TZM molybdenum alloys bar details

TZM alloy belongs to the Mo-Ti-Zr-C series molybdenum-based alloy. It has high melting point, high strength, large elastic modulus, small linear expansion coefficient, low vapor pressure, good electrical and thermal conductivity, strong corrosion resistance and excellent high-temperature mechanical properties. Features. Commonly used at temperatures above 1100°C. Because TZM alloy has excellent creep properties, it is a material for high-temperature and high-strength molds for thermal processing (such as molds and punching heads for die-casting, extrusion, isothermal forging, etc.); it can also be used for high-temperature and high-pressure equipment (hot isostatic Presses and high-temperature heating furnaces) structural materials, such as heat shields, pillars, etc.; it is also an excellent material for high-power ceramic tube grids; in addition, it can also be used to produce powder metallurgy products, refractory materials and uranium dioxide The grain is used to burn the boat. Due to its better welding properties and higher recrystallization temperature, the alloy has been trialled for sealing of hot gas valves and high-temperature gas systems.

TZM molybdenum alloy refers to an aluminum alloy containing 0.4~0.6% (wt) of titanium, 0.08~0.12% (wt) of zirconium and 0.02~0.03% (wt) of carbon, also known as molybdenum-titanium-zirconium alloy. Both titanium and zirconium play a role in solid solution strengthening and carbide dispersion strengthening in the alloy, and the composite titanium-zirconium carbide is more stable at high temperatures than individual titanium carbide, so TZM molybdenum alloy has better high-temperature strength and higher recrystallization temperature.

TZM molybdenum alloy has better high temperature strength and higher recrystallization temperature. At the same time, TZM molybdenum alloy has better room temperature plasticity. TZM molybdenum alloy has relatively excellent comprehensive properties and is a widely used high-temperature molybdenum alloy.
The preparation method of TZM molybdenum alloy is the same as that of molybdenum-titanium alloy, that is, there are two methods: smelting into ingots and then processing and powder sintering into ingots and then processing. However, its processing is slightly more difficult than that of molybdenum-titanium alloys.
TZM molybdenum alloy is mainly used for high-temperature components in aerospace technology, such as rocket nozzle throat linings, flight rudder splints, etc. TZM alloy is also widely used as metal thermal processing molds with temperatures >1000°C, such as die casting, extrusion molds, etc.
TZM alloy has the characteristics of high melting point, high strength, high elastic modulus, small linear expansion coefficient, low vapor pressure, good electrical and thermal conductivity, strong corrosion resistance and good high-temperature mechanical properties, so it is widely used in many .

Comparison of physical properties between TZM alloy (molybdenum zirconium titanium alloy) and pure molybdenum

Material	Density/g·cm-3	Melting point/℃	Boiling point/℃
TZM alloy (Ti0.5/Zr0.1)	10.22	2617	4612
Mo	10.29	2610	5560

Mechanical properties of TZM alloy (molybdenum zirconium titanium alloy) (ri0.5/Zr0.1)

Mechanical properties	Elongation/%	Elastic modulus/GPa	Yield strength/MPa	Tensile strength/MPa	Fracture toughness/(MP·m1/2)
Numerical value	<20	320	560~1150	685	5.8~29.6

High temperature tensile strength and elongation of TZM alloy (molybdenum zirconium titanium alloy) (Ti0.5/Zr0.08)

Temperature/°C	performance
	Tensile strength/MPa	Elongation/%
RT	1140 ~1210	7.5~13.0
1000	700 ~720	5.2
1200	320 ~360	9
1300	190 ~210	11.5 ~13.5
1400	140 ~170	11.0 ~16.0

Thermal and electrical properties of TZM alloy (molybdenum zirconium titanium alloy) (Ti0.5/Zr0.1)

Performance	Thermal expansion coefficient/K-1 (20~100℃)	Thermal conductivity W/m·K	Maximum operating temperature in air ℃	Resistivity Ω·m
Numerical value	5.3X10-6	126	400	(5.3~5.5)X10-8

TZM alloy (molybdenum zirconium titanium alloy) also has good welding properties and can be welded well with H11 steel and other materials. At the same time, TZM alloy can resist corrosion from molten metals such as Zn. It can be cold worked by conventional methods. Carbide or high-speed steel tools can be used for machining in the presence of cooling lubricant.

Application areas
The many advantages of TZM alloy (molybdenum zirconium titanium alloy) make it widely used. Its good mechanical properties under high temperature and high pressure make it widely used in the military industry, such as valve bodies in torpedo engines, rocket nozzles, gas pipelines, and nozzle throat linings; and it is used in color picture tube glass bulb production lines The main shaft of the glass melting furnace is coated with platinum and rhodium to take advantage of its corrosion resistance to metal liquids;

TZM alloy (molybdenum zirconium titanium alloy) has a high melting point, so it can be used as a die-casting mold material for ferrous or non-ferrous metals and a perforated plug for seamless stainless steel, such as a mold for a copper rotor on an engine;

TZM alloys are also widely used in the electronic and electrical industry, such as electron tube cathodes, grids, high-voltage rectifier components, semiconductor thin film integrated circuits, etc. In addition, TZM alloys are also widely used in nuclear energy equipment, such as radiation shields and support frames. , heat exchangers, rails, etc.

In addition, it is also widely used as plates for high-temperature structural materials such as the walls of high-temperature furnaces and heat shields of hot isostatic presses; TZM alloy (molybdenum-zirconium-titanium alloy) is also widely used in the electronic and electrical industry, such as electron tubes Cathode, gate, high-voltage rectifier components, semiconductor thin film integrated circuits, etc.;

In addition, TZM alloy (molybdenum-zirconium-titanium alloy) is also widely used in nuclear energy equipment, such as radiation covers, supports, heat exchangers, rails, etc.