Investment Casting Process of TiAl Alloy Thin-walled Circular Component

Wei Zhanlei; Huang Dong; Li Jianchong; Zhao Peng; Luo Qian; Li Yan; Nan Hai

doi:10.15980/j.tzzz.2018.07.015

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Investment Casting Process of TiAl Alloy Thin-walled Circular Component
Vol. 38, Issue 7, Pages: 748-750(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.07.015

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[1]魏战雷,黄东,李建崇,赵鹏,罗倩,李岩,南海.TiAl合金薄壁环形件精铸成形工艺研究[J].特种铸造及有色合金,2018,38(07):748-750.

Wei Zhanlei, Huang Dong, Li Jianchong, et al. Investment Casting Process of TiAl Alloy Thin-walled Circular Component. [J]. Special Casting & Nonferrous Alloys 38(7):748-750(2018)
[1]魏战雷,黄东,李建崇,赵鹏,罗倩,李岩,南海.TiAl合金薄壁环形件精铸成形工艺研究[J].特种铸造及有色合金,2018,38(07):748-750. DOI： 10.15980/j.tzzz.2018.07.015.

Wei Zhanlei, Huang Dong, Li Jianchong, et al. Investment Casting Process of TiAl Alloy Thin-walled Circular Component. [J]. Special Casting & Nonferrous Alloys 38(7):748-750(2018) DOI： 10.15980/j.tzzz.2018.07.015.

摘要

针对TiAl合金室温塑性低、制备过程容易开裂等问题

采用氧化物陶瓷型壳、真空自耗凝壳熔炼和离心浇注相结合的方式

研究了Ti-48Al-2Cr-2Nb合金的精密铸造成形技术。通过浇注系统设计和浇注工艺优化

采用离心浇注成功制备出TiAl合金环形铸件

直径达260mm

80%区域壁厚在1.5

.0mm

经无损检测发现铸件无裂纹、缩孔缺陷。

Abstract

Aiming at the problem of TiAl alloy’s low room temperature plasticity and cracking tendency

investment casting process of Ti-48 Al-2 Cr-2 Nb alloy was investigated by the combination methods of oxide ceramic shell

VAR an centrifugal casting.TiAl alloy thin-walled circular component has been manufactured successfully with a diameter of 260 mm and wall thickness of 1.5

.0 mm in the 80%area after the optimization of gating system and pouring process.Through the nondestructive testing of metallurgical quality

absence of crack and shrinkage cavity defects can be observed.