Analysis Of The Unique Properties And Characteristics Of Titanium Alloys

Since the discovery of the element titanium in 1790, mankind in order to obtain its extraordinary performance, and carried out a hundred years of arduous exploration. 1910 mankind for the first time produced the metal titanium, but the application of titanium alloy road is arduous and long, until 40 years later in 1951 to realize the industrialized production. China since the 1960s began the development and application of titanium alloy processing.
Titanium alloy has high specific strength, corrosion resistance, high temperature resistance, fatigue resistance and other characteristics. The weight of titanium alloy of the same size is only 60% of steel, but it is stronger than alloy steel. Due to its good characteristics, titanium alloy is often used in the medical field, such as artificial joints, bone fixation devices, denture and so on.
Titanium alloy is widely used in aircraft structural parts and heat-resistant parts, is one of the main structural materials of contemporary aircraft and engines, known as the "space metal".

But titanium alloy is like a potent horse, it must be tamed its potency, in order to achieve the goal of traveling thousands of miles a day, so how can we "tame" titanium alloy?
Titanium alloy has poor thermal conductivity, high hardness and easy rebound. Poor thermal conductivity is reflected in the titanium alloy custom processing process due to friction generated by the heat is very large, if it is other metals will be quickly transferred to the whole, such as we usually use the pot. But the poor thermal conductivity of titanium alloy, the heat will continue to gather, making the titanium alloy sticky, so that the tool becomes brittle with heat, serious wear and tear, and even damage to the tool, as if cutting gummy candy with a knife.
Titanium alloy hardness, also used in aircraft aluminum alloy material processing up appears to be a little easier: processing 1 meter of titanium alloy material time can process 25 meters of aluminum alloy material, but also more provincial knife, but the strength of aluminum alloy is difficult to meet the requirements, so the titanium alloy processing, although difficult, but very necessary. And titanium alloy rebound is serious, affecting the accuracy of parts processing, especially for thin-walled, complex shape of the parts, its processing is more difficult .
As titanium alloy machining technology is becoming more mature, processing equipment, cutting tools and other continuous improvement and enhancement, is now able to achieve stable processing of ultra-large structural components and precision complex parts, the machining accuracy can be stabilized at 0.2 mm, locally able to reach 0.1 mm, that is, the thickness of a piece of A4 paper, and even more fine, the processing efficiency is also significantly improved.
Strong milling, shallow cutting high-speed milling, etc. makes titanium alloy parts processing faster and more stable. Titanium alloy sheet metal processing of superplastic forming method, chemical milling treatment of compressed air stirring, welding of small current fast welding and other methods are our research to tame this horse.
Titanium alloy this horse can only be used by us for aviation equipment manufacturing, I believe that with the aviation industry, the majority of scientific and technological workers continue to research, exploration, our understanding of titanium alloy is gradually deepening, for the taming of titanium alloy this horse, we will have more means, it will make a greater contribution to China's aviation industry!