航空材料学报2018，Vol.38Issue(3)：40-45,6.DOI:10.11868/j.issn.1005-5053.2017.000207
热变形工艺对FGH96高温合金PPB析出相及组织的影响
Effect of Hot Deformation on PPB Precipitations and Microstructure in P/M Superalloy FGH96
刘昌奎 1魏振伟 2张佳庆 3郑真4
作者信息
- 1. 中国航发北京航空材料研究院,北京 100095
- 2. 航空工业失效分析中心,北京 100095
- 3. 航空材料检测与评价北京市重点实验室,北京 100095
- 4. 材料检测与评价航空科技重点实验室,北京 100095
- 折叠
摘要
Abstract
HIPed FGH96 superalloy prepared by AA powder was used as the research object, and the PPB precipitations and microstructures before and after different hot deformations were studied. The results show that PPB precipitates with circular distribution can be seen in HIPed FGH96 superalloy, and the coarse strip prime γ′ phase with circular chain distribution is one of the main characters of PPB. After hot deformation, the PPB in FGH96 superalloy is deformed and broken, the recrystallization grains are refined and twisted, and the grain misorientation becomes smaller. With the increase of deformation temperature and hot deformation, and the decrease of deformation rate, the deformation and fragmentation of PPB precipitates are more significant, the size of the primary residual γ′ phase becomes smaller, and the volume becomes less. The increase of deformation temperature and hot deformation, and the decrease of deformation rate are beneficial to reduce or even eliminate PPB precipitations.关键词
AA粉/FGH96/原始粉末颗粒边界/热变形/粗大γ′相Key words
AA powders/FGH96/prior particle boundary (PPB)/hot deformation/coarse γ′ phase分类
矿业与冶金引用本文复制引用
刘昌奎,魏振伟,张佳庆,郑真..热变形工艺对FGH96高温合金PPB析出相及组织的影响[J].航空材料学报,2018,38(3):40-45,6.
