Deformation Temperature Influence Titanium Zirconium Molybdenum Alloy’S Organization Structure
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- Category: Molybdenum knowledge
- Published on 27 August 2015
- Written by yiping
- Hits: 305
Deformation temperature is one of the important factors affecting the titanium zirconium molybdenum (TZM) alloy organizatiom structure, and changes in the organizational structure of the alloy can also cause changes in their properties. After study the influence of different deformation temperature on TZM alloy found that when the deformation temperature is lower than 1150 ℃, due to the deformation resistance of titanium zirconium molybdenum alloy is large so the cracking becomes serious which can not employ subsequent processing. As the deformation temperature increase, TZM alloy has no cracking phenomenon. Besides, the deformation resistance of TZM alloy decreased and the plasticity increase. When the deformation temperature at range of 1300~1350 ℃, the organizational structure of the alloy is a fibrous elongated grains which are mutually overlapping staggered. Besides, the arrangement between the grains very compact and grain boundaries is straight which has fewer voids. However, if the deformation temperature above 1350 ℃, the grain size of the alloy TZM can cause excessive tissue coarsening. During rolling the alloy will pass through a large thermal deformation, so that the ductility of the alloy to give the corresponding increase, but there is a big internal tissue distortion after deformation. If subsequent processing steps still using higher heating temperature, it is easy to make a crude alloy, reduce performance TZM alloy.
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