Improving hot deformability of TiAl alloys by minor additions of Ni and Mg

• 作 者: 苏曦\\r\\r\\r\\r\\r\\r\\r\\r\\r\\n 张继\\r\\r\\r\\r\\r\\r\\r\\r\\r\\n 李世琼\\r\\r\\r\\r\\r\\r\\r\\r\\r\\n 仲增墉
• 出 处: Transactions of Nonferrous Metals Society of China
• 发表日期: 2002年04期
• 关键词: TiAl additions minor

In order to develop feasible hot processing technologies, hot workability of TiAl alloys need to be improved. The hot deformability of tested alloys, Ti 46.5Al 2.5V 1.0Cr and Ti 46.3Al 2.5V 1.0Cr (0.3～0.5)Ni (0.01)Mg (mole fraction, %), was evaluated by hot compression tests over the temperature range from 950 to 1?050?℃ and strain rate range from 0.01 to 1.0?s -1 . It was found that the hot deformability of TiAl alloys was obviously improved by minor additions of Ni and Mg.

The hot deformability of tested alloys, Ti 46.5Al 2.5V 1.0Cr and Ti 46.3Al 2.5V 1.0Cr (0.3-0.5) Ni (0.01) In order to develop feasible hot processing technologies, hot workability of TiAl alloys need to be improved. Mg (mole fraction,%), was evaluated by hot compression tests over the temperature range from 950 to 1 050 ° C and strain rate range from 0.01 to 1.0 s -1. It was found that the hot deformability of TiAl alloys was obviously improved by minor additions of Ni and Mg.