In recent years, new developments in titanium alloys have mainly focused on the following five aspects.
(1) Medical titanium alloy
Titanium alloys have low density and good biocompatibility. They are ideal medical materials and can even be implanted into the human body. Titanium alloys previously used in the medical field contain vanadium and aluminum, which can cause harm to the human body. However, recently, Japanese scholars have developed a new type of titanium alloy with good biocompatibility. However, this alloy has not yet been mass-produced. I believe that in the near future, such high-quality alloys can be widely used in daily life.
(2) Flame retardant titanium alloy
The titanium-based alloy that can resist combustion under certain pressure, temperature and air flow rate is flame-resistant titanium alloy. The United States, Russia and China have all successively developed new flame-resistant titanium alloys. The United States uses these flame-resistant titanium alloys in engines. Because these titanium alloys are not sensitive to combustion, they can greatly improve the stability of the engine.
(3) High strength and high toughness β type
β-type titanium alloy has the characteristics of high strength, good weldability, and excellent hot and cold processing properties. The researchers used this rule to prepare the β-type titanium alloy with very obvious characteristics: good thermal processing performance, good plasticity, and good welding performance. And its mechanical properties are greatly improved after solid solution-aging treatment. At present, Japan and Russia have prepared such titanium alloys.
(4)Titanium aluminum compound
Compared with ordinary titanium alloys, titanium-aluminum compounds have better high-temperature properties, better oxidation and creep resistance, and are less dense than ordinary titanium alloys. These excellent characteristics are destined to set off a new alloy craze for titanium-aluminum compounds. This new titanium-aluminum compound alloy has been synthesized in the United States and is in mass production.
(5) High temperature titanium alloy
The titanium alloy prepared by combining rapid solidification method and powder metallurgy method and using fiber or particle reinforced composite materials has excellent high temperature mechanical characteristics. The service temperature limit of high-temperature titanium alloys is much higher than that of ordinary titanium alloys. At present, the United States has prepared new high-temperature titanium alloys.
(6) Titanium-nickel alloy
An alloy composed of titanium and nickel is called a "memory alloy". This alloy is made into a predetermined shape. After shaping, if it is deformed by external force, it can be restored to its original appearance with a little heating. This alloy can be used in various fields such as instrumentation and electronic devices.
