航空材料学报2026，Vol.46Issue(3)：18-27,10.DOI:10.11868/j.issn.1005-5053.2025.000024
ZTC4钛合金热等静压内部缺陷弥合区组织演变
Microstructure evolution of internal defect healing zone in ZTC4 titanium alloy during hot isostatic pressing
摘要
Abstract
The internal displacement change around shrinkage pores,stress and strain distribution,and microstructural evolution in the defect healing zone of ZTC4 titanium alloy during hot isostatic pressing(HIP)are investigated by numerical simulation combined with experimental methods.The results demonstrate that under the high-temperature and high-pressure conditions of HIP,high stress-strain zones form around the shrinkage pores.The stress magnitude shows an inverse relationship with the distance from pore surfaces,exhibiting higher stress levels in proximity to the pore boundaries.As the shrinkage pore size decreases,the strain concentration intensifies.After HIP,a radial pore-healing zone microstructure develops at the original shrinkage pore sites.Within this healed region,heterogeneous plastic deformation occurs among distinct α/β colonies.Colonies with more readily activated dislocation slip systems experience greater deformation magnitudes,ultimately leading to the formation of equiaxed grain structures.关键词
钛合金/热等静压/有限元方法/弥合区/等轴晶Key words
titanium alloy/hot isostatic pressing/finite element method/healing zone/equiaxed grain分类
航空航天引用本文复制引用
高威,徐倩,殷亚军,冯新..ZTC4钛合金热等静压内部缺陷弥合区组织演变[J].航空材料学报,2026,46(3):18-27,10.基金项目
稳定支持项目(2019-363) （2019-363）
