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CN101823137A 采用真空熔铸法制备TiAl合金的方法 无效 - 撤回

采用真空熔铸法制备TiAl合金的方法
摘要：
本发明涉及一种采用真空熔铸法制备TiAl合金的方法，包括以下步骤：a.先将石墨模放入炉内，在700～900℃烘3～5min后，再放入真空熔炼炉内；b.装料：将金属Al与金属Ti一起加入到真空熔炼炉中；c.抽真空：将真空熔炼炉内的真空要抽到2.0Pa以下；d.熔铸：升温速率为12-18℃/min，熔化温度为1400～1800℃；e.浇铸：金属Al与金属Ti化净后，浇铸到烘好的石墨模中，制得TiAl合金材料。本发明工艺简单、成本低，制得的TiAl合金材料致密性高、成品率高。
摘要（英）：

The invention relates to a method for preparing a TiAl alloy by adopting a vacuum fusion casting method, comprising the following steps of: a, putting a graphite mold into an oven, drying the graphite mold at the temperature of 700-900 DEG C for 3-5 minutes, and putting the graphite mold into a vacuum fusion oven; b, feeding: adding metal Al and metal Ti into the vacuum fusion oven; c, evacuating: evacuating in the vacuum fusion oven below 2.0Pa; d,fusion casting: setting the heating rate to be12-18 DEG C/min and the fusion temperature to be 1400-1800 DEG C; and e, casting: after fusing the metal Al and the metal Ti, casting the metal Al and the metal Ti into the dried graphite mold to prepare the TiAl alloy material. The method for preparing a TiAl alloy by adopting a vacuum fusion casting method has simple process and low cost, and the prepared TiAl alloy material has high compactness and yield.

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