GNEE hot-selling products
High Strength Gr5 Titanium Pipe
Ti-6A1-4V GR5 Titanium Alloy Plate
Wear Resistance Grade 12 Titanium Plate
Thin Wall Titanium Foil Strips
Gr1 Gr2 Gr5 Titanium Alloy Foil
TA18 titanium alloy (Ti-3Al-2.5V), as a high-performance α-β titanium alloy, demonstrates broad application prospects in aerospace, marine exploration, and high-end medical devices due to its high strength, low density, and exceptional corrosion resistance. This paper aims to explore the influence of heat treatment processes on the microstructure and yield strength of TA18 titanium alloy, providing theoretical and experimental support for its optimized application.
Heat Treatment Processes of TA18 Titanium Alloy
Heat treatment, as a key method for regulating the properties of TA18 titanium alloy, effectively improves its microstructure and mechanical properties by precisely controlling temperature, time, and cooling methods.
Annealing Treatment
Purpose: To eliminate residual processing stress and enhance the material's plasticity and toughness.
Process Parameters: Temperature 700°C-800°C, holding time 1-2 hours, furnace cooling.
Effects: Refines grain structure, improves material uniformity, reduces yield strength to approximately 450 MPa, and increases elongation to over 25%.
Solution Treatment
Purpose: To promote uniform distribution of α and β phases, enhancing material strength and hardness.
Process Parameters: Temperature 900°C-950°C, holding time 30-60 minutes, rapid water cooling or air cooling.
Effects: Increases yield strength to over 800 MPa, tensile strength to 950 MPa, but slightly reduces plasticity.
Aging Treatment
Purpose: To further strengthen the material after solution treatment by precipitating fine metastable phases to improve mechanical properties.
Process Parameters: Temperature 500°C-600°C, holding time 4-8 hours, furnace cooling.
Effects: Achieves yield strength of over 900 MPa, tensile strength of approximately 1000 MPa, but further reduces plasticity to about 10%.
Analysis of Yield Strength of TA18 Titanium Alloy
Yield strength, a critical indicator for evaluating a material's plastic deformation capability, is significantly influenced by heat treatment processes.
Untreated State: Yield strength approximately 620 MPa, tensile strength about 780 MPa, elongation about 20%, exhibiting good plasticity but relatively low strength.
Annealed State: Annealing reduces yield strength to approximately 450 MPa, accompanied by a significant increase in elongation, enhancing the material's plasticity and toughness.
Solution-Treated State: Solution treatment markedly increases strength, with yield strength rising to over 800 MPa, but at the cost of reduced plasticity.
Aged State: Aging treatment further strengthens the material, achieving yield strength of over 900 MPa, making it ideal for high-strength applications, though plasticity is further reduced.
Experimental Data and Validation
To validate the above theoretical analysis, a series of experiments were conducted, with specific data as follows:
Annealing Treatment Experiment: Temperature 750°C, holding time 1.5 hours, furnace cooling. Measured yield strength 450 MPa, tensile strength 650 MPa, elongation 26%.
Solution Treatment Experiment: Temperature 920°C, holding time 45 minutes, water cooling. Measured yield strength 820 MPa, tensile strength 960 MPa, elongation 14%.
Aging Treatment Experiment: Temperature 550°C, holding time 6 hours, furnace cooling. Measured yield strength 920 MPa, tensile strength 1020 MPa, elongation 12%.
The heat treatment processes of TA18 titanium alloy significantly impact its yield strength and overall mechanical properties. By rationally adjusting the parameters of annealing, solution, and aging treatments, an optimal balance between strength and plasticity can be achieved to meet the requirements of various engineering applications. Future research may focus on exploring more refined heat treatment processes to fully unlock the potential of TA18 titanium alloy.
