Ti6Al-4V properties, composition _ hours _ environment _ hydrogen fluoride
Original title: Properties and composition of Ti6Al-4V Ti6Al-4V Ti 6Al-4V is the most widely used composite titanium alloy. This brand may be a little strange to you, but when you talk about its other well-known name, TC4, you will suddenly understand. Today, Junmu will take you to learn about this brand. TC4 is used primarily in the annealed condition at 750 ° F. Plates up to 100 mm thickness are heat treated for strength. Hardenability is limited, and thicknesses greater than 25 mm may not exhibit all of its properties. Ti 6Al-4V is usually welded with the corresponding welding material or ELI filler wire. The production process is annealing at 1300-1450 ° F for two hours and air cooling. The annealed bar was recrystallized to increase ductility and fatigue strength, heated at 1750 ° F for 2 hours, and furnace annealed. For maximum fracture toughness and stress corrosion resistance, anneal 1950 ° F 1-2, water cooled. Then aging for 1150-1300 ° F2-4 hours, and air cooling. To achieve maximum strength, the steps for solution annealing and age hardening are: sheet, 1675-1725 ° F, 5-25 minutes, water quenching, aging 975 ° F for 4-6 hours, air cooling; bar and forgings, 1675-1725 ° F for 1 hour, water quenching, aging 975-1025 ° F for 3 hours, air cooling. To increase the breaking strength, ti6al4v eli , but decrease the tensile strength, the precipitation treatment (average) is 1150-1250 ° F for 4 hours, air cooled, and the annealing release pressure is typically at 1000-1200 ° F for 1-4 hours, air cooled. TC4 Ti 6Al-4V can resist general corrosion, but it will lead to the cracking of the oxide protective layer due to the rapid corrosion of the environment. These environments include hydrogen fluoride (HF), hydrochloric acid (HCl), sulfur, and phosphoric acid. Corrosion inhibitors may extend the time of corrosion resistance but are not resistant to hydrogen fluoride (HF). Ti 6Al-4V is resistant to pure hydrocarbons and most chlorinated and fluorinated hydrocarbons (assuming that small amounts of hydrochloric acid and hydrogen fluoride are formed without the addition of water). Although Ti 6Al-4V is a good titanium alloy, it is still susceptible to chloride stress corrosion. Silver-plated titanium alloy bolts should not be used in seawater because the connection of silver is easily affected by chloride ions in the environment. Ti 6Al-4V is also affected by methanol, red fuming nitric acid, and nitrogen and oxygen compounds. Under the influence of red fuming nitric acid, problems occur in environments containing less than 1.5% water or more than 6% nitrogen dioxide. Under the influence of compounds of nitrogen and oxygen, problems arise in the impurities of oxides and chlorides.
Ti 6Al-4V composition Expand the full text Executive standard of Ti 6Al-4V: AMS 4911, AMS 4920, AMS 4928, AMS 4934, AMS 4935, AMS 4965, AMS 4967, AMS 6931 ASME SB-265 ASTM B 265 MIL-T-9047 UNS R56400 Werkstoff 3.7164 Product form: 6Al-4V Round Bar, 6Al-4V Sheet, 6Al-4V Welded Products, 6Al-4V-Rectangular Bar,titanium bar grade 5, 6AI-4V Sheet, 6AI-4V Forging Stock Ti 6Al-4V Material properties High strength below 600 ° F Excellent resistance to common corrosion High strength-to-weight ratio Main application Turbine blades, discs and rings Aircraft structural components Fastener Medical and Dental Implants Hand tools Sports equipment Chemical equipment Physical properties: Density: 0.160 lb/inch3 Melting point: 2929-3020 ° F Beta transition: 1825 ± 25 ° F Mechanical properties of Ti 6Al-4V Thin and medium plate Return to Sohu to see more Responsible Editor:. yunchtitanium.com