Near Surface ◽  
Optical Micrograph ◽  
Shock Compaction ◽  
Powder Particles ◽  
Ti Powder ◽  
Rapidly Solidified

A spherically-shaped, microcrystalline Ni-Ti alloy powder having fairly nonhomogeneous particle size distribution and chemical composition was consolidated with shock input energy of 316 kJ/kg. In the process of consolidation, shock energy is preferentially input at particle surfaces, resulting in melting of near-surface material and interparticle welding. The Ni-Ti powder particles were 2-60 μm in diameter (Fig. 1). About 30-40% of the powder particles were Ni-65wt% and balance were Ni-45wt%Ti (estimated by EMPA).Upon shock compaction, the two phase Ni-Ti powder particles were bonded together by the interparticle melt which rapidly solidified, usually to amorphous material. Fig. 2 is an optical micrograph (in plane of shock) of the consolidated Ni-Ti alloy powder, showing the particles with different etching contrast.

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