Titanium products provided by GNEE
CNC machined parts
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Custom CNC Machining Parts of Most Materials |
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Quotation |
According to your drawing(size, material, thickness, processing content and required technology, etc.) |
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Tolerance丨Surface Roughness |
+/-0.005 - 0.01mm 丨 Ra0.2 - Ra3.2(Customize avaiable) |
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Materials Avaiable |
Titanium,Aluminum, Copper, Stainless Steel, Iron, PE, PVC, ABS, etc. |
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Surface Treatment |
Polishing, general/hard/color oxidation, surface chamfering, tempering, etc. |
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Processing |
CNC Turning, Milling parts, Drilling, Auto Lathe, Tapping, Bushing, Surface Treatment, etc. |
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Testing Equipment |
CMM / Tool microscope / multi-joint arm / Automatic height gauge / Manual height gauge / Dial gauge / Roughness measurement |
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Drawing Formats |
PRO/E, Auto CAD, Solid Works , UG, CAD / CAM / CAE, PDF |
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1.) 24 Hours Online Service & Quickly Quote / Delivery.2.) 100% QC quality inspection before delivery, and can provide quality |
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Titanium tube
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Material
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Pure titanium and Titanium alloy
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Titanium Grade
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Grade 1-Unalloyed titanium
Grade 2-Unalloyed titanium
Grade 3-Unalloyed titanium
Grade 7-Unalloyed titanium plus 0.12 to 0.25 %palladium
Grade 9-Titanium alloy (3 % aluminum, 2.5 % vanadium)
Grade 12-Titanium alloy (0.3 % molybdenum, 0.8 % nickel),
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Standard
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ASTM B338/ASME SB338, ASTM B337/ASME SB337, ASTM B861/ASME SB861, ASTM B862/ASME SB862,AMS4911,AMS4928
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Shape
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Round Square Rectangle
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Type
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Seamless/Welded
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Processing |
Seamless titanium tube: Titanium sponge-Compacting electrodes-melting-Forge-Bar billets-Extruding-Rolled-Straightening-Seamless tube
Welded titanium tube: Titanium sponge-Compacting electrodes-melting-Forge-Plate billets-Hot rolled-Cold rolled-Titanium scrap-Welded-Welded tube |
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Surface
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Polishing, picking, acid washed, black oxide
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Application
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1) Heat Exchanger, Condensers, Water Treatment, Desalination
2) Fluid, gas and oil transport
3) Pressure and heat transmission
4) Construction and ornament
5) Motorbycle and bike
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Material Milling Certificate
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According to. EN 10204.3.1
Including Chemical composition and Mechanical property |
Titanium rod
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Production Name |
Titanium Alloy Bar |
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Grade |
Gr1, Gr2, Gr3,Gr4,Gr5, Gr7, Gr6,Gr9, Gr11, Gr12 ,Gr16, Gr17,Gr25 |
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Size |
All sizes can be customized |
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Application |
Metallurgy, electronics, machinery, medical treatment, chemical industry, petroleum, medical treatment, aerospace |
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Feature |
High corrosion resistance, low density, good thermal stability |
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Technology |
Hot Forged, Hot Rolled, Cold Rolled, Annealing, Pickling |
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Surface |
Bright, Polished, Pickling, Acid cleaning, Sandblasting |
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Packing |
Export Standard Woodcase |
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Delivery time |
10-25days according to the quantity and process of the product |
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Quality and test |
Hardness test, Bending test, Hydrostatic etc. |
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Titanium sheet/plate/strip
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Material
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Pure titanium and Titanium alloy
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Titanium Grade
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GR1/GR2/GR3/Gr4/GR5/GR7/GR9/GR12/Gr5Eli/Gr23/Ti-15333 etc
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Standard
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ASTM B265/ASME SB265, ASTMF67, ASTM F136, ISO-5832-2(3),AMS 4911 etc
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Shape
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Titanium foil strip/Titanium sheets plate/Titanium coil
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Thickness
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0.02mm~100mm
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Width
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10-3000mm,customizable
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Length
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Customizable
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Surface
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Pickled/Sandblasting/Polishing
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Main Technique
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Hot Rolled /Cold Rolled
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Heat Treatment
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Usually are Annealled,but Solid Solution & Aging can be also OK
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Material Milling Certificate
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According to. EN 10204.3.1
Including Chemical composition and Mechanical property |
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Application
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Metallurgy, Electronics, Medical, Chemical, Petroleum, Pharmaceutical,aerospace, etc.
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Titanium wire
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Product |
Medical Grade Titanium Wire (ASTM F67 / ASTM F136) for Surgical & Dental Applications |
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Size |
Straight Wire: 0.1mm - 5.0mm, Tolerance: ±0.05mm, Max Length: 3000mm (118") |
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Material |
Medical Use: Gr1, Gr2, Gr5 (Ti-6Al-4V), Gr23 (Ti-6Al-4V ELI) |
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Standard |
ASTM F67, ASTM F136 (For Medical & Dental Applications) |
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Surface |
Polished, Pickled, Oxide-Free, Black (Oxidized) – Based on Application |
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Shape |
Straight Wire, Coiled Wire (On Spool), Cut-to-Length Available |
About Us
GNEE is a trusted exporter of high-purity titanium raw materials. We utilize advanced forging and precision CNC machining to ensure superior product quality. Every shipment is guaranteed through a rigorous pre-shipment inspection process, verifying chemical composition, mechanical properties, and dimensional accuracy to meet global standards.
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