Titanium and Titanium Alloy via Sintering of TiH2

2010 ◽  
Vol 436 ◽  
pp. 157-163 ◽  
Author(s):  
Hong Tao Wang ◽  
Michael Lefler ◽  
Z. Zak Fang ◽  
Ting Lei ◽  
Shu Ming Fang ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Alloy Powder ◽  
Low Cost ◽  
Pure Titanium ◽  
Particle Sizes ◽  
New Approach ◽  
Blended Elemental ◽  
Titanium Hydride Powder ◽  
Transus Temperature ◽  
Hydride Powder

Blended elemental (BE) powder metallurgy (PM) is a promising low cost approach for manufacture titanium and titanium alloy components. Conventional BE method relies on sintering of pure titanium metal powder, while the new approach examined in this investigation produces bulk titanium materials by sintering titanium hydride powder. Dehydrogenation and densification of TiH2 powders with different particle sizes and TiH2-6Al-4V alloy powder was studied using thermogravimetric and dilatometric techniques. The results show that the dehydrogenation of TiH2 leads to very rapid shrinkage of α-Ti during sintering. In contrast, densification TiH2-6Al-4V requires dissolution of alloy elements which occurs during sintering above its beta transus temperature.

Aspects about Sintering Behaviour of a Titanium Hydride Powder Based Alloy Used for Automotive Components

2016 ◽  
Vol 823 ◽  
pp. 467-472
Author(s):  
Cristina Ileana Pascu ◽  
Stefan Gheorghe ◽  
Ilie Dumitru ◽  
Claudiu Nicolicescu
Keyword(s):  
Automotive Industry ◽  
Sintering Temperature ◽  
Low Cost ◽  
Test Results ◽  
Automotive Components ◽  
Titanium Hydride Powder ◽  
Powder Particles ◽  
Sintering Behaviour ◽  
High Originality ◽  
Hydride Powder

For this study with high originality, some aspects about the sintering behaviour of Titanium based alloy used for automotive components are presented. This paper presents the experimental results concerning the processing of Ti based alloy by Powder Metallurgy (PM) technology. The initial powder mixture consists in TiH2 micrometric powder particles that have been combined with some metallic powders for improving the final mechanic-chemicals and functional properties for using in the automotive industry. The classical PM route have been applied for obtaining a low-cost Ti- alloy.As a result it was compulsory to study the parameters that influence the densification process and the sintered properties, depending on the sintering temperature. The experimental test results were processed using the STATISTICA program. Therefore the influence of these sintering temperatures on the height and diameter shrinkages, density and hardness for the alloys based on Ti micrometric powders has been studied.

Blended Elemental P/M Synthesis of Titanium Alloys and Titanium Alloy-Based Particulate Composites

2007 ◽  
Vol 534-536 ◽  
pp. 777-780
Author(s):  
Masuo Hagiwara ◽  
Satoshi Emura
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloy ◽  
Titanium Alloys ◽  
Alloy Powder ◽  
High Cycle Fatigue ◽  
Particulate Composites ◽  
Processing Conditions ◽  
Cycle Fatigue ◽  
Blended Elemental ◽  
Optimal Processing

Titanium alloys and Titanium alloy-based particulate composites were synthesized using the blended elemental P/M route. First, processing conditions such as the fabrication of master alloy powder were investigated. Ti-6Al-4V, Ti-5Al-2.5Fe, Ti-6Al-2Sn-4Zr-2Mo, IMI685, IMI829, Timetal 1100 and Timetal 62S, and Ti-6Al-2Sn-4Zr-2Mo/10%TiB and Timetal 62S/10%TiB were then synthesized using the optimal processing conditions obtained. The microstructures and mechanical properties such as tensile strength and high cycle fatigue strength were evaluated.

scholarly journals Development of Low Cost Titanium Alloy Matrix Composite by a New Blended Elemental PM Process.

Materia Japan ◽  
1995 ◽  
Vol 34 (5) ◽  
pp. 611-613 ◽  
Author(s):  
Takashi Saito ◽  
Tadahiko Furuta ◽  
Hiroyuki Takamiya ◽  
Toshiya Yamaguchi
Keyword(s):  
Titanium Alloy ◽  
Matrix Composite ◽  
Low Cost ◽  
Alloy Matrix ◽  
Blended Elemental

Evaluation of Press-and-Sinter Processing Parameters in Titanium Hydride Powder Metallurgy

2016 ◽  
Vol 704 ◽  
pp. 94-103
Author(s):  
S.L.G. Petroni ◽  
E.T. Galvani ◽  
Carlos Alberto Alves Cairo ◽  
C.C. Girotto ◽  
V.A.R. Henriques
Keyword(s):  
Compaction Pressure ◽  
Processing Parameters ◽  
Hydrogen Release ◽  
Particle Sizes ◽  
Positive Effects ◽  
Titanium Hydride Powder ◽  
Titanium Powders ◽  
Compaction Of Powders ◽  
Conventional Press ◽  
Hydride Powder

