Molybdenum News Center

Sintering Atmosphere Influence Titanium Zirconium Molybdenum Alloy’s Structure

At the same sintering temperature, the sintered temperature will impact on titanium zirconium molybdenum’s structure and impact fracture. When the sintering atmosphere was hydrogen, the organizational structure of TZM alloy is a small lump of Mo2Cand dispersion of TiC, TiC particles which is base on α solid solution of molybdenum. For impact fracture, when the sintering atmosphere was hydrogen, there are a lot of second-phase particles between molybdenum grains.   These particles are composed of elements Mo, Ti, Zr, and O and Ti has higher solubility in the molybdenum. Besides, part of Mo-Ti solid solution will absorb oxygen which is in the alloy and to form the second phase ions which played a pinning effect on oxygen and reducing impurities oxygen form at the gap leading to molybdenum brittle at room temperature.
When the sintering atmosphere is argon, the lump of Mo2C and dispersion particle of TiC, ZrC in organizational structure of TZM alloy are reduce. This is because under an argon atmosphere TZM alloy has high oxygen content, so Ti, Zr easy oxidize to oxide, difficult to form TiC and ZrC particles. What’s more, carbon solubility in molybdenum reduces and Mo2C massive reduce too. In contrast with the hydrogen sintering atmosphere, in an argon atmosphere it is difficult to form an oxide of the second phase particles, because in argon atmosphere TZM alloy has high oxygen content.

More molybdenum product: http://www.molybdenum.com.cn
Tel: 0592-5129696 Tax：0592-5129797
E-mail:  This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Prices, WML Version: http://m.chinatungsten.com

• < Prev
• Next >