Titanium Zirconium Molybdenum Alloys Annealing Treatment
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- Category: Molybdenum knowledge
- Published on 28 July 2015
- Written by yiping
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When produce the titanium zirconium molybdenum (TZM) alloys, the last step generally required extrusion, forging or pressing, so to improve shaping and processing performance. But TZM alloy after extrusion, forging or pressing will produce residual stress. In order to eliminate residual stress and change the brittleness of the alloy, therefore need to do some annealing treatment. Because the Ti, Zr and C in TZM alloy will cause carbide precipitation and Ti, Zr solid solution so that TZM alloy recrystallization temperature will improve, and the annealing temperature of TZM alloy is generally above 1150 ℃. On the other hand, select the annealing temperature annealing is crucial. Because the annealing temperature can affect not only impact the hardness, but also tensile properties of the alloy can be greater.
Annealing is generally happen in a vacuum or protection of hydrogen, but after some recent studies have found that nitrogen use as a protected gas during annealing, that is making nitriding alloy to alloy during annealing. TZM alloy after nitriding, the base body to produce titanium nitride particle and it can improve the hardness and tensile strength of the alloy.
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