Study on synthesis of Zr–Ti alloy powder using molten magnesium

2013 ◽  
Vol 17 (sup2) ◽  
pp. s113-s117 ◽  
Author(s):  
D.-W. Lee ◽  
Y.-K. Baek ◽  
W.-J. Lee ◽  
J.-P. Wang
Keyword(s):  
Alloy Powder ◽  
Ti Alloy ◽  
Molten Magnesium

The Production of Ti Alloy Powder from Chloride Precursors

2010 ◽  
Vol 436 ◽  
pp. 35-39
Author(s):  
James Withers ◽  
John Laughlin ◽  
Yasser Elkadi ◽  
Jay DeSilva ◽  
Raouf O. Loutfy
Keyword(s):  
Powder Metallurgy ◽  
Alloy Powder ◽  
Reactor Wall ◽  
Ti Alloy ◽  
Continuous Processing ◽  
Metallothermic Reduction ◽  
Kroll Process ◽  
Standard Powder ◽  
Molten Magnesium ◽  
Compositional Control

It has long been a goal to produce Ti Alloy powder directly to eliminate the standard processing of melting sponge, alloying, producing a billet/ingot and then reducing to powder by one of several techniques. The batch Kroll process where reaction occurs at the reactor wall interface from TiCl4 vapor and molten magnesium, limits the potential to directly form alloys. Any batch processing has the limitation of alloy compositional control from batch to batch. A unique continuous processing approach permits the gaseous mixing of chloride precursors with metallothermic reduction that directly produces an alloy powder in a size that is useable for standard powder metallurgy. Discussion will include producing Ti-6Al-4V and other alloy powder.

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.

Advanced gas atomization processing for Ti and Ti alloy powder manufacturing

JOM ◽  
2010 ◽  
Vol 62 (5) ◽  
pp. 35-41 ◽  
Author(s):  
A. J. Heidloff ◽  
J. R. Rieken ◽  
I. E. Anderson ◽  
D. Byrd ◽  
J. Sears ◽  
...  
Keyword(s):  
Alloy Powder ◽  
Gas Atomization ◽  
Ti Alloy ◽  
Powder Manufacturing

scholarly journals Review of the Methods for Production of Spherical Ti and Ti Alloy Powder

JOM ◽  
2017 ◽  
Vol 69 (10) ◽  
pp. 1853-1860 ◽  
Author(s):  
Pei Sun ◽  
Zhigang Zak Fang ◽  
Ying Zhang ◽  
Yang Xia
Keyword(s):  
Alloy Powder ◽  
Ti Alloy

scholarly journals Effects of Compaction Velocity on the Sinterability of Al-Fe-Cr-Ti PM Alloy

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3005 ◽  
Author(s):  
Xianjie Yuan ◽  
Xuanhui Qu ◽  
Haiqing Yin ◽  
Zhenwei Yan ◽  
Zhaojun Tan
Keyword(s):  
Mechanical Properties ◽  
High Velocity ◽  
Alloy Powder ◽  
Sintered Density ◽  
Ti Alloy ◽  
Maximum Elongation ◽  
Nitrogen Gas ◽  
High Velocity Compaction ◽  
Ti Powder ◽  
Particle Boundary

In this research, the effects of the compaction velocity on the sinterability of the Al–Fe–Cr–Ti powder metallurgy (PM) alloy by high velocity compaction were investigated. The Al–Fe–Cr–Ti alloy powder was compacted with different velocities by high velocity compaction and then sintered under a flow of high pure (99.999 wt%) nitrogen gas. Results indicated that both the sintered density and mechanical properties increased with increasing compaction velocity. By increasing the compaction velocity, the shrinkage of the sintered samples decreased. A maximum sintered density of 2.85 gcm−3 (relative density is 98%) was obtained when the compaction velocity was 9.4 ms−1. The radial and axial shrinkage were controlled to less than 1% at a compaction velocity of 9.4 ms−1. At a compaction velocity of 9.4 ms−1, sintered compacts with an ultimate tensile strength of 222 MPa and a yield strength of 160 MPa were achieved. The maximum elongation was observed to be 2.6%. The enhanced tensile properties of the Al–Fe–Cr–Ti alloy were mainly due to particle boundary strengthening.

Potassium Bromide as Space Holder for Titanium Foam Preparation

2013 ◽  
Vol 465-466 ◽  
pp. 922-926 ◽  
Author(s):  
Fazimah Mat Noor ◽  
M.I.M. Zain ◽  
K.R. Jamaludin ◽  
R. Hussin ◽  
Z. Kamdi ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Alloy Powder ◽  
Potassium Bromide ◽  
Ti Alloy ◽  
Space Holder ◽  
New Space ◽  
Titanium Foam ◽  
Scanning Electron

Titanium (Ti) alloy foam was prepared by using potassium bromide (KBr) as space holder with percentage between 20 to 40 wt.%. In this work, the potential of KBr as a new space holder was determined. The Ti alloy powder and space holder were first manually mixed before being compacted using hydraulic hand press. The green compacts were then sintered at temperature of 1160°C, 1200°C and 1240°C in a tube furnace. The microstructure of the Ti alloy foams were observed by Scanning Electron Microscope (SEM). It was revealed that the porosity content in the Ti foam was in the range of 16% to 31% and density in the range of 1.5 g/cm3 to 2.6 g/cm3. Moreover, the pore size of the titanium alloy foam is in the range of 187μm to 303μm. Although the sintering temperatures were found incapable of promoting overall densification to the Ti alloy foam, 1200°C was denoted to be the maximal temperature for promoting maximal porosity to the Ti alloy foam. Nonetheless, KBr was proven to be suitable as space holder for Ti foam preparation as referred to its stability and insolubility in the Ti alloy.

scholarly journals Production of Ti-alloy Powder by Rotating Electrode Process

1990 ◽  
Vol 76 (12) ◽  
pp. 2108-2115 ◽  
Author(s):  
Kazuo ISONISHI ◽  
Masaharu TOKIZANE
Keyword(s):  
Alloy Powder ◽  
Electrode Process ◽  
Ti Alloy ◽  
Rotating Electrode
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