The use of hydrogenated titanium powders combined with traditional PM techniques may lead to a significant reduction in the manufacturing costs of titanium components. In this work, the advantages and limitations of the use of TiH2 powder consolidated through the conventional press-and-sinter method were investigated. Processing parameters related to the compaction and sintering were studied for a TiH2 powder in the particle sizes <355 μm, <150 μm and <45 μm. Optimized compaction conditions were achieved by using admixed lubricant and compaction pressure of 800 MPa. The mechanisms involved in the compaction of powders were detailed through the fit of compressibility data to a theoretical model originally developed for titanium powders. Densification of samples was favored by the reduction in particle size and increase in sintering temperature up to 1300 °C. The positive effects of hydrogen release during dehydrogenation were verified through the results of sintered densities and the reduction of oxygen levels. Limitations were observed mainly regarding the flowability of powders and the difficulty to achieve full densification.

The Production of Titanium Alloy Powder

2013 ◽  
Vol 551 ◽  
pp. 32-36
Author(s):  
J.C. Withers ◽  
V. Shapovalov ◽  
R. Storm ◽  
R.O. Loutfy
Keyword(s):  
Titanium Alloy ◽  
Alloy Powder ◽  
State Of The Art ◽  
Low Cost ◽  
Manufacturing Processes ◽  
Metallothermic Reduction ◽  
One Step ◽  
Gas Blowing ◽  
The Cost ◽  
Very High

Titanium alloy powder provides manufacturing variants to produce a variety of titanium intermediate materials and final products. However, titanium alloy powder is quite expensive at fifteen to thirty times the cost of sponge thus limiting the utilization of titanium powder to produce titanium products. The standard state-of-the-art processing to produce alloy powder results in very high cost of alloy powder. Three new processes have been demonstrated to produce titanium alloy powder at a cost of only 2-5 times the typical cost of sponge. The processes are (1) one step melting of sponge/alloying and gas blowing alloy powder, (2) metallothermic reduction of mixed chloride precursors to produce alloy powder and (3) electrolytic reduction in a fused salt of mixed alloying (TiCl4-AlCl3-VCl4) chlorides. These processes have beeSubscript textn demonstrated to produce low cost titanium alloy powder which can serve as feeds for the variant manufacturing processes to produce low cost titanium products.

Study about the Influence of Two-Steps Sintering (TTS) Route for an Alloy Based on Titanium

2018 ◽  
Vol 880 ◽  
pp. 256-261
Author(s):  
Cristina Ileana Pascu ◽  
Stefan Gheorghe ◽  
Daniela Florentina Tărâţă ◽  
Claudiu Nicolicescu ◽  
Cosmin Mihai Miriţoiu
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Titanium Hydride ◽  
Low Cost ◽  
Ti Alloy ◽  
Metallic Powders ◽  
Titanium Hydride Powder ◽  
Hydride Powder

This paper describes the influence of two-steps sintering regime temperatures concerning the final properties of titanium hydride based alloy obtaining by Two-Steps Sintering (TTS) route, which is a method that is part of the Powder Metallurgy (PM) technology. The initial titanium hydride powder has been mixed with some metallic powders as: Alumix, Mn, Zr, Sn and graphite was added in different proportions for improving the final mechanical properties. The Two-Steps Sintering (TTS) route have been applied for obtaining a low-cost Ti- alloy. The effect of the sintering regime temperatures on the height and diameter shrinkages and density for these alloys based on titanium hydride powder was studied

scholarly journals Recycling of titanium alloy swarf directly into wire using the ConformTM continuous extrusion process

2020 ◽  
Vol 321 ◽  
pp. 03028
Author(s):  
Sarah A. Smythe ◽  
Ben Thomas ◽  
Daniel Suarez-Fernandez ◽  
Xin Fang ◽  
Benoit Marguet ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Low Cost ◽  
Waste Product ◽  
Light And Electron Microscopy ◽  
Pure Titanium ◽  
Extrusion Process ◽  
Additive Manufacture ◽  
Commercially Pure Titanium ◽  
Round Wire ◽  
Continuous Extrusion

ConformTM is an extrusion process, which has been in use since the 1970s. Although it is primarily used with aluminium or copper rod/powder feedstocks, work at the Univ. Sheffield over the last decade has involved the use of titanium feedstocks for various applications. This paper expands on this knowledge by utilising low cost, aerospace titanium alloy swarf, which is the largest waste product from the manufacturing of aerospace titanium components. Swarf is fed into a ConformTM extrusion machine at room temperature and is fully consolidated into round wire/rod profiles in one, solid-state step, using modified tooling for titanium. Such wire can be used for additive manufacture or welding wire. To date there has been numerous successful trials in this challenging process, including the production of both 10 mm commercially pure titanium rod (from powder) and, more importantly, the production of 5 mm diameter Ti-6Al-4V wire from swarf. The material produced has since been characterised using light and electron microscopy and mechanical properties determined using tensile testing and microhardness indenting.

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