Finite element simulation of superplastic isothermal forging process for nickel-base PM superalloy

Q. H. Li, F. G. Li, Q. Wan, M. Q. Li

科研成果: 书/报告/会议事项章节会议稿件同行评审

5 引用 (Scopus)

摘要

The Chinese nickel-base powder metallurgy (PM) superalloy FGH96, which was processed through hot isostatic pressing, is very difficult to deform. FGH96 superalloy has better superplasticity in special deformation conditions and superplastic isothermal forging is the best formation method at present. The accurate constitutive equations of the FGH96 alloy was established depended on the isothermal compression experiments. A two dimensional and thermomechanical coupled axisymmetric finite element(FE) model in which both part and die were taken in consideration was established to fully simulate the FGH96 superalloy turbine disk superplastic isothermal forging process. Some physical parameters about the turbine disk forging process, such as load, stress field and strain field were calculated at different temperature within the forging range of FGH96. The regularity of peak equivalent stress acted on die cavity surface, yield limit and ultimate strength of die material during the forging process was found. Based on the regulation, peak equivalent stress acted on cavity surface must be extremely less than yield limit of die material, the optimized processing parameter 1050°C that is the best deformation temperature for the alloy was determined. That was proved better in practice and high quality disk was forged.

源语言英语
主期刊名Superplasticity in Advanced Materials - ICSAM 2006 - Proceedings of the 9th International Conference on Superplasticity in Advanced Materials
出版商Trans Tech Publications Ltd
297-302
页数6
ISBN(印刷版)0878494359, 9780878494354
DOI
出版状态已出版 - 2007
活动9th International Conference on Superplasticity in Advanced Materials, ICSAM 2006 - Chengdu, 中国
期限: 23 6月 200626 6月 2006

出版系列

姓名Materials Science Forum
551-552
ISSN(印刷版)0255-5476
ISSN(电子版)1662-9752

会议

会议9th International Conference on Superplasticity in Advanced Materials, ICSAM 2006
国家/地区中国
Chengdu
时期23/06/0626/06/06

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