TZM alloy is a high-performance high-temperature alloy with molybdenum (Mo) as the matrix, titanium (Ti), zirconium (Zr) and trace carbon (C). Its name comes from the main element symbol (Ti-Zr-Mo). The following are its key characteristics:
Composition
Usually contains 0.4~0.55% Ti, 0.06~0.12% Zr, 0.01~0.04% C, and the balance is molybdenum.
Core advantages
High temperature performance: still maintain high strength at 1000~1500℃, and creep resistance is better than pure molybdenum.
High recrystallization temperature: about 400℃ higher than pure molybdenum, up to 1400℃ or more.
Oxidation resistance: Although it still needs coating protection, it is improved compared with pure molybdenum.
Typical applications
Aerospace: rocket nozzles, high-temperature structural parts
Industrial: high-temperature furnace components, hot isostatic pressing molds
Electronics industry: high-power semiconductor substrates
Limitations
Room temperature brittleness is high and processing is difficult;
Oxidation protection is still required under extreme high temperatures.
The alloy achieves performance improvement through solid solution strengthening of Ti/Zr and dispersion strengthening of carbides, and is one of the key materials in high-temperature environments